/* ==========================================
   Wacheck Landing Page - Modern Design
   Adaptado de React/Tailwind a CSS Puro
   ========================================== */

/* ==========================================
   Variables CSS (inspiradas en el diseño)
   ========================================== */
:root {
    /* UCol-inspired institutional colors */
    --color-background: hsl(0, 0%, 100%);
    --color-foreground: hsl(150, 30%, 12%);
    
    --color-primary: hsl(145, 45%, 22%);
    --color-primary-foreground: hsl(0, 0%, 100%);
    
    --color-secondary: hsl(140, 20%, 94%);
    --color-secondary-foreground: hsl(145, 45%, 22%);
    
    --color-muted: hsl(140, 15%, 95%);
    --color-muted-foreground: hsl(150, 10%, 45%);
    
    --color-accent: hsl(200, 85%, 50%);
    --color-accent-foreground: hsl(0, 0%, 100%);
    
    --color-border: hsl(140, 15%, 88%);
    
    /* Game-specific colors */
    --color-ucol-green: hsl(145, 45%, 22%);
    --color-ucol-green-light: hsl(145, 35%, 35%);
    --color-water-blue: hsl(200, 85%, 50%);
    --color-water-blue-deep: hsl(210, 90%, 35%);
    --color-water-blue-light: hsl(195, 80%, 70%);
    --color-gold: hsl(42, 90%, 55%);
    
    /* Shadows */
    --shadow-card: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-card-hover: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-hero-btn: 0 10px 30px rgba(32, 178, 170, 0.4);
    
    /* Typography */
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Open Sans', sans-serif;
}

/* ==========================================
   Reset & Base Styles
   ========================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: var(--color-foreground);
    background-color: var(--color-background);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* ==========================================
   Navbar
   ========================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: var(--color-primary);
    transition: all 0.3s ease;
    animation: slideDown 0.5s ease-out;
}

.navbar.scrolled {
    background-color: rgba(34, 92, 68, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
    }
    to {
        transform: translateY(0);
    }
}

.nav-utility {
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-utility-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.375rem 1rem;
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.7);
}

.nav-utility-links {
    display: flex;
    gap: 1rem;
}

.nav-utility-links a {
    transition: color 0.2s;
}

.nav-utility-links a:hover {
    color: rgba(255, 255, 255, 1);
}

.nav-utility-badge {
    display: none;
}

@media (min-width: 640px) {
    .nav-utility-badge {
        display: block;
    }
}

.nav-main {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 4rem;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--color-primary-foreground);
}

.nav-logo-icon {
    font-size: 1.5rem;
}

.nav-logo-title {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.125rem;
    line-height: 1;
    display: block;
}

.nav-logo-subtitle {
    font-size: 0.625rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: rgba(255, 255, 255, 0.6);
}

.nav-links {
    display: none;
    align-items: center;
    gap: 0.25rem;
}

@media (min-width: 768px) {
    .nav-links {
        display: flex;
    }
}

.nav-link {
    padding: 0.5rem 0.75rem;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.8);
    transition: all 0.2s;
}

.nav-link:hover {
    color: rgba(255, 255, 255, 1);
    background-color: rgba(255, 255, 255, 0.1);
}

.volume-btn {
    margin-left: 0.75rem;
    padding: 0.5rem 0.75rem;
    border-radius: 0.5rem;
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--color-primary-foreground);
    font-size: 1.25rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.volume-btn:hover {
    background-color: rgba(255, 255, 255, 0.2);
    transform: scale(1.05);
}

.nav-cta {
    margin-left: 0.75rem;
    padding: 0.5rem 1.25rem;
    border-radius: 0.5rem;
    background-color: var(--color-accent);
    color: var(--color-accent-foreground);
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.875rem;
    transition: all 0.2s;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    max-width: 240px;
}

.nav-cta:hover {
    filter: brightness(1.1);
}

.nav-hamburger {
    display: block;
    background: none;
    border: none;
    color: var(--color-primary-foreground);
    padding: 0.5rem;
    cursor: pointer;
}

@media (min-width: 768px) {
    .nav-hamburger {
        display: none;
    }
}

.nav-mobile {
    display: none;
    background-color: var(--color-primary);
    padding: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-mobile.active {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    animation: slideDown 0.3s ease-out;
}

.nav-mobile-link {
    padding: 0.75rem;
    color: rgba(255, 255, 255, 0.9);
    border-radius: 0.375rem;
    transition: background-color 0.2s;
}

.nav-mobile-link:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.nav-mobile-cta {
    padding: 0.75rem;
    background-color: var(--color-accent);
    color: var(--color-accent-foreground);
    text-align: center;
    border-radius: 0.5rem;
    font-weight: 600;
    margin-top: 0.5rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.nav-user-avatar {
    width: 1.6rem;
    height: 1.6rem;
    border-radius: 9999px;
    object-fit: cover;
    flex-shrink: 0;
    border: 1px solid rgba(255, 255, 255, 0.35);
}

.nav-user-icon {
    width: 1.2rem;
    height: 1.2rem;
    flex-shrink: 0;
    opacity: 0.95;
}

.nav-user-name {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    min-width: 0;
}

.nav-mobile-cta .nav-user-avatar {
    width: 1.4rem;
    height: 1.4rem;
    border-color: rgba(15, 23, 42, 0.2);
}

/* ==========================================
   Hero Section
   ========================================== */
.hero,
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding-top: 5rem;
    background:
        radial-gradient(circle at 20% 20%, rgba(80, 200, 255, 0.18), transparent 30%),
        linear-gradient(180deg, rgba(5, 35, 58, 0.18) 0%, rgba(4, 39, 64, 0.4) 100%),
        url('../img/hero-banner.jpg') center / cover no-repeat;
}

.hero-background,
.hero-ocean {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, #1e5a46 0%, #2c7a63 50%, #3a9980 100%);
}

.hero-ocean {
    background: linear-gradient(180deg, rgba(130, 198, 235, 0.5) 0%, rgba(12, 91, 145, 0.35) 50%, rgba(5, 43, 79, 0.15) 100%);
}

.ocean-layer {
    position: absolute;
    inset: auto 0 0;
    height: 46%;
    opacity: 0.95;
    background-repeat: repeat-x;
    background-size: 1600px 100%;
    animation: oceanDrift 22s linear infinite;
}

.ocean-back {
    height: 42%;
    background: linear-gradient(180deg, rgba(16, 126, 190, 0.14) 0%, rgba(8, 70, 120, 0.45) 60%, rgba(4, 42, 79, 0.85) 100%);
}

.ocean-mid {
    height: 34%;
    background: linear-gradient(180deg, rgba(43, 167, 227, 0.1) 0%, rgba(5, 96, 163, 0.35) 40%, rgba(3, 52, 97, 0.88) 100%);
    clip-path: polygon(0 28%, 10% 20%, 20% 30%, 30% 22%, 40% 30%, 50% 18%, 60% 28%, 70% 20%, 80% 30%, 90% 21%, 100% 28%, 100% 100%, 0 100%);
}

.ocean-front {
    height: 26%;
    background: linear-gradient(180deg, rgba(43, 179, 243, 0.22) 0%, rgba(7, 82, 141, 0.85) 58%, rgba(3, 39, 74, 0.98) 100%);
    clip-path: polygon(0 34%, 8% 24%, 16% 38%, 24% 26%, 32% 38%, 40% 22%, 48% 36%, 56% 23%, 64% 39%, 72% 28%, 80% 39%, 88% 27%, 96% 38%, 100% 34%, 100% 100%, 0 100%);
    animation-duration: 14s;
}

@keyframes oceanDrift {
    from {
        transform: translateX(0);
    }
    to {
        transform: translateX(-120px);
    }
}

.hero-background-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.hero-background-overlay,
.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, rgba(30, 90, 70, 0.7), rgba(30, 90, 70, 0.85));
}

.hero-overlay {
    background:
        linear-gradient(180deg, rgba(5, 34, 48, 0.1) 0%, rgba(4, 37, 66, 0.55) 65%, rgba(3, 23, 47, 0.82) 100%),
        radial-gradient(circle at center, rgba(255, 255, 255, 0.16) 0%, rgba(255, 255, 255, 0) 45%);
}

.hero-water-elements {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}

.water-drop {
    position: absolute;
    font-size: 2.5rem;
    opacity: 0.2;
    animation: floatUp 10s linear infinite;
}

.water-drop:nth-child(1) { left: 15%; }
.water-drop:nth-child(2) { left: 30%; }
.water-drop:nth-child(3) { left: 45%; }
.water-drop:nth-child(4) { left: 60%; }
.water-drop:nth-child(5) { left: 75%; }
.water-drop:nth-child(6) { left: 90%; }

@keyframes floatUp {
    from {
        transform: translateY(100vh);
    }
    to {
        transform: translateY(-10vh);
    }
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
}

.hero .hero-content {
    width: 100%;
    max-width: 980px;
    padding-top: 3rem;
    padding-bottom: 4rem;
}

.hero-content > * {
    animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) both;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-logo {
    margin-bottom: 1.5rem;
    animation: scaleInBounce 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55) 0.2s both;
}

@keyframes scaleInBounce {
    0% {
        transform: scale(0) rotate(-180deg);
        opacity: 0;
    }
    50% {
        transform: scale(1.1) rotate(10deg);
    }
    100% {
        transform: scale(1) rotate(0deg);
        opacity: 1;
    }
}

.hero-badge,
.hero-game-badge {
    animation-delay: 0.3s;
}

.hero-title {
    animation-delay: 0.4s;
}

.hero-subtitle {
    animation-delay: 0.5s;
}

.hero-description {
    animation-delay: 0.6s;
}

.hero-buttons {
    animation-delay: 0.7s;
}

.hero-logo-text {
    font-size: 5rem;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.3));
    animation: float 3s ease-in-out infinite;
}

.hero-institutional {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    color: rgba(255, 255, 255, 0.92);
    margin-bottom: 1rem;
}

.hero-ucol-logo {
    height: 3rem;
    width: auto;
    filter: drop-shadow(0 8px 18px rgba(0, 0, 0, 0.28));
}

.hero-institutional-text {
    font-size: 0.95rem;
    letter-spacing: 0.02em;
}

.hero-badge,
.hero-game-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: 9999px;
    background-color: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
}

.hero-game-badge {
    margin-bottom: 1.5rem;
    color: #54d2ff;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.hero-title {
    font-family: var(--font-heading);
    font-weight: 900;
    font-size: clamp(3rem, 10vw, 5rem);
    color: var(--color-primary-foreground);
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
    text-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.hero-title-main,
.hero-title-sub {
    display: block;
}

.hero-title-main {
    font-size: clamp(4.5rem, 12vw, 7rem);
    line-height: 0.95;
    color: #6fd1ff;
    text-shadow: 0 0 24px rgba(57, 196, 255, 0.22), 0 4px 20px rgba(0, 0, 0, 0.42);
}

.hero-title-sub {
    margin-top: 0.2rem;
    font-size: clamp(1.25rem, 3.2vw, 2.3rem);
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: rgba(226, 247, 255, 0.82);
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.38);
}

.hero-subtitle {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: clamp(1.25rem, 4vw, 1.875rem);
    color: var(--color-water-blue-light);
    margin-bottom: 1.5rem;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.hero-description {
    max-width: 42rem;
    margin: 0 auto 2.5rem;
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.7;
}

.hero-buttons,
.hero-actions {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

@media (min-width: 640px) {
    .hero-buttons,
    .hero-actions {
        flex-direction: row;
    }
}

.hero-btn-primary,
.btn-hero-primary {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    border-radius: 0.75rem;
    background: linear-gradient(135deg, var(--color-water-blue) 0%, var(--color-water-blue-deep) 100%);
    color: var(--color-accent-foreground);
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.125rem;
    box-shadow: var(--shadow-hero-btn);
    transition: all 0.2s;
    cursor: pointer;
    border: none;
}

.hero-btn-primary span,
.btn-hero-primary span {
    font-size: 1.5rem;
}

.hero-btn-primary:hover,
.btn-hero-primary:hover {
    filter: brightness(1.1);
    transform: scale(1.05) translateY(-2px);
    box-shadow: 0 15px 40px rgba(32, 178, 170, 0.5);
}

.hero-btn-primary:active,
.btn-hero-primary:active {
    transform: scale(0.95) translateY(0);
    box-shadow: 0 5px 15px rgba(32, 178, 170, 0.3);
}

.hero-btn-secondary,
.btn-hero-secondary {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    border-radius: 0.75rem;
    background-color: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: var(--color-primary-foreground);
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.125rem;
    transition: all 0.2s;
    cursor: pointer;
}

.hero-btn-secondary span,
.btn-hero-secondary span {
    font-size: 1.5rem;
}

.hero-btn-secondary:hover,
.btn-hero-secondary:hover {
    background-color: rgba(255, 255, 255, 0.2);
    transform: scale(1.05) translateY(-2px);
    box-shadow: 0 10px 25px rgba(255, 255, 255, 0.1);
}

.hero-btn-secondary:active,
.btn-hero-secondary:active {
    transform: scale(0.95) translateY(0);
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.2rem;
    margin-top: 1rem;
    color: #7dd8ff;
}

.hero-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 90px;
}

.hero-stat-num {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 6vw, 3.5rem);
    line-height: 1;
    font-weight: 800;
    color: #53d3ff;
    text-shadow: 0 0 20px rgba(83, 211, 255, 0.25);
}

.hero-stat-label {
    margin-top: 0.35rem;
    color: rgba(220, 245, 255, 0.75);
    font-size: 0.95rem;
}

.hero-stat-divider {
    width: 1px;
    height: 48px;
    background: rgba(255, 255, 255, 0.22);
}

.hero-scroll {
    position: absolute;
    left: 50%;
    bottom: 1.2rem;
    transform: translateX(-50%);
    color: rgba(255, 255, 255, 0.72);
    animation: heroScrollBounce 1.8s infinite;
}

@keyframes heroScrollBounce {
    0%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    50% {
        transform: translateX(-50%) translateY(8px);
    }
}

@media (max-width: 767px) {
    .hero,
    .hero-section {
        padding-top: 7.5rem;
    }

    .hero-institutional {
        flex-direction: column;
        gap: 0.4rem;
    }

    .hero-description {
        font-size: 1rem;
        padding: 0 0.5rem;
    }

    .hero-stats {
        gap: 0.8rem;
    }

    .hero-stat {
        min-width: 72px;
    }

    .hero-stat-divider {
        height: 36px;
    }
}

/* ==========================================
   About Section
   ========================================== */
.about-section {
    padding: 6rem 0;
    background-color: var(--color-background);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 4rem;
    align-items: center;
}

@media (min-width: 768px) {
    .about-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.section-badge {
    display: inline-block;
    padding: 0.375rem 1rem;
    border-radius: 9999px;
    background-color: rgba(34, 92, 68, 0.1);
    color: var(--color-primary);
    font-weight: 600;
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

.section-badge.accent {
    background-color: rgba(32, 178, 170, 0.1);
    color: var(--color-accent);
}

.section-title {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: clamp(1.875rem, 5vw, 2.5rem);
    color: var(--color-foreground);
    margin-bottom: 1.5rem;
    line-height: 1.3;
}

.section-title.white {
    color: white;
}

.section-text {
    color: var(--color-muted-foreground);
    font-size: 1.125rem;
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.section-text.white {
    color: rgba(255, 255, 255, 0.9);
}

.section-text strong {
    color: var(--color-foreground);
}

.section-text.white strong {
    color: white;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.stat-card {
    text-align: center;
    padding: 1rem;
    border-radius: 0.75rem;
    background-color: var(--color-secondary);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: default;
}

.stat-card:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 10px 20px rgba(32, 178, 170, 0.2);
    background-color: rgba(32, 178, 170, 0.1);
}

.stat-card:hover .stat-value {
    transform: scale(1.1);
    color: var(--color-water-blue-deep);
}

.stat-value {
    font-family: var(--font-heading);
    font-weight: 900;
    font-size: 1.5rem;
    color: var(--color-accent);
    transition: all 0.3s ease;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-muted-foreground);
    margin-top: 0.25rem;
}

.about-card {
    position: relative;
}

.about-card-inner {
    border-radius: 1.5rem;
    background: linear-gradient(135deg, var(--color-ucol-green) 0%, var(--color-ucol-green-light) 100%);
    padding: 2.5rem;
    color: var(--color-primary-foreground);
    position: relative;
    overflow: hidden;
}

.about-card-pattern {
    position: absolute;
    inset: 0;
    opacity: 0.1;
}

.about-card-pattern span {
    position: absolute;
    font-size: 2.5rem;
    animation: float 4s ease-in-out infinite;
}

.about-card-pattern span:nth-child(1) { animation-delay: 0s; }
.about-card-pattern span:nth-child(2) { animation-delay: 0.5s; }
.about-card-pattern span:nth-child(3) { animation-delay: 1s; }
.about-card-pattern span:nth-child(4) { animation-delay: 1.5s; }
.about-card-pattern span:nth-child(5) { animation-delay: 2s; }

.about-card-content {
    position: relative;
    z-index: 10;
}

.about-card-icon {
    font-size: 4rem;
    margin-bottom: 1.5rem;
}

.about-card-title {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.about-card-list {
    list-style: none;
}

.about-card-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    color: rgba(255, 255, 255, 0.9);
}

.list-number {
    flex-shrink: 0;
    width: 1.75rem;
    height: 1.75rem;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    font-weight: 700;
}

/* ==========================================
   Features Section
   ========================================== */
.features-section {
    padding: 6rem 0;
    background: linear-gradient(to bottom, var(--color-secondary) 0%, var(--color-background) 100%);
}

.features-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-description {
    max-width: 42rem;
    margin: 0 auto;
    color: var(--color-muted-foreground);
    font-size: 1.125rem;
}

.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.feature-card {
    padding: 1.5rem;
    border-radius: 1rem;
    background-color: white;
    box-shadow: var(--shadow-card);
    border: 1px solid rgba(0, 0, 0, 0.05);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0;
    transform: translateY(30px);
}

.feature-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.feature-card:nth-child(1) { transition-delay: 0.1s; }
.feature-card:nth-child(2) { transition-delay: 0.2s; }
.feature-card:nth-child(3) { transition-delay: 0.3s; }
.feature-card:nth-child(4) { transition-delay: 0.4s; }
.feature-card:nth-child(5) { transition-delay: 0.5s; }
.feature-card:nth-child(6) { transition-delay: 0.6s; }

.feature-card:hover {
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-8px) scale(1.02);
}

.feature-icon {
    width: 3.5rem;
    height: 3.5rem;
    border-radius: 0.75rem;
    background: linear-gradient(135deg, var(--color-water-blue) 0%, var(--color-water-blue-deep) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1rem;
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.feature-card:hover .feature-icon {
    transform: scale(1.15) rotate(5deg);
    box-shadow: 0 8px 20px rgba(32, 178, 170, 0.4);
}

.feature-title {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--color-foreground);
    margin-bottom: 0.5rem;
}

.feature-description {
    color: var(--color-muted-foreground);
    line-height: 1.6;
}

/* ==========================================
   Bachillerato Section
   ========================================== */
.bachillerato-section {
    padding: 6rem 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-ucol-green-light) 100%);
    color: white;
    text-align: center;
}

.bachillerato-content {
    max-width: 50rem;
    margin: 0 auto;
}

.bachillerato-icon {
    font-size: 4rem;
    margin-bottom: 1.5rem;
}

/* ==========================================
   Calculator Section
   ========================================== */
.calculator-section {
    padding: 6rem 0;
    background-color: var(--color-background);
}

.calculator-header {
    text-align: center;
    margin-bottom: 3rem;
}

.calculator-card-full {
    max-width: 72rem;
    margin: 0 auto;
    background-color: white;
    border-radius: 1.5rem;
    box-shadow: var(--shadow-card-hover);
    padding: 0;
    overflow: hidden;
}

.calculator-activities {
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.activity-card {
    padding: 1.25rem;
    border-radius: 0.75rem;
    background-color: var(--color-secondary);
    transition: background-color 0.2s;
}

.activity-card:hover {
    background-color: hsl(140, 25%, 90%);
}

.activity-main {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.activity-icon {
    font-size: 2rem;
    width: 48px;
    height: 48px;
    text-align: center;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 0.75rem;
    background: linear-gradient(135deg, var(--color-water-blue), var(--color-water-blue-deep));
    color: white;
}

.activity-icon svg,
.activity-icon i {
    width: 24px;
    height: 24px;
}

.activity-info {
    flex: 1;
}

.activity-name {
    font-family: var(--font-heading);
    font-weight: 600;
    color: var(--color-foreground);
    margin-bottom: 0.25rem;
}

.activity-question {
    font-size: 0.875rem;
    color: var(--color-water-blue);
    font-weight: 500;
}

.activity-controls {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.activity-btn {
    width: 32px;
    height: 32px;
    border-radius: 0.5rem;
    background-color: rgba(34, 92, 68, 0.1);
    color: var(--color-primary);
    border: none;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.activity-btn:hover {
    background-color: rgba(34, 92, 68, 0.2);
    transform: scale(1.1);
}

.activity-value {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--color-foreground);
    width: 40px;
    text-align: center;
}

.activity-unit {
    font-size: 0.75rem;
    color: var(--color-muted-foreground);
    width: 100px;
}

.activity-result {
    width: 80px;
    text-align: right;
}

.activity-result-value {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--color-accent);
    font-size: 1.125rem;
}

.activity-result-label {
    font-size: 0.625rem;
    color: var(--color-muted-foreground);
}

.activity-toggle {
    margin-top: 0.75rem;
    margin-left: 64px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.toggle-switch {
    position: relative;
    width: 40px;
    height: 20px;
    background-color: var(--color-border);
    border-radius: 10px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.toggle-switch.active {
    background-color: hsl(0, 84%, 60%);
}

.toggle-knob {
    position: absolute;
    top: 2px;
    left: 2px;
    width: 16px;
    height: 16px;
    background-color: white;
    border-radius: 50%;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s;
}

.toggle-switch.active .toggle-knob {
    transform: translateX(20px);
}

.toggle-label {
    font-size: 0.875rem;
    color: var(--color-muted-foreground);
}

.toggle-warning {
    font-size: 0.75rem;
    color: hsl(0, 84%, 60%);
    font-weight: 600;
    margin-left: 0.5rem;
}

.activity-source {
    margin-top: 0.5rem;
    margin-left: 64px;
    font-size: 0.75rem;
    color: rgba(150, 10%, 45%, 0.7);
    font-style: italic;
}

/* Calculator Results */
.calculator-results {
    padding: 2rem;
    background: linear-gradient(135deg, hsl(140, 20%, 96%) 0%, hsl(200, 20%, 97%) 100%);
    border-top: 1px solid var(--color-border);
}

.calculator-results-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-bottom: 1.25rem;
}

.result-card {
    background-color: white;
    padding: 1.5rem 1rem;
    border-radius: 1rem;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
    text-align: center;
    position: relative;
    overflow: hidden;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.result-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-primary));
    border-radius: 1rem 1rem 0 0;
}

.result-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.1);
}

.result-icon-large {
    margin-bottom: 0.75rem;
}

.result-icon-large svg {
    width: 36px;
    height: 36px;
    color: var(--color-accent);
    opacity: 0.8;
}

.result-row {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.15rem;
}

.result-label-main {
    font-size: 0.8rem;
    color: var(--color-muted-foreground);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.result-value-main {
    font-family: var(--font-heading);
    font-weight: 900;
    font-size: 2.25rem;
    color: var(--color-accent);
    line-height: 1.1;
}

.result-unit {
    font-size: 0.8rem;
    color: var(--color-muted-foreground);
}

.result-level {
    background-color: white;
    padding: 1.5rem;
    border-radius: 1rem;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
    text-align: center;
    margin-bottom: 1rem;
}

.level-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 1.5rem;
    border-radius: 9999px;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.125rem;
    margin-bottom: 0.75rem;
}

.level-badge svg {
    width: 18px;
    height: 18px;
}

.level-excellent {
    background-color: rgba(34, 197, 94, 0.1);
    color: rgb(22, 163, 74);
}

.level-good {
    background-color: rgba(32, 178, 170, 0.1);
    color: var(--color-water-blue);
}

.level-regular {
    background-color: rgba(234, 179, 8, 0.1);
    color: var(--color-gold);
}

.level-high {
    background-color: rgba(239, 68, 68, 0.1);
    color: rgb(220, 38, 38);
}

.level-message {
    color: var(--color-muted-foreground);
    line-height: 1.6;
    max-width: 480px;
    margin: 0 auto;
}

.calculator-source {
    text-align: center;
    color: var(--color-muted-foreground);
    font-size: 0.75rem;
}

@media (max-width: 640px) {
    .calculator-results-grid {
        grid-template-columns: 1fr;
    }
    .result-value-main {
        font-size: 2rem;
    }
}

/* ==========================================
   CTA Section
   ========================================== */
.cta-section {
    padding: 6rem 0;
    background: linear-gradient(135deg, var(--color-water-blue-deep) 0%, var(--color-water-blue) 100%);
    text-align: center;
    color: white;
}

.cta-content {
    max-width: 42rem;
    margin: 0 auto;
}

.cta-icon {
    font-size: 4rem;
    margin-bottom: 1.5rem;
}

.cta-title {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: white;
}

.cta-description {
    font-size: 1.125rem;
    opacity: 0.9;
    margin-bottom: 2rem;
    line-height: 1.7;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2.5rem;
    background-color: white;
    color: var(--color-water-blue-deep);
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.125rem;
    border-radius: 0.75rem;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
    transition: all 0.2s;
}

.cta-button span {
    font-size: 1.5rem;
}

.cta-button {
    animation: pulse 2s ease-in-out infinite;
}

.cta-button:hover {
    transform: translateY(-4px) scale(1.08);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
    animation: none;
}

/* ==========================================
   Footer
   ========================================== */
.footer {
    background-color: var(--color-foreground);
    color: rgba(255, 255, 255, 0.8);
    padding: 3rem 0 1.5rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

@media (min-width: 768px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .footer-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.footer-logo-icon {
    font-size: 1.5rem;
}

.footer-logo-text {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.25rem;
    color: white;
}

.footer-description {
    font-size: 0.875rem;
    line-height: 1.6;
}

.footer-title {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1rem;
    color: white;
    margin-bottom: 1rem;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    font-size: 0.875rem;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: var(--color-water-blue-light);
}

.footer-text {
    font-size: 0.875rem;
    margin-bottom: 0.25rem;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.875rem;
}

/* ==========================================
   Animations & Utilities
   ========================================== */

/* Pulse animation for attention */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.8;
        transform: scale(1.05);
    }
}

/* Floating animation */
@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}

/* Shimmer effect */
@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

/* Rotate continuous */
@keyframes rotateContinuous {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}
.fade-in {
    opacity: 0;
    animation: fadeIn 0.6s ease-out forwards;
}

.fade-in-left {
    opacity: 0;
    animation: fadeInLeft 0.6s ease-out forwards;
}

.fade-in-right {
    opacity: 0;
    animation: fadeInRight 0.6s ease-out forwards;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Intersection Observer classes */
.fade-in.visible,
.fade-in-left.visible,
.fade-in-right.visible {
    animation-play-state: running;
}

/* ========================================== */
/* Modal de Autenticaci�n */
/* ========================================== */

.auth-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
    z-index: 10000;
    justify-content: center;
    align-items: center;
    animation: fadeIn 0.3s;
}

.auth-modal-content {
    background: white;
    border-radius: 20px;
    padding: 40px;
    max-width: 450px;
    width: 90%;
    position: relative;
    box-shadow: 0 25px 60px rgba(0,0,0,0.4);
    animation: slideUp 0.4s;
}

.auth-modal-close {
    position: absolute;
    top: 15px;
    right: 15px;
    background: none;
    border: none;
    font-size: 30px;
    color: #94a3b8;
    cursor: pointer;
    transition: color 0.3s;
    padding: 5px 10px;
}

.auth-modal-close:hover {
    color: #ef4444;
}

.auth-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 30px;
    border-bottom: 2px solid #e2e8f0;
}

.auth-tab {
    flex: 1;
    background: none;
    border: none;
    padding: 12px;
    font-size: 16px;
    font-weight: 600;
    color: #64748b;
    cursor: pointer;
    border-bottom: 3px solid transparent;
    transition: all 0.3s;
}

.auth-tab.active {
    color: #0891b2;
    border-bottom-color: #0891b2;
}

.auth-tab:hover {
    color: #0891b2;
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.auth-title {
    font-size: 28px;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 5px;
}

.auth-subtitle {
    font-size: 14px;
    color: #64748b;
    margin-bottom: 15px;
}

.auth-input {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    font-size: 15px;
    transition: all 0.3s;
    font-family: var(--font-body);
}

.auth-input:focus {
    outline: none;
    border-color: #0891b2;
    box-shadow: 0 0 0 3px rgba(8, 145, 178, 0.1);
}

.auth-button {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, #0891b2, #0e7490);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    margin-top: 10px;
}

.auth-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(8, 145, 178, 0.3);
}

.auth-button:active {
    transform: translateY(0);
}

.auth-message {
    font-size: 14px;
    text-align: center;
    margin-top: 10px;
    min-height: 20px;
    font-weight: 500;
}

.auth-info {
    background: #dbeafe;
    padding: 12px;
    border-radius: 8px;
    font-size: 13px;
    color: #1e40af;
    text-align: center;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from { 
        transform: translateY(50px); 
        opacity: 0; 
    }
    to { 
        transform: translateY(0); 
        opacity: 1; 
    }
}

@media (max-width: 768px) {
    .auth-modal-content {
        padding: 30px 20px;
        max-width: 95%;
    }
    
    .auth-title {
        font-size: 24px;
    }
}

/* ==========================================
   User Dropdown Menu
   ========================================== */
.user-dropdown-menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 99999;
    display: flex;
    align-items: flex-start;
    justify-content: flex-end;
    padding: 80px 20px 20px 20px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.user-dropdown-menu.active {
    opacity: 1;
    pointer-events: all;
}

.user-menu-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(2px);
}

.user-menu-content {
    position: relative;
    background: white;
    border-radius: 12px;
    padding: 8px;
    min-width: 240px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    animation: slideDownMenu 0.3s ease-out;
}

@keyframes slideDownMenu {
    from {
        transform: translateY(-20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.user-menu-header {
    padding: 12px 16px;
    border-bottom: 1px solid #e2e8f0;
    margin-bottom: 4px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.user-menu-avatar-wrap {
    width: 38px;
    height: 38px;
    border-radius: 9999px;
    overflow: hidden;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: #e2e8f0;
    flex-shrink: 0;
}

.user-menu-avatar {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.user-menu-avatar-fallback {
    width: 100%;
    height: 100%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #475569;
    font-size: 1rem;
}

.user-menu-info {
    min-width: 0;
    flex: 1;
}

.user-menu-name {
    display: block;
    font-weight: 700;
    font-size: 16px;
    color: #1e293b;
    font-family: var(--font-heading);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.user-menu-email {
    display: block;
    font-size: 13px;
    color: #64748b;
    margin-top: 2px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.user-menu-item {
    width: 100%;
    padding: 12px 16px;
    background: none;
    border: none;
    text-align: left;
    font-size: 15px;
    color: #1e293b;
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.2s;
    font-weight: 500;
    display: block;
    font-family: var(--font-body);
}

.user-menu-item:hover {
    background: #f1f5f9;
}

.user-menu-item.danger {
    color: #ef4444;
}

.user-menu-item.danger:hover {
    background: #fee2e2;
}

.user-menu-divider {
    height: 1px;
    background: #e2e8f0;
    margin: 4px 0;
}

body:not(.light-theme) .user-menu-divider {
    background: var(--color-border);
}

@media (max-width: 768px) {
    .user-dropdown-menu {
        align-items: flex-start;
        justify-content: center;
        padding: 100px 20px;
    }

    .user-menu-content {
        width: 100%;
        max-width: 300px;
    }
}

/* ==========================================
   Progress Modal
   ========================================== */
.progress-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 100000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.progress-modal.active {
    opacity: 1;
    pointer-events: all;
}

.progress-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
}

.progress-modal-content {
    position: relative;
    background: white;
    border-radius: 16px;
    padding: 32px;
    max-width: 600px;
    width: 100%;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: modalSlideUp 0.4s ease-out;
}

@keyframes modalSlideUp {
    from {
        transform: translateY(30px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.progress-modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 36px;
    height: 36px;
    background: #f1f5f9;
    border: none;
    border-radius: 50%;
    font-size: 20px;
    color: #64748b;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
}

.progress-modal-close:hover {
    background: #e2e8f0;
    color: #334155;
    transform: scale(1.1);
}

.progress-header {
    text-align: center;
    margin-bottom: 32px;
}

.progress-icon {
    font-size: 64px;
    margin-bottom: 16px;
    animation: bounce 1s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.progress-title {
    font-size: 32px;
    font-weight: 800;
    color: #1e293b;
    margin: 0 0 8px 0;
    font-family: var(--font-heading);
}

.progress-subtitle {
    font-size: 18px;
    color: #64748b;
    margin: 0;
    font-weight: 600;
}

.progress-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 16px;
}

.progress-stat-card {
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border-radius: 12px;
    padding: 20px;
    text-align: center;
    transition: all 0.3s;
    border: 2px solid transparent;
}

.progress-stat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
    border-color: var(--color-water-blue);
}

.progress-stat-icon {
    font-size: 36px;
    margin-bottom: 8px;
}

.progress-stat-value {
    font-size: 28px;
    font-weight: 800;
    color: #1e293b;
    margin-bottom: 4px;
    font-family: var(--font-heading);
}

.progress-stat-label {
    font-size: 13px;
    color: #64748b;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

@media (max-width: 768px) {
    .progress-modal-content {
        padding: 24px;
        max-width: 95%;
    }

    .progress-title {
        font-size: 24px;
    }

    .progress-icon {
        font-size: 48px;
    }

    .progress-stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .progress-stat-card {
        padding: 16px;
    }

    .progress-stat-icon {
        font-size: 28px;
    }

    .progress-stat-value {
        font-size: 22px;
    }
}

/* ==========================================
   Confirm Modal
   ========================================== */
.confirm-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 100001;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.confirm-modal.active {
    opacity: 1;
    pointer-events: all;
}

.confirm-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
}

.confirm-modal-content {
    position: relative;
    background: white;
    border-radius: 16px;
    padding: 32px;
    max-width: 400px;
    width: 100%;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    text-align: center;
    animation: modalPop 0.3s ease-out;
}

@keyframes modalPop {
    from {
        transform: scale(0.9);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

.confirm-icon {
    font-size: 56px;
    margin-bottom: 16px;
}

.confirm-title {
    font-size: 24px;
    font-weight: 800;
    color: #1e293b;
    margin: 0 0 12px 0;
    font-family: var(--font-heading);
}

.confirm-message {
    font-size: 16px;
    color: #64748b;
    margin: 0 0 24px 0;
    line-height: 1.5;
}

.confirm-buttons {
    display: flex;
    gap: 12px;
    justify-content: center;
}

.confirm-btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    font-family: var(--font-body);
}

.confirm-btn.cancel {
    background: #f1f5f9;
    color: #64748b;
}

.confirm-btn.cancel:hover {
    background: #e2e8f0;
    color: #475569;
}

.confirm-btn.confirm {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    color: white;
}

.confirm-btn.confirm:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(239, 68, 68, 0.4);
}

@media (max-width: 768px) {
    .confirm-modal-content {
        padding: 24px;
    }

    .confirm-title {
        font-size: 20px;
    }

    .confirm-buttons {
        flex-direction: column;
    }

    .confirm-btn {
        width: 100%;
    }
}

/* ==========================================
   Nav Icon Buttons (Volume, Theme)
   ========================================== */
.nav-icon-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    margin-left: 0.5rem;
    padding: 0;
    border-radius: 0.5rem;
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--color-primary-foreground);
    border: 1px solid rgba(255, 255, 255, 0.2);
    cursor: pointer;
    transition: all 0.2s;
}

.nav-icon-btn:hover {
    background-color: rgba(255, 255, 255, 0.2);
    transform: scale(1.08);
}

.nav-icon-btn svg {
    width: 18px;
    height: 18px;
    pointer-events: none;
}

/* ==========================================
   Settings Panel (Landing Page)
   ========================================== */
.settings-panel-overlay {
    position: fixed;
    inset: 0;
    z-index: 100000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.settings-panel-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
}

.settings-panel-content {
    position: relative;
    background: var(--color-background);
    border-radius: 16px;
    width: 100%;
    max-width: 520px;
    max-height: 85vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: modalSlideUp 0.35s ease-out;
}

.settings-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--color-border);
}

.settings-panel-header h2 {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-foreground);
    margin: 0;
}

.settings-panel-header h2 svg {
    width: 22px;
    height: 22px;
    color: var(--color-accent);
}

.settings-panel-close {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-muted);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    color: var(--color-muted-foreground);
    transition: all 0.2s;
}

.settings-panel-close:hover {
    background: var(--color-border);
    color: var(--color-foreground);
    transform: scale(1.1);
}

.settings-panel-close svg {
    width: 18px;
    height: 18px;
}

/* Tabs Nav */
.settings-tabs-nav {
    display: flex;
    border-bottom: 1px solid var(--color-border);
    padding: 0 24px;
}

.settings-tab-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 12px 8px;
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    font-family: var(--font-heading);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-muted-foreground);
    cursor: pointer;
    transition: all 0.2s;
}

.settings-tab-btn:hover {
    color: var(--color-foreground);
}

.settings-tab-btn.active {
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
}

.settings-tab-btn svg {
    width: 16px;
    height: 16px;
}

/* Tabs Body */
.settings-tabs-body {
    padding: 24px;
}

.settings-tab-content {
    display: none;
}

.settings-tab-content.active {
    display: block;
}

/* Profile Card */
.settings-profile-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    border-radius: 12px;
    background: var(--color-secondary);
    margin-bottom: 24px;
}

.settings-avatar-wrap {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-muted);
    flex-shrink: 0;
}

.settings-avatar-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.settings-avatar-fallback {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    color: var(--color-muted-foreground);
}

.settings-profile-name {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--color-foreground);
}

.settings-profile-email {
    font-size: 0.85rem;
    color: var(--color-muted-foreground);
    margin-top: 2px;
}

/* Sections */
.settings-section {
    margin-bottom: 24px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--color-border);
}

.settings-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.settings-section-title {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-foreground);
    margin: 0 0 4px 0;
}

.settings-section-desc {
    font-size: 0.85rem;
    color: var(--color-muted-foreground);
    margin: 0 0 12px 0;
    line-height: 1.5;
}

.settings-input {
    width: 100%;
    padding: 10px 14px;
    border: 2px solid var(--color-border);
    border-radius: 8px;
    font-size: 0.9rem;
    font-family: var(--font-body);
    background: var(--color-background);
    color: var(--color-foreground);
    transition: border-color 0.2s;
    margin-bottom: 8px;
}

.settings-input:focus {
    outline: none;
    border-color: var(--color-accent);
}

.settings-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 20px;
    background: linear-gradient(135deg, var(--color-accent), var(--color-water-blue-deep));
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    font-family: var(--font-body);
}

.settings-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(32, 178, 170, 0.3);
}

.settings-btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--color-secondary);
    color: var(--color-foreground);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    font-family: var(--font-body);
}

.settings-btn-secondary:hover {
    background: var(--color-muted);
}

.settings-btn-secondary svg {
    width: 16px;
    height: 16px;
}

.settings-btn-danger {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 20px;
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    font-family: var(--font-body);
}

.settings-btn-danger:hover {
    background: rgba(239, 68, 68, 0.2);
}

.settings-msg {
    font-size: 0.8rem;
    min-height: 18px;
    margin-top: 6px;
    font-weight: 500;
}

.settings-danger-zone {
    border: 1px solid rgba(239, 68, 68, 0.2);
    border-radius: 10px;
    padding: 16px;
    background: rgba(239, 68, 68, 0.03);
}

/* Toggle switch */
.settings-toggle-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 0;
    color: var(--color-foreground);
    font-size: 0.95rem;
}

.settings-toggle {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
}

.settings-toggle input {
    opacity: 0;
    width: 0;
    height: 0;
}

.settings-toggle-slider {
    position: absolute;
    inset: 0;
    background-color: var(--color-border);
    border-radius: 24px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.settings-toggle-slider::before {
    content: '';
    position: absolute;
    width: 18px;
    height: 18px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    border-radius: 50%;
    transition: transform 0.3s;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.settings-toggle input:checked + .settings-toggle-slider {
    background-color: var(--color-accent);
}

.settings-toggle input:checked + .settings-toggle-slider::before {
    transform: translateX(20px);
}

/* Volume slider */
.settings-volume-wrap {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 0;
    margin-bottom: 12px;
}

.settings-volume-wrap svg {
    width: 20px;
    height: 20px;
    color: var(--color-muted-foreground);
    flex-shrink: 0;
}

.settings-slider {
    flex: 1;
    -webkit-appearance: none;
    appearance: none;
    height: 6px;
    border-radius: 3px;
    background: var(--color-border);
    outline: none;
}

.settings-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--color-accent);
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}

.settings-volume-pct {
    min-width: 40px;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--color-accent);
}

/* ==========================================
   Theme Transition
   ========================================== */
body,
body * {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

/* Exclude animations so they don't get transition interference */
.hero *, .water-drop, .ocean-layer, [class*="animate"], .cta-button {
    transition: none;
}

/* ==========================================
   DARK MODE (default = light-theme on body)
   When light-theme is removed → dark mode
   ========================================== */
body:not(.light-theme) {
    --color-background: hsl(210, 25%, 8%);
    --color-foreground: hsl(210, 15%, 90%);
    --color-primary: hsl(145, 45%, 35%);
    --color-primary-foreground: hsl(0, 0%, 100%);
    --color-secondary: hsl(210, 20%, 13%);
    --color-secondary-foreground: hsl(145, 35%, 65%);
    --color-muted: hsl(210, 18%, 11%);
    --color-muted-foreground: hsl(210, 10%, 55%);
    --color-accent: hsl(200, 85%, 55%);
    --color-accent-foreground: hsl(0, 0%, 100%);
    --color-border: hsl(210, 15%, 18%);
    --color-ucol-green: hsl(145, 45%, 30%);
    --color-ucol-green-light: hsl(145, 35%, 40%);
    --shadow-card: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-card-hover: 0 20px 25px -5px rgba(0, 0, 0, 0.3), 0 10px 10px -5px rgba(0, 0, 0, 0.15);
}

/* --- Navbar dark --- */
body:not(.light-theme) .navbar {
    background-color: hsl(210, 30%, 10%);
}

body:not(.light-theme) .navbar.scrolled {
    background-color: rgba(15, 23, 42, 0.95);
}

body:not(.light-theme) .nav-mobile {
    background-color: hsl(210, 30%, 10%);
}

/* --- Feature cards dark --- */
body:not(.light-theme) .feature-card {
    background-color: hsl(210, 20%, 13%);
    border-color: hsl(210, 15%, 20%);
}

body:not(.light-theme) .feature-card:hover {
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.4);
}

/* --- Calculator dark --- */
body:not(.light-theme) .calculator-card-full {
    background-color: hsl(210, 20%, 12%);
}

body:not(.light-theme) .activity-card:hover {
    background-color: hsl(210, 20%, 16%);
}

body:not(.light-theme) .activity-btn {
    background-color: rgba(100, 200, 150, 0.15);
    color: var(--color-primary);
}

body:not(.light-theme) .activity-btn:hover {
    background-color: rgba(100, 200, 150, 0.25);
}

/* --- About card --- */
body:not(.light-theme) .about-card-inner {
    background: linear-gradient(135deg, hsl(145, 40%, 18%) 0%, hsl(145, 30%, 25%) 100%);
}

/* --- Features section gradient --- */
body:not(.light-theme) .features-section {
    background: linear-gradient(to bottom, hsl(210, 20%, 10%) 0%, hsl(210, 25%, 8%) 100%);
}

/* --- Footer dark --- */
body:not(.light-theme) .footer {
    background-color: hsl(210, 30%, 6%);
}

/* --- Auth Modal dark --- */
body:not(.light-theme) .auth-modal-content {
    background: hsl(210, 20%, 12%);
}

body:not(.light-theme) .auth-tabs {
    border-bottom-color: var(--color-border);
}

body:not(.light-theme) .auth-tab {
    color: var(--color-muted-foreground);
}

body:not(.light-theme) .auth-tab.active {
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
}

body:not(.light-theme) .auth-title {
    color: var(--color-foreground);
}

body:not(.light-theme) .auth-subtitle {
    color: var(--color-muted-foreground);
}

body:not(.light-theme) .auth-input {
    background: hsl(210, 20%, 10%);
    border-color: var(--color-border);
    color: var(--color-foreground);
}

body:not(.light-theme) .auth-input:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.15);
}

body:not(.light-theme) .auth-info {
    background: rgba(56, 189, 248, 0.1);
    color: var(--color-accent);
}

/* --- User Dropdown dark --- */
body:not(.light-theme) .user-menu-content {
    background: hsl(210, 20%, 12%);
    border: 1px solid var(--color-border);
}

body:not(.light-theme) .user-menu-header {
    border-bottom-color: var(--color-border);
}

body:not(.light-theme) .user-menu-name {
    color: var(--color-foreground);
}

body:not(.light-theme) .user-menu-email {
    color: var(--color-muted-foreground);
}

body:not(.light-theme) .user-menu-item {
    color: var(--color-foreground);
}

body:not(.light-theme) .user-menu-item:hover {
    background: hsl(210, 20%, 16%);
}

body:not(.light-theme) .user-menu-item.danger:hover {
    background: rgba(239, 68, 68, 0.15);
}

body:not(.light-theme) .user-menu-avatar-wrap {
    background: hsl(210, 20%, 18%);
}

body:not(.light-theme) .user-menu-avatar-fallback {
    color: var(--color-muted-foreground);
}

/* --- Progress Modal dark --- */
body:not(.light-theme) .progress-modal-content {
    background: hsl(210, 20%, 12%);
}

body:not(.light-theme) .progress-modal-close {
    background: hsl(210, 20%, 16%);
    color: var(--color-muted-foreground);
}

body:not(.light-theme) .progress-modal-close:hover {
    background: hsl(210, 20%, 20%);
    color: var(--color-foreground);
}

body:not(.light-theme) .progress-title {
    color: var(--color-foreground);
}

body:not(.light-theme) .progress-subtitle {
    color: var(--color-muted-foreground);
}

body:not(.light-theme) .progress-stat-card {
    background: linear-gradient(135deg, hsl(210, 18%, 13%) 0%, hsl(210, 20%, 15%) 100%);
}

body:not(.light-theme) .progress-stat-card:hover {
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

body:not(.light-theme) .progress-stat-value {
    color: var(--color-foreground);
}

body:not(.light-theme) .progress-stat-label {
    color: var(--color-muted-foreground);
}

/* --- Confirm Modal dark --- */
body:not(.light-theme) .confirm-modal-content {
    background: hsl(210, 20%, 12%);
}

body:not(.light-theme) .confirm-title {
    color: var(--color-foreground);
}

body:not(.light-theme) .confirm-message {
    color: var(--color-muted-foreground);
}

body:not(.light-theme) .confirm-btn.cancel {
    background: hsl(210, 20%, 16%);
    color: var(--color-muted-foreground);
}

body:not(.light-theme) .confirm-btn.cancel:hover {
    background: hsl(210, 20%, 20%);
    color: var(--color-foreground);
}

/* --- Settings Panel dark --- */
body:not(.light-theme) .settings-panel-content {
    background: hsl(210, 20%, 10%);
}

/* ==========================================
   Boss Showcase – Landing Page
   ========================================== */
.boss-showcase-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    max-width: 1100px;
    margin: 0 auto 3rem;
}

.boss-card {
    background: linear-gradient(160deg, hsl(210, 25%, 96%) 0%, hsl(210, 20%, 92%) 100%);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 1.75rem 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    overflow: hidden;
}

.boss-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #ef4444, #f97316);
    border-radius: 16px 16px 0 0;
}

.boss-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
}

.boss-badge {
    display: inline-block;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 0.3rem 0.75rem;
    border-radius: 6px;
    width: fit-content;
    background: rgba(239, 68, 68, 0.12);
    color: #dc2626;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.boss-card:nth-child(2) .boss-badge {
    background: rgba(245, 158, 11, 0.12);
    color: #d97706;
    border-color: rgba(245, 158, 11, 0.2);
}

.boss-card:nth-child(2)::before {
    background: linear-gradient(90deg, #f59e0b, #eab308);
}

.boss-card:nth-child(3) .boss-badge {
    background: rgba(139, 92, 246, 0.12);
    color: #7c3aed;
    border-color: rgba(139, 92, 246, 0.2);
}

.boss-card:nth-child(3)::before {
    background: linear-gradient(90deg, #8b5cf6, #6366f1);
}

.boss-name {
    font-family: var(--font-display, 'Orbitron', sans-serif);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-foreground);
    letter-spacing: 0.01em;
}

.boss-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.boss-stat {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--color-muted-foreground);
    background: rgba(0, 0, 0, 0.04);
    padding: 0.3rem 0.65rem;
    border-radius: 6px;
}

.boss-stat svg {
    width: 14px;
    height: 14px;
    stroke: var(--color-accent);
    flex-shrink: 0;
}

.boss-stat strong {
    color: var(--color-foreground);
}

.boss-desc {
    font-size: 0.85rem;
    line-height: 1.55;
    color: var(--color-muted-foreground);
    margin-top: auto;
}

/* Boss Showcase dark mode */
body:not(.light-theme) .boss-card {
    background: linear-gradient(160deg, hsl(210, 25%, 12%) 0%, hsl(210, 22%, 9%) 100%);
    border-color: rgba(255, 255, 255, 0.08);
}

body:not(.light-theme) .boss-card:hover {
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

body:not(.light-theme) .boss-badge {
    background: rgba(239, 68, 68, 0.15);
    color: #f87171;
    border-color: rgba(239, 68, 68, 0.25);
}

body:not(.light-theme) .boss-card:nth-child(2) .boss-badge {
    background: rgba(245, 158, 11, 0.15);
    color: #fbbf24;
    border-color: rgba(245, 158, 11, 0.25);
}

body:not(.light-theme) .boss-card:nth-child(3) .boss-badge {
    background: rgba(139, 92, 246, 0.15);
    color: #a78bfa;
    border-color: rgba(139, 92, 246, 0.25);
}

body:not(.light-theme) .boss-name {
    color: hsl(210, 15%, 90%);
}

body:not(.light-theme) .boss-stat {
    background: rgba(255, 255, 255, 0.05);
    color: hsl(210, 15%, 60%);
}

body:not(.light-theme) .boss-stat strong {
    color: hsl(210, 15%, 90%);
}

body:not(.light-theme) .boss-desc {
    color: hsl(210, 15%, 55%);
}

/* Boss Showcase responsive */
@media (max-width: 900px) {
    .boss-showcase-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
    }
}

@media (max-width: 480px) {
    .boss-card {
        padding: 1.25rem 1rem;
    }
    .boss-name {
        font-size: 1.05rem;
    }
}

body:not(.light-theme) .settings-danger-zone {
    border-color: rgba(239, 68, 68, 0.25);
    background: rgba(239, 68, 68, 0.05);
}

/* --- Stat cards dark hover --- */
body:not(.light-theme) .stat-card:hover {
    background-color: rgba(56, 189, 248, 0.1);
    box-shadow: 0 10px 20px rgba(56, 189, 248, 0.15);
}

/* --- Scroll indicator --- */
body:not(.light-theme) .hero-scroll {
    color: rgba(255, 255, 255, 0.55);
}

/* --- Level badges visibility in dark --- */
body:not(.light-theme) .level-excellent {
    background-color: rgba(34, 197, 94, 0.15);
}

body:not(.light-theme) .level-good {
    background-color: rgba(56, 189, 248, 0.15);
}

body:not(.light-theme) .level-regular {
    background-color: rgba(234, 179, 8, 0.15);
}

body:not(.light-theme) .level-high {
    background-color: rgba(239, 68, 68, 0.15);
}

/* --- Toggle switch in dark --- */
body:not(.light-theme) .toggle-switch {
    background-color: hsl(210, 15%, 22%);
}

body:not(.light-theme) .toggle-knob {
    background-color: hsl(210, 15%, 85%);
}

/* ==========================================================================
   HISTORIA / NARRATIVA SECTION
   ========================================================================== */

.section-historia {
    padding: 4rem 0 3rem;
    background: linear-gradient(180deg, transparent 0%, hsl(150, 15%, 96%) 8%, hsl(150, 15%, 96%) 92%, transparent 100%);
    color: var(--color-foreground);
}

.section-label {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 0.75rem;
    padding: 0.35rem 0.8rem;
    background: rgba(32, 178, 170, 0.08);
    border-radius: 20px;
    border: 1px solid rgba(32, 178, 170, 0.15);
}

.section-label svg {
    width: 16px;
    height: 16px;
}

.section-heading {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-foreground);
    margin-bottom: 0.5rem;
    font-family: var(--font-heading);
    line-height: 1.15;
}

.section-description {
    color: var(--color-muted-foreground);
    font-size: 0.95rem;
    margin-bottom: 2rem;
}

.historia-grid {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 2.5rem;
    text-align: left;
    margin-top: 2.5rem;
}

.historia-lore {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.lore-chapter {
    display: flex;
    gap: 1.25rem;
    padding: 1.25rem 1.5rem;
    background: white;
    border: 1px solid var(--color-border);
    border-left: 4px solid var(--color-accent);
    border-radius: 12px;
    transition: all 0.3s ease;
    position: relative;
}

.lore-chapter:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    border-left-color: var(--color-primary);
}

.lore-chapter-num {
    font-size: 2rem;
    font-weight: 900;
    color: var(--color-accent);
    min-width: 48px;
    text-align: center;
    line-height: 1;
    font-family: var(--font-heading);
    opacity: 0.7;
}

.lore-chapter-body h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-foreground);
    margin: 0 0 0.5rem;
    font-family: var(--font-heading);
}

.lore-chapter-body p {
    font-size: 0.9rem;
    line-height: 1.65;
    color: var(--color-muted-foreground);
    margin: 0;
}

.lore-chapter-body em {
    color: var(--color-accent);
    font-style: italic;
}

.historia-visual {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    position: sticky;
    top: 100px;
    align-self: start;
}

.historia-card {
    padding: 1.5rem;
    background: white;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
}

.historia-card-header {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--color-accent);
    font-weight: 700;
    color: var(--color-foreground);
    font-size: 1rem;
}

.historia-card-header svg {
    width: 20px;
    height: 20px;
    color: var(--color-accent);
    flex-shrink: 0;
}

.historia-mechanics,
.historia-enemies {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.historia-mechanics li {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.85rem;
    color: var(--color-muted-foreground);
    padding: 0.4rem 0.5rem;
    border-radius: 6px;
    transition: background 0.2s;
}

.historia-mechanics li:hover {
    background: rgba(32, 178, 170, 0.06);
}

.historia-mechanics li svg {
    width: 16px;
    height: 16px;
    color: var(--color-accent);
    flex-shrink: 0;
}

.historia-enemies li {
    padding: 0.6rem 0.5rem;
    border-radius: 6px;
    transition: background 0.2s;
}

.historia-enemies li:hover {
    background: rgba(239, 68, 68, 0.04);
}

.enemy-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.2rem;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--color-foreground);
}

.enemy-desc {
    font-size: 0.78rem;
    color: var(--color-muted-foreground);
}

.badge-boss {
    display: inline-block;
    font-size: 0.6rem;
    background: linear-gradient(135deg, #ef4444, #dc2626);
    color: white;
    padding: 0.15rem 0.45rem;
    border-radius: 4px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.btn-lore-play {
    margin-top: 1rem;
    padding: 0.7rem 1.5rem;
    background: linear-gradient(135deg, var(--color-accent) 0%, #0891b2 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.95rem;
    box-shadow: 0 4px 15px rgba(8, 145, 178, 0.25);
}

.btn-lore-play:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(8, 145, 178, 0.4);
}

.btn-lore-play svg {
    width: 18px;
    height: 18px;
}

/* ─── Chapter Mission Cards ─── */
.chapter-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.25rem;
}

.chapter-card {
    background: white;
    border: 1px solid var(--color-border);
    border-radius: 14px;
    padding: 1.5rem;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.chapter-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-primary));
}

.chapter-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.1);
}

.chapter-card-num {
    display: inline-block;
    font-size: 0.65rem;
    font-weight: 800;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.5rem;
    padding: 0.2rem 0.6rem;
    background: rgba(32, 178, 170, 0.08);
    border-radius: 4px;
}

.chapter-card-title {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-foreground);
    margin: 0 0 0.5rem;
    line-height: 1.3;
}

.chapter-card-desc {
    font-size: 0.85rem;
    color: var(--color-muted-foreground);
    line-height: 1.55;
    margin: 0 0 1rem;
}

.chapter-card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.chapter-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--color-muted-foreground);
    background: var(--color-muted);
    padding: 0.25rem 0.6rem;
    border-radius: 6px;
}

.chapter-tag svg {
    width: 13px;
    height: 13px;
}

.chapter-tag.waves {
    color: var(--color-accent);
    background: rgba(32, 178, 170, 0.08);
}

.chapter-tag.reward {
    color: var(--color-gold);
    background: rgba(234, 179, 8, 0.08);
}

/* ─── Historia Responsive ─── */
@media (max-width: 900px) {
    .historia-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .historia-visual {
        position: static;
    }
}

@media (max-width: 640px) {
    .section-heading {
        font-size: 1.75rem;
    }
    .lore-chapter {
        flex-direction: column;
        gap: 0.75rem;
    }
    .lore-chapter-num {
        text-align: left;
        font-size: 1.5rem;
    }
    .chapter-cards-grid {
        grid-template-columns: 1fr;
    }
}

/* ─── Historia Dark Mode ─── */
body:not(.light-theme) .section-historia {
    background: linear-gradient(180deg, transparent 0%, hsl(210, 22%, 9%) 8%, hsl(210, 22%, 9%) 92%, transparent 100%);
}

body:not(.light-theme) .section-label {
    background: rgba(56, 189, 248, 0.08);
    border-color: rgba(56, 189, 248, 0.15);
}

body:not(.light-theme) .lore-chapter {
    background: hsl(210, 20%, 12%);
    border-color: hsl(210, 15%, 18%);
    border-left-color: var(--color-accent);
}

body:not(.light-theme) .lore-chapter:hover {
    background: hsl(210, 20%, 14%);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

body:not(.light-theme) .historia-card {
    background: hsl(210, 20%, 12%);
    border-color: hsl(210, 15%, 18%);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
}

body:not(.light-theme) .historia-mechanics li:hover {
    background: rgba(56, 189, 248, 0.06);
}

body:not(.light-theme) .historia-enemies li:hover {
    background: rgba(239, 68, 68, 0.06);
}

body:not(.light-theme) .chapter-card {
    background: hsl(210, 20%, 12%);
    border-color: hsl(210, 15%, 18%);
}

body:not(.light-theme) .chapter-card:hover {
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
}

body:not(.light-theme) .chapter-card-num {
    background: rgba(56, 189, 248, 0.1);
}

body:not(.light-theme) .chapter-tag {
    background: hsl(210, 18%, 16%);
}

body:not(.light-theme) .chapter-tag.waves {
    background: rgba(56, 189, 248, 0.1);
}

body:not(.light-theme) .chapter-tag.reward {
    background: rgba(234, 179, 8, 0.1);
}

/* ─── Calculator Results Dark Overrides (updated for grid) ─── */
body:not(.light-theme) .calculator-results {
    background: linear-gradient(135deg, hsl(210, 18%, 11%) 0%, hsl(210, 20%, 13%) 100%);
    border-color: var(--color-border);
}

body:not(.light-theme) .result-card {
    background-color: hsl(210, 20%, 14%);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
}

body:not(.light-theme) .result-card::before {
    background: linear-gradient(90deg, var(--color-accent), hsl(145, 45%, 35%));
}

body:not(.light-theme) .result-card:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

body:not(.light-theme) .result-level {
    background-color: hsl(210, 20%, 14%);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
}

/* ============================================
   PWA Install Banner
   ============================================ */
.pwa-install-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 20px;
    background: linear-gradient(135deg, #0c1a2e 0%, #164e63 100%);
    color: #fff;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.3);
    animation: pwaSlideUp 0.4s ease-out;
}

@keyframes pwaSlideUp {
    from { transform: translateY(100%); }
    to   { transform: translateY(0); }
}

.pwa-install-content {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1;
    min-width: 0;
}

.pwa-install-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    flex-shrink: 0;
}

.pwa-install-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}

.pwa-install-text strong {
    font-family: var(--font-heading, 'Orbitron', sans-serif);
    font-size: 0.95rem;
}

.pwa-install-text span {
    font-size: 0.8rem;
    opacity: 0.8;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.pwa-install-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.pwa-install-btn {
    padding: 8px 20px;
    background: #0891b2;
    color: #fff;
    border: none;
    border-radius: 8px;
    font-family: var(--font-heading, 'Orbitron', sans-serif);
    font-weight: 700;
    font-size: 0.85rem;
    cursor: pointer;
    transition: background 0.2s;
}

.pwa-install-btn:hover {
    background: #06b6d4;
}

.pwa-dismiss-btn {
    background: none;
    border: none;
    color: rgba(255,255,255,0.6);
    font-size: 1.5rem;
    line-height: 1;
    cursor: pointer;
    padding: 4px 8px;
}

.pwa-dismiss-btn:hover {
    color: #fff;
}

@media (max-width: 480px) {
    .pwa-install-banner {
        flex-wrap: wrap;
        padding: 10px 14px;
    }
    .pwa-install-text span {
        white-space: normal;
    }
}