/* ===== CSS Custom Properties ===== */
:root {
    --color-midnight: #0A2342;
    --color-midnight-light: #1A3A5C;
    --color-midnight-dark: #061829;
    --color-mint: #34D399;
    --color-mint-light: #6EE7B7;
    --color-mint-dark: #10B981;
    --color-mint-pale: #D1FAE5;
    --color-mint-ultra-pale: #F0FAF5;
    --color-cream: #FAFFF8;
    --color-white: #FFFFFF;
    --color-text-dark: #0A2342;
    --color-text-medium: #374151;
    --color-text-light: #6B7280;
    --color-border: #D1D5DB;
    --color-border-light: #E5E7EB;
    
    --font-heading: 'Nunito', sans-serif;
    --font-body: 'Quicksand', sans-serif;
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --radius-full: 9999px;
    
    --shadow-sm: 0 1px 3px rgba(10, 35, 66, 0.08), 0 1px 2px rgba(10, 35, 66, 0.06);
    --shadow-md: 0 4px 14px rgba(10, 35, 66, 0.1), 0 2px 6px rgba(10, 35, 66, 0.06);
    --shadow-lg: 0 10px 30px rgba(10, 35, 66, 0.12), 0 4px 10px rgba(10, 35, 66, 0.08);
    --shadow-xl: 0 20px 50px rgba(10, 35, 66, 0.15), 0 8px 16px rgba(10, 35, 66, 0.1);
    
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-text-dark);
    background-color: var(--color-cream);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

ul {
    list-style: none;
}

/* ===== Container ===== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Typography ===== */
h1, h2, h3, h4 {
    font-family: var(--font-heading);
    font-weight: 800;
    line-height: 1.2;
    color: var(--color-text-dark);
}

/* ===== Section Header ===== */
.section-header {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 64px;
}

.section-tag {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-mint-dark);
    background: var(--color-mint-pale);
    padding: 6px 16px;
    border-radius: var(--radius-full);
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(28px, 4vw, 44px);
    margin-bottom: 16px;
    color: var(--color-midnight);
}

.section-title--light {
    color: var(--color-white);
}

.section-subtitle {
    font-size: 18px;
    color: var(--color-text-light);
    line-height: 1.7;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 15px;
    padding: 14px 28px;
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    white-space: nowrap;
    text-align: center;
}

.btn-primary {
    background: var(--color-mint);
    color: var(--color-midnight);
    box-shadow: 0 4px 14px rgba(52, 211, 153, 0.4);
}

.btn-primary:hover {
    background: var(--color-mint-light);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(52, 211, 153, 0.5);
}

.btn-outline-light {
    background: transparent;
    color: var(--color-white);
    border: 2px solid rgba(255, 255, 255, 0.5);
}

.btn-outline-light:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: var(--color-white);
    transform: translateY(-2px);
}

.btn-lg {
    padding: 16px 32px;
    font-size: 16px;
}

.btn-full {
    width: 100%;
    justify-content: center;
}

/* ===== Navigation ===== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(250, 255, 248, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(10, 35, 66, 0.06);
    transition: all var(--transition-base);
}

.nav.scrolled {
    background: rgba(250, 255, 248, 0.97);
    box-shadow: var(--shadow-sm);
}

.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 20px;
    color: var(--color-midnight);
    z-index: 1001;
}

.nav-logo-icon {
    font-size: 24px;
    color: var(--color-mint-dark);
}

.nav-logo-text {
    letter-spacing: -0.02em;
}

.nav-logo-accent {
    color: var(--color-mint-dark);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 15px;
    color: var(--color-text-medium);
    padding: 8px 16px;
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.nav-link:hover {
    color: var(--color-midnight);
    background: var(--color-mint-pale);
}

.nav-cta {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 14px;
    color: var(--color-midnight);
    background: var(--color-mint);
    padding: 10px 22px;
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    box-shadow: 0 2px 8px rgba(52, 211, 153, 0.3);
}

.nav-cta:hover {
    background: var(--color-mint-light);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(52, 211, 153, 0.4);
}

/* Mobile Nav Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    z-index: 1001;
}

.nav-toggle-bar {
    display: block;
    width: 24px;
    height: 2.5px;
    background: var(--color-midnight);
    border-radius: 2px;
    transition: all var(--transition-base);
    transform-origin: center;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
    opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Nav Overlay */
.nav-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(10, 35, 66, 0.5);
    backdrop-filter: blur(4px);
    z-index: 999;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.nav-overlay.active {
    display: block;
    opacity: 1;
}

/* ===== Hero Section ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--color-midnight);
    overflow: hidden;
    padding: 120px 0 80px;
}

.hero-bg-pattern {
    position: absolute;
    inset: 0;
    background-image: 
        radial-gradient(ellipse 80% 60% at 70% 40%, rgba(52, 211, 153, 0.12) 0%, transparent 60%),
        radial-gradient(ellipse 50% 80% at 20% 80%, rgba(52, 211, 153, 0.08) 0%, transparent 50%);
    pointer-events: none;
}

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

.note {
    position: absolute;
    font-size: 28px;
    color: rgba(52, 211, 153, 0.15);
    animation: float-note 6s ease-in-out infinite;
}

.note-1 { top: 15%; left: 5%; animation-delay: 0s; font-size: 32px; }
.note-2 { top: 25%; right: 8%; animation-delay: 1s; font-size: 24px; }
.note-3 { top: 60%; left: 3%; animation-delay: 2s; font-size: 20px; }
.note-4 { bottom: 20%; right: 5%; animation-delay: 0.5s; font-size: 36px; }
.note-5 { top: 40%; left: 12%; animation-delay: 3s; font-size: 22px; }
.note-6 { bottom: 35%; right: 12%; animation-delay: 1.5s; font-size: 26px; }

@keyframes float-note {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(8deg); }
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-heading);
    font-size: 13px;
    font-weight: 700;
    color: var(--color-mint);
    background: rgba(52, 211, 153, 0.12);
    border: 1px solid rgba(52, 211, 153, 0.25);
    padding: 8px 18px;
    border-radius: var(--radius-full);
    margin-bottom: 24px;
}

.hero-badge-dot {
    width: 8px;
    height: 8px;
    background: var(--color-mint);
    border-radius: 50%;
    animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(1.3); }
}

.hero-title {
    font-size: clamp(36px, 5vw, 60px);
    color: var(--color-white);
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.hero-title-accent {
    color: var(--color-mint);
}

.hero-subtitle {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.75);
    line-height: 1.8;
    margin-bottom: 36px;
    max-width: 520px;
}

.hero-subtitle em {
    color: var(--color-mint-light);
    font-style: normal;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 48px;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 24px;
}

.hero-stat {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.hero-stat-number {
    font-family: var(--font-heading);
    font-size: 28px;
    font-weight: 800;
    color: var(--color-mint);
    line-height: 1;
}

.hero-stat-label {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.55);
    font-weight: 500;
}

.hero-stat-divider {
    width: 1px;
    height: 40px;
    background: rgba(255, 255, 255, 0.15);
}

/* Hero Visual */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
}

.hero-image-main {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    aspect-ratio: 500/620;
}

.hero-image-main img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-image-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(10, 35, 66, 0.3) 0%, transparent 40%);
    border-radius: var(--radius-xl);
}

.hero-floating-card {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--color-white);
    padding: 14px 18px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    z-index: 2;
    animation: float-card 4s ease-in-out infinite;
}

.hero-floating-card--left {
    top: 15%;
    left: -30px;
    animation-delay: 0.5s;
}

.hero-floating-card--right {
    bottom: 25%;
    right: -20px;
    animation-delay: 1.5s;
}

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

.floating-card-icon {
    font-size: 24px;
    line-height: 1;
}

.floating-card-text {
    display: flex;
    flex-direction: column;
}

.floating-card-text strong {
    font-family: var(--font-heading);
    font-size: 14px;
    font-weight: 700;
    color: var(--color-midnight);
    line-height: 1.2;
}

.floating-card-text span {
    font-size: 12px;
    color: var(--color-text-light);
}

/* Hero Wave */
.hero-wave {
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    line-height: 0;
}

.hero-wave svg {
    width: 100%;
    height: 80px;
}

/* ===== Programs Section ===== */
.programs {
    padding: 100px 0;
    background: var(--color-mint-ultra-pale);
}

.programs-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.program-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    transition: all var(--transition-base);
    border: 1px solid transparent;
    position: relative;
    overflow: hidden;
}

.program-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--color-mint);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

.program-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(52, 211, 153, 0.2);
}

.program-card:hover::before {
    transform: scaleX(1);
}

.program-card-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-mint-pale);
    border-radius: var(--radius-md);
    margin-bottom: 20px;
    color: var(--color-mint-dark);
    transition: all var(--transition-base);
}

.program-card:hover .program-card-icon {
    background: var(--color-mint);
    color: var(--color-midnight);
    transform: scale(1.05);
}

.program-card-title {
    font-size: 20px;
    margin-bottom: 10px;
    color: var(--color-midnight);
}

.program-card-desc {
    font-size: 15px;
    color: var(--color-text-light);
    line-height: 1.7;
    margin-bottom: 20px;
}

.program-card-features {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.program-card-features li {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--color-text-medium);
    font-weight: 500;
}

.program-card-features li::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--color-mint);
    border-radius: 50%;
    flex-shrink: 0;
}

/* ===== Why Us Section ===== */
.why-us {
    padding: 100px 0;
    background: var(--color-midnight);
    position: relative;
    overflow: hidden;
}

.why-us::before {
    content: '';
    position: absolute;
    top: -200px;
    right: -200px;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(52, 211, 153, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.why-us-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.why-us-visual {
    position: relative;
}

.why-us-image-group {
    position: relative;
}

.why-us-image-main {
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    aspect-ratio: 4