/**
 * style.css - 소리튠 영어공부법 메인 스타일시트
 * Cosmic Theme for English Learning Platform
 * Location: /assets/css/style.css
 */

/* ==========================================
   CSS Variables - Cosmic Color Scheme
   ========================================== */
:root {
    /* Primary Colors */
    --primary: #667eea;
    --primary-dark: #5a67d8;
    --primary-light: #7c8ff4;

    /* Secondary Colors */
    --secondary: #764ba2;
    --secondary-dark: #6b4190;
    --secondary-light: #8b5cb5;

    /* Accent Colors */
    --accent: #f093fb;
    --accent-light: #f5b5fc;
    --accent-dark: #e074f5;

    /* Cosmic Gradients */
    --gradient-cosmic: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-aurora: linear-gradient(135deg, #667eea 0%, #f093fb 50%, #764ba2 100%);
    --gradient-nebula: linear-gradient(180deg, #0a0a1a 0%, #1a1a3a 50%, #2d1b4e 100%);
    --gradient-energy: linear-gradient(45deg, #667eea, #764ba2, #f093fb, #667eea);

    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: #b4b4d0;
    --text-muted: #8888a8;
    --text-dark: #1a1a2e;

    /* Background Colors */
    --bg-dark: #0a0a1a;
    --bg-card: rgba(255, 255, 255, 0.05);
    --bg-card-hover: rgba(255, 255, 255, 0.1);
    --bg-light: #f8f9ff;

    /* Shadows */
    --shadow-sm: 0 2px 10px rgba(102, 126, 234, 0.1);
    --shadow-md: 0 4px 20px rgba(102, 126, 234, 0.2);
    --shadow-lg: 0 10px 40px rgba(102, 126, 234, 0.3);
    --shadow-glow: 0 0 30px rgba(102, 126, 234, 0.5);

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 6rem;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-full: 50%;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Typography */
    --font-primary: 'Pretendard', 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-heading: 'Pretendard', 'Noto Sans KR', sans-serif;

    /* Z-Index Layers */
    --z-header: 1000;
    --z-modal: 2000;
    --z-tooltip: 3000;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
    min-height: 100vh;
}

/* Background Stars Effect */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(2px 2px at 20px 30px, rgba(255,255,255,0.3), transparent),
        radial-gradient(2px 2px at 40px 70px, rgba(255,255,255,0.2), transparent),
        radial-gradient(1px 1px at 90px 40px, rgba(255,255,255,0.4), transparent),
        radial-gradient(2px 2px at 130px 80px, rgba(255,255,255,0.2), transparent),
        radial-gradient(1px 1px at 160px 120px, rgba(255,255,255,0.3), transparent);
    background-repeat: repeat;
    background-size: 200px 200px;
    pointer-events: none;
    z-index: -1;
    animation: twinkle 4s ease-in-out infinite;
}

@keyframes twinkle {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-normal);
}

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

ul, ol {
    list-style: none;
}

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

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
}

/* Visually Hidden (for accessibility) */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ==========================================
   Layout Components
   ========================================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-sm);
}

.container-wide {
    max-width: 1400px;
}

.container-narrow {
    max-width: 800px;
}

.section {
    padding: var(--space-xl) 0;
    position: relative;
}

.section-dark {
    background: var(--bg-dark);
}

.section-gradient {
    background: var(--gradient-nebula);
}

/* ==========================================
   Typography
   ========================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: var(--space-sm);
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--space-sm);
    color: var(--text-secondary);
}

.text-gradient {
    background: var(--gradient-cosmic);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

/* Section Titles */
.section-title {
    text-align: center;
    margin-bottom: var(--space-lg);
}

.section-title h2 {
    display: inline-block;
    position: relative;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--gradient-cosmic);
    border-radius: 2px;
}

.section-title p {
    max-width: 600px;
    margin: var(--space-md) auto 0;
}

/* ==========================================
   Header & Navigation
   ========================================== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-header);
    padding: var(--space-sm) 0;
    transition: var(--transition-normal);
    background: transparent;
}

.site-header.scrolled {
    background: rgba(10, 10, 26, 0.95);
    backdrop-filter: blur(20px);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 1.5rem;
    font-weight: 800;
    z-index: 1001;
}

.logo img {
    height: 45px;
    width: auto;
}

.logo-text {
    background: var(--gradient-cosmic);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Desktop Navigation */
.main-nav {
    display: none;
}

.main-nav ul {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.main-nav a {
    font-weight: 500;
    color: var(--text-secondary);
    padding: var(--space-xs) 0;
    position: relative;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-cosmic);
    transition: var(--transition-normal);
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--text-primary);
}

.main-nav a:hover::after,
.main-nav a.active::after {
    width: 100%;
}

/* Dropdown Menu */
.nav-item-dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    background: rgba(26, 26, 46, 0.98);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-md);
    padding: var(--space-sm);
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-item-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.dropdown-menu a {
    display: block;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
}

.dropdown-menu a:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
}

.dropdown-menu a::after {
    display: none;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: 10px;
    z-index: 1001;
}

.mobile-menu-toggle span {
    display: block;
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition-normal);
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Navigation */
.mobile-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 10, 26, 0.98);
    backdrop-filter: blur(20px);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
}

.mobile-nav.active {
    opacity: 1;
    visibility: visible;
}

.mobile-nav ul {
    text-align: center;
}

.mobile-nav li {
    margin: var(--space-sm) 0;
}

.mobile-nav a {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-secondary);
    transition: var(--transition-normal);
}

.mobile-nav a:hover {
    color: var(--text-primary);
}

/* ==========================================
   Buttons
   ========================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-lg);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient-cosmic);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--primary);
}

.btn-ghost {
    background: transparent;
    color: var(--primary-light);
}

.btn-ghost:hover {
    background: rgba(102, 126, 234, 0.1);
}

.btn-lg {
    padding: 18px 40px;
    font-size: 1.125rem;
}

.btn-sm {
    padding: 10px 20px;
    font-size: 0.875rem;
}

.btn-icon {
    width: 50px;
    height: 50px;
    padding: 0;
    border-radius: var(--radius-full);
}

/* Button Ripple Effect */
.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-full);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:active::before {
    width: 300px;
    height: 300px;
}

/* ==========================================
   Cards
   ========================================== */
.card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-cosmic);
    transform: scaleX(0);
    transition: var(--transition-normal);
}

.card:hover {
    background: var(--bg-card-hover);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

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

.card-icon {
    width: 70px;
    height: 70px;
    background: var(--gradient-cosmic);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin-bottom: var(--space-sm);
}

.card-title {
    font-size: 1.25rem;
    margin-bottom: var(--space-xs);
}

.card-text {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Feature Card */
.feature-card {
    text-align: center;
    padding: var(--space-lg);
}

.feature-card .card-icon {
    margin: 0 auto var(--space-md);
}

/* Service Card */
.service-card {
    display: flex;
    gap: var(--space-md);
    align-items: flex-start;
}

.service-card .card-icon {
    flex-shrink: 0;
}

/* Team Card */
.team-card {
    text-align: center;
}

.team-card-image {
    width: 150px;
    height: 150px;
    border-radius: var(--radius-full);
    margin: 0 auto var(--space-md);
    overflow: hidden;
    border: 4px solid var(--primary);
    background: var(--gradient-cosmic);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
}

.team-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.team-card-role {
    color: var(--primary-light);
    font-size: 0.9rem;
    margin-bottom: var(--space-xs);
}

/* ==========================================
   Hero Section
   ========================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding-top: 80px;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
}

.hero-background::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-nebula);
    opacity: 0.9;
}

.hero-content {
    text-align: center;
    max-width: 900px;
    padding: var(--space-md);
}

.hero-badge {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(102, 126, 234, 0.2);
    border: 1px solid rgba(102, 126, 234, 0.5);
    border-radius: 30px;
    font-size: 0.9rem;
    color: var(--primary-light);
    margin-bottom: var(--space-md);
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    margin-bottom: var(--space-md);
    line-height: 1.2;
}

.hero-title .highlight {
    background: var(--gradient-aurora);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.3rem);
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto var(--space-lg);
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--space-lg);
    margin-top: var(--space-xl);
    flex-wrap: wrap;
}

.hero-stat {
    text-align: center;
}

.hero-stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--gradient-cosmic);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Floating Elements */
.floating-element {
    position: absolute;
    pointer-events: none;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(5deg); }
}

/* ==========================================
   Slider / Carousel
   ========================================== */
.slider-section {
    padding: var(--space-lg) 0;
    overflow: hidden;
}

.slider-container {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
    overflow: hidden;
}

.slider-track {
    display: flex;
    transition: transform 500ms ease;
}

.slider-slide {
    min-width: 100%;
    padding: 0 var(--space-sm);
}

.slider-slide-content {
    background: var(--gradient-cosmic);
    border-radius: var(--radius-lg);
    padding: var(--space-lg) var(--space-md);
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: visible;
    text-align: center;
}

.slider-slide-content::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
}

.slide-inner {
    text-align: center;
    position: relative;
    z-index: 1;
    max-width: 700px;
    width: 100%;
    margin: 0 auto;
    padding: 0 var(--space-sm);
    box-sizing: border-box;
}

.slide-title {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    margin-bottom: var(--space-sm);
}

.slide-text {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: var(--space-md);
}

/* Slider Navigation */
.slider-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-normal);
    z-index: 10;
}

.slider-nav:hover {
    background: rgba(255, 255, 255, 0.3);
}

.slider-nav-prev {
    left: 20px;
}

.slider-nav-next {
    right: 20px;
}

.slider-nav svg {
    width: 24px;
    height: 24px;
    fill: white;
}

/* Slider Pagination */
.slider-pagination {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: var(--space-md);
}

.slider-dot {
    width: 12px;
    height: 12px;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: var(--transition-normal);
}

.slider-dot.active {
    background: var(--primary);
    width: 30px;
    border-radius: 6px;
}

/* ==========================================
   Sound Block Section (Unique to Soritune)
   ========================================== */
.sound-block-section {
    padding: var(--space-xl) 0;
}

.sound-block-demo {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    margin-top: var(--space-md);
}

.sound-block-sentence {
    font-size: 1.5rem;
    margin-bottom: var(--space-md);
}

.sound-blocks {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    justify-content: center;
    margin-bottom: var(--space-md);
}

.sound-block {
    padding: 15px 25px;
    border-radius: var(--radius-md);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-normal);
    position: relative;
}

.sound-block-subject {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.sound-block-verb {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.sound-block-object {
    background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
}

.sound-block:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-glow);
}

.sound-block-korean {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: var(--space-xs);
    text-align: center;
}

/* Waveform Display */
.waveform-container {
    background: rgba(0, 0, 0, 0.3);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    margin-top: var(--space-md);
}

.waveform {
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 3px;
}

.waveform-bar {
    width: 4px;
    background: var(--gradient-cosmic);
    border-radius: 2px;
    animation: waveform 1s ease-in-out infinite;
}

@keyframes waveform {
    0%, 100% { height: 20px; }
    50% { height: 60px; }
}

/* ==========================================
   Learning Phase Section
   ========================================== */
.learning-phases {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-md);
}

.phase-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    position: relative;
    overflow: hidden;
}

.phase-number {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 4rem;
    font-weight: 800;
    color: rgba(255, 255, 255, 0.05);
}

.phase-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-cosmic);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: var(--space-sm);
}

.phase-title {
    font-size: 1.3rem;
    margin-bottom: var(--space-xs);
}

.phase-subtitle {
    color: var(--primary-light);
    font-size: 0.9rem;
    margin-bottom: var(--space-sm);
}

.phase-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ==========================================
   Testimonials
   ========================================== */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-md);
}

.testimonial-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    position: relative;
}

.testimonial-quote {
    font-size: 3rem;
    color: var(--primary);
    opacity: 0.3;
    position: absolute;
    top: 20px;
    left: 25px;
}

.testimonial-text {
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: var(--space-md);
    padding-left: var(--space-md);
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.testimonial-avatar {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-full);
    background: var(--gradient-cosmic);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
}

.testimonial-name {
    font-weight: 600;
}

.testimonial-role {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Star Rating */
.star-rating {
    display: flex;
    gap: 4px;
    margin-bottom: var(--space-sm);
}

.star-rating svg {
    width: 20px;
    height: 20px;
    fill: #ffd700;
}

/* ==========================================
   FAQ Accordion
   ========================================== */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-sm);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.faq-question {
    width: 100%;
    padding: var(--space-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    text-align: left;
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition-normal);
}

.faq-question:hover {
    background: var(--bg-card-hover);
}

.faq-icon {
    width: 30px;
    height: 30px;
    border-radius: var(--radius-full);
    background: var(--gradient-cosmic);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
    transition: var(--transition-normal);
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer-inner {
    padding: 0 var(--space-md) var(--space-md);
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ==========================================
   Contact Form
   ========================================== */
.contact-section {
    padding: var(--space-xl) 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--space-lg);
}

.contact-info {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
}

.contact-info-item {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.contact-info-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-cosmic);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    flex-shrink: 0;
}

.contact-info-text h4 {
    font-size: 1rem;
    margin-bottom: 4px;
}

.contact-info-text p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin: 0;
}

.contact-form {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
}

.form-group {
    margin-bottom: var(--space-md);
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.form-input,
.form-textarea {
    width: 100%;
    padding: 15px 20px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1rem;
    transition: var(--transition-normal);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.2);
}

.form-textarea {
    min-height: 150px;
    resize: vertical;
}

/* ==========================================
   Footer
   ========================================== */
.site-footer {
    background: linear-gradient(180deg, var(--bg-dark) 0%, #050510 100%);
    padding: var(--space-xl) 0 var(--space-md);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.footer-brand {
    max-width: 300px;
}

.footer-brand .logo {
    margin-bottom: var(--space-sm);
}

.footer-brand p {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.footer-title {
    font-size: 1.1rem;
    margin-bottom: var(--space-md);
    color: var(--text-primary);
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 0.95rem;
    transition: var(--transition-normal);
}

.footer-links a:hover {
    color: var(--primary-light);
    padding-left: 5px;
}

.footer-social {
    display: flex;
    gap: var(--space-sm);
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: var(--bg-card);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: var(--transition-normal);
}

.footer-social a:hover {
    background: var(--gradient-cosmic);
    transform: translateY(-3px);
}

.footer-bottom {
    padding-top: var(--space-md);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.footer-copyright {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-legal {
    display: flex;
    gap: var(--space-md);
}

.footer-legal a {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-legal a:hover {
    color: var(--primary-light);
}

/* Company Info Box */
.footer-company-info {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    margin-top: var(--space-md);
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.8;
}

/* ==========================================
   Blog Section
   ========================================== */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-md);
}

.blog-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition-normal);
}

.blog-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.blog-card-image {
    height: 200px;
    background: var(--gradient-cosmic);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.blog-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.blog-card:hover .blog-card-image img {
    transform: scale(1.05);
}

.blog-card-body {
    padding: var(--space-md);
}

.blog-card-meta {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-xs);
    font-size: 0.85rem;
    color: var(--text-muted);
}

.blog-card-meta span {
    padding: 4px 10px;
    background: rgba(102, 126, 234, 0.2);
    border-radius: 4px;
    color: var(--primary-light);
}

.blog-card-title {
    font-size: 1.2rem;
    margin-bottom: var(--space-xs);
}

.blog-card-title a:hover {
    color: var(--primary-light);
}

.blog-card-excerpt {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: var(--space-sm);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.blog-card-link {
    color: var(--primary-light);
    font-weight: 500;
    font-size: 0.95rem;
}

.blog-card-link:hover {
    color: var(--accent);
}

/* ==========================================
   Portfolio Section
   ========================================== */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-md);
}

.portfolio-item {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    aspect-ratio: 16/10;
}

.portfolio-item-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.portfolio-item-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(10, 10, 26, 0.9), transparent);
    opacity: 0;
    transition: var(--transition-normal);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: var(--space-md);
}

.portfolio-item:hover .portfolio-item-overlay {
    opacity: 1;
}

.portfolio-item:hover .portfolio-item-image {
    transform: scale(1.1);
}

.portfolio-item-title {
    font-size: 1.3rem;
    margin-bottom: var(--space-xs);
}

.portfolio-item-category {
    color: var(--primary-light);
    font-size: 0.9rem;
}

/* ==========================================
   Pricing Section
   ========================================== */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-md);
    align-items: stretch;
}

.pricing-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    text-align: center;
    position: relative;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition-normal);
}

.pricing-card.featured {
    border-color: var(--primary);
    transform: scale(1.05);
}

.pricing-card.featured::before {
    content: '추천';
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-cosmic);
    padding: 5px 20px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.pricing-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-glow);
}

.pricing-card.featured:hover {
    transform: scale(1.05) translateY(-10px);
}

.pricing-name {
    font-size: 1.3rem;
    margin-bottom: var(--space-sm);
}

.pricing-price {
    font-size: 3rem;
    font-weight: 800;
    background: var(--gradient-cosmic);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-sm);
}

.pricing-price span {
    font-size: 1rem;
    font-weight: 400;
}

.pricing-description {
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
}

.pricing-features {
    text-align: left;
    margin-bottom: var(--space-md);
}

.pricing-features li {
    padding: 10px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.pricing-features li::before {
    content: '✓';
    color: var(--primary-light);
    font-weight: bold;
}

/* ==========================================
   Location/Map Section
   ========================================== */
.location-section {
    padding: var(--space-xl) 0;
}

.location-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
}

.location-map {
    border-radius: var(--radius-lg);
    overflow: hidden;
    min-height: 400px;
}

.location-map iframe {
    width: 100%;
    height: 100%;
    min-height: 400px;
    border: 0;
}

.location-info {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
}

.location-detail {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.location-icon {
    width: 45px;
    height: 45px;
    background: var(--gradient-cosmic);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

/* ==========================================
   News / Notice Section
   ========================================== */
.news-list {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.news-item {
    display: flex;
    align-items: center;
    padding: var(--space-md);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition-normal);
}

.news-item:last-child {
    border-bottom: none;
}

.news-item:hover {
    background: var(--bg-card-hover);
}

.news-category {
    padding: 5px 12px;
    background: rgba(102, 126, 234, 0.2);
    border-radius: 4px;
    font-size: 0.8rem;
    color: var(--primary-light);
    margin-right: var(--space-sm);
    white-space: nowrap;
}

.news-title {
    flex: 1;
    font-weight: 500;
}

.news-date {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-left: var(--space-sm);
}

/* ==========================================
   Careers Section
   ========================================== */
.careers-grid {
    display: grid;
    gap: var(--space-md);
}

.career-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-sm);
    transition: var(--transition-normal);
}

.career-card:hover {
    background: var(--bg-card-hover);
    transform: translateX(10px);
}

.career-info h3 {
    font-size: 1.2rem;
    margin-bottom: var(--space-xs);
}

.career-meta {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.career-tag {
    padding: 4px 12px;
    background: rgba(102, 126, 234, 0.2);
    border-radius: 4px;
    font-size: 0.85rem;
    color: var(--primary-light);
}

/* ==========================================
   Utility Classes
   ========================================== */
.mt-1 { margin-top: var(--space-xs); }
.mt-2 { margin-top: var(--space-sm); }
.mt-3 { margin-top: var(--space-md); }
.mt-4 { margin-top: var(--space-lg); }
.mt-5 { margin-top: var(--space-xl); }

.mb-1 { margin-bottom: var(--space-xs); }
.mb-2 { margin-bottom: var(--space-sm); }
.mb-3 { margin-bottom: var(--space-md); }
.mb-4 { margin-bottom: var(--space-lg); }
.mb-5 { margin-bottom: var(--space-xl); }

.pt-1 { padding-top: var(--space-xs); }
.pt-2 { padding-top: var(--space-sm); }
.pt-3 { padding-top: var(--space-md); }
.pt-4 { padding-top: var(--space-lg); }
.pt-5 { padding-top: var(--space-xl); }

.pb-1 { padding-bottom: var(--space-xs); }
.pb-2 { padding-bottom: var(--space-sm); }
.pb-3 { padding-bottom: var(--space-md); }
.pb-4 { padding-bottom: var(--space-lg); }
.pb-5 { padding-bottom: var(--space-xl); }

.d-flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.align-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: var(--space-xs); }
.gap-2 { gap: var(--space-sm); }
.gap-3 { gap: var(--space-md); }

/* Grid System */
.grid {
    display: grid;
    gap: var(--space-md);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* Reveal Animations */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal.from-left {
    transform: translateX(-50px);
}

.reveal.from-left.visible {
    transform: translateX(0);
}

.reveal.from-right {
    transform: translateX(50px);
}

.reveal.from-right.visible {
    transform: translateX(0);
}

/* Stagger Animation */
.stagger-item {
    transition-delay: calc(var(--stagger-index, 0) * 0.1s);
}

/* ==========================================
   Blog Post Page
   ========================================== */
.blog-card-content {
    padding: var(--space-md);
}

.blog-meta {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
    margin-bottom: var(--space-sm);
    font-size: 0.85rem;
}

.blog-category {
    padding: 4px 12px;
    background: rgba(102, 126, 234, 0.2);
    border-radius: 4px;
    color: var(--primary-light);
}

.blog-date,
.blog-read-time {
    color: var(--text-muted);
}

.blog-card-title {
    font-size: 1.2rem;
    line-height: 1.4;
    margin-bottom: var(--space-xs);
}

.blog-card-title a:hover {
    color: var(--primary-light);
}

.blog-card-excerpt {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: var(--space-sm);
}

.blog-placeholder-image {
    width: 100%;
    height: 200px;
    background: var(--gradient-cosmic);
    display: flex;
    align-items: center;
    justify-content: center;
}

.blog-post-header {
    text-align: center;
    margin-bottom: var(--space-lg);
}

.blog-post-content {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--space-lg);
    background: var(--bg-card);
    border-radius: var(--radius-lg);
}

.blog-post-content h2 {
    font-size: 1.5rem;
    margin: var(--space-lg) 0 var(--space-sm);
    color: var(--text-primary);
}

.blog-post-content h3 {
    font-size: 1.25rem;
    margin: var(--space-md) 0 var(--space-xs);
    color: var(--primary-light);
}

.blog-post-content p {
    margin-bottom: var(--space-sm);
    line-height: 1.9;
}

.blog-post-content ul,
.blog-post-content ol {
    margin: var(--space-sm) 0;
    padding-left: var(--space-md);
}

.blog-post-content li {
    margin-bottom: var(--space-xs);
    color: var(--text-secondary);
    line-height: 1.8;
}

.blog-post-content ul li::before {
    content: '•';
    color: var(--primary-light);
    margin-right: var(--space-xs);
}

.blog-post-content strong {
    color: var(--text-primary);
}

.blog-share {
    text-align: center;
    padding: var(--space-lg) 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: var(--space-lg);
}

.blog-share-buttons {
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.blog-navigation {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

.blog-nav-link {
    background: var(--bg-card);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    transition: var(--transition-normal);
}

.blog-nav-link:hover {
    background: var(--bg-card-hover);
}

.blog-nav-link.next {
    text-align: right;
}

.nav-label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: var(--space-xs);
}

.nav-title {
    display: block;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.95rem;
    line-height: 1.4;
}

/* ==========================================
   Legal Pages (Privacy & Terms)
   ========================================== */
.legal-content {
    max-width: 900px;
    margin: 0 auto;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
}

.legal-updated {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-sm);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.legal-section {
    margin-bottom: var(--space-lg);
}

.legal-section h2 {
    font-size: 1.3rem;
    color: var(--primary-light);
    margin-bottom: var(--space-sm);
}

.legal-section p {
    line-height: 1.9;
    margin-bottom: var(--space-sm);
}

.legal-section ol,
.legal-section ul {
    padding-left: var(--space-md);
    margin-bottom: var(--space-sm);
}

.legal-section li {
    margin-bottom: var(--space-xs);
    color: var(--text-secondary);
    line-height: 1.8;
}

.legal-section ol li {
    list-style: decimal;
}

.legal-section ul li {
    list-style: disc;
}

.legal-table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--space-md) 0;
    font-size: 0.9rem;
}

.legal-table th,
.legal-table td {
    padding: var(--space-sm);
    text-align: left;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.legal-table th {
    background: rgba(102, 126, 234, 0.2);
    color: var(--text-primary);
    font-weight: 600;
}

.legal-table td {
    color: var(--text-secondary);
}

.legal-contact {
    background: rgba(102, 126, 234, 0.1);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    margin-top: var(--space-sm);
}

.legal-contact p {
    margin-bottom: var(--space-xs);
}

/* ==========================================
   Sitemap Page
   ========================================== */
.sitemap-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-lg);
}

.sitemap-section {
    background: var(--bg-card);
    padding: var(--space-md);
    border-radius: var(--radius-md);
}

.sitemap-category {
    font-size: 1.1rem;
    color: var(--primary-light);
    margin-bottom: var(--space-sm);
    padding-bottom: var(--space-xs);
    border-bottom: 2px solid rgba(102, 126, 234, 0.3);
}

.sitemap-list li {
    margin-bottom: var(--space-xs);
}

.sitemap-list a {
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    padding: var(--space-xs) 0;
    transition: var(--transition-normal);
}

.sitemap-list a::before {
    content: '→';
    margin-right: var(--space-xs);
    color: var(--primary);
    opacity: 0;
    transform: translateX(-10px);
    transition: var(--transition-normal);
}

.sitemap-list a:hover {
    color: var(--primary-light);
    padding-left: var(--space-xs);
}

.sitemap-list a:hover::before {
    opacity: 1;
    transform: translateX(0);
}

.sitemap-external {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-sm);
}

.external-link {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-sm);
    background: rgba(102, 126, 234, 0.1);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    transition: var(--transition-normal);
}

.external-link:hover {
    background: rgba(102, 126, 234, 0.2);
    color: var(--primary-light);
}

.external-link .arrow {
    transition: var(--transition-normal);
}

.external-link:hover .arrow {
    transform: translateX(5px);
}

/* ==========================================
   Sound Tuning Page
   ========================================== */
.frequency-bar {
    height: 30px;
    border-radius: var(--radius-sm);
    margin-top: var(--space-sm);
    position: relative;
    overflow: hidden;
}

.frequency-bar.korean {
    width: 40%;
    background: linear-gradient(90deg, #60a5fa 0%, #3b82f6 100%);
}

.frequency-bar.english {
    width: 80%;
    background: linear-gradient(90deg, #f472b6 0%, #ec4899 100%);
}

.filter-diagram {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
}

.filter-stage {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm);
    background: rgba(102, 126, 234, 0.1);
    border-radius: var(--radius-md);
    width: 100%;
}

.filter-icon {
    font-size: 2rem;
}

.filter-arrow {
    color: var(--primary-light);
    font-size: 1.5rem;
}

.tuning-process {
    display: grid;
    gap: var(--space-md);
}

.process-step {
    display: flex;
    gap: var(--space-md);
    align-items: flex-start;
}

.step-number {
    font-size: 2rem;
    font-weight: 800;
    background: var(--gradient-cosmic);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    flex-shrink: 0;
}

.step-content h4 {
    font-size: 1.1rem;
    margin-bottom: var(--space-xs);
}

.step-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.science-references {
    display: grid;
    gap: var(--space-md);
}

.reference-item {
    padding: var(--space-md);
    background: rgba(102, 126, 234, 0.1);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--primary);
}

.reference-item h4 {
    font-size: 1rem;
    margin-bottom: var(--space-xs);
    color: var(--primary-light);
}

.reference-item p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin: 0;
}

/* ==========================================
   Learning Phases Page
   ========================================== */
.learning-phase {
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.phase-header {
    padding: var(--space-lg);
    text-align: center;
}

.phase-header.phase-1 {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.phase-header.phase-2 {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.phase-header.phase-3 {
    background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
}

.phase-header .phase-number {
    display: inline-block;
    padding: 5px 15px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.phase-header h2 {
    font-size: 1.8rem;
    margin-bottom: var(--space-xs);
    color: white;
}

.phase-header p {
    color: rgba(255, 255, 255, 0.9);
    margin: 0;
}

.phase-content {
    padding: var(--space-lg);
    background: var(--bg-card);
}

.phase-content h3 {
    font-size: 1.1rem;
    margin-bottom: var(--space-sm);
    color: var(--primary-light);
}

.phase-list {
    margin-bottom: var(--space-md);
}

.phase-list li {
    padding: var(--space-xs) 0;
    color: var(--text-secondary);
    display: flex;
    align-items: flex-start;
    gap: var(--space-xs);
}

.phase-list li::before {
    content: '✓';
    color: var(--primary-light);
    flex-shrink: 0;
}

.effect-cards {
    display: grid;
    gap: var(--space-sm);
}

.effect-card {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm);
    background: rgba(102, 126, 234, 0.1);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
}

.effect-icon {
    font-size: 1.5rem;
}

.sound-block-examples {
    display: grid;
    gap: var(--space-sm);
}

.block-example {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm);
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius-sm);
    font-family: monospace;
}

.block-example .original {
    color: var(--text-muted);
}

.block-example .arrow {
    color: var(--primary);
}

.block-example .blocked {
    color: var(--primary-light);
    font-weight: 600;
}

.timeline {
    position: relative;
    padding-left: var(--space-lg);
}

.timeline::before {
    content: '';
    position: absolute;
    left: 10px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--gradient-cosmic);
}

.timeline-item {
    position: relative;
    padding-bottom: var(--space-md);
}

.timeline-marker {
    position: absolute;
    left: calc(-1 * var(--space-lg) - 5px);
    width: 30px;
    height: 30px;
    background: var(--primary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    font-weight: 600;
}

.timeline-content {
    background: var(--bg-card);
    padding: var(--space-sm);
    border-radius: var(--radius-sm);
}

.timeline-content strong {
    display: block;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.timeline-content p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin: 0;
}

.schedule-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-md);
}

.schedule-item {
    display: flex;
    gap: var(--space-sm);
    align-items: flex-start;
}

.schedule-time {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-light);
    flex-shrink: 0;
}

.schedule-content strong {
    display: block;
    margin-bottom: 4px;
}

.schedule-content p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin: 0;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
    flex-wrap: wrap;
}