/* ============================================
   영어회화 어플추천 - hi.soritune.com
   Main Stylesheet - Cosmic Theme
   ============================================ */

/* CSS Variables */
:root {
    /* Primary Colors - Cosmic Theme */
    --primary: #667eea;
    --primary-dark: #5a67d8;
    --primary-light: #7c8ff2;
    --secondary: #764ba2;
    --secondary-dark: #6b4190;
    --accent: #f093fb;
    --accent-light: #f5a3fc;

    /* Gradient Colors */
    --gradient-cosmic: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-cosmic-reverse: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
    --gradient-warm: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-dark: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    --gradient-glass: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.05) 100%);

    /* Background Colors */
    --bg-dark: #0f0f1a;
    --bg-darker: #0a0a12;
    --bg-card: rgba(26, 26, 46, 0.8);
    --bg-glass: rgba(255, 255, 255, 0.05);

    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.5);
    --text-dark: #1a1a2e;

    /* VAK Colors */
    --vak-visual: #667eea;
    --vak-auditory: #f093fb;
    --vak-kinesthetic: #4fd1c5;

    /* Status Colors */
    --success: #48bb78;
    --warning: #ed8936;
    --error: #f56565;
    --info: #4299e1;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.6);
    --shadow-cosmic: 0 10px 40px rgba(102, 126, 234, 0.3);
    --shadow-glow: 0 0 30px rgba(102, 126, 234, 0.4);

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Typography */
    --font-primary: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Poppins', var(--font-primary);

    /* Container */
    --container-max: 1200px;
    --container-padding: 1rem;
}

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

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

body {
    font-family: var(--font-primary);
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Background Effect */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(ellipse at 20% 20%, rgba(102, 126, 234, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(118, 75, 162, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(240, 147, 251, 0.05) 0%, transparent 70%);
    pointer-events: none;
    z-index: -1;
}

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

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.75rem); }
h4 { font-size: clamp(1.1rem, 2.5vw, 1.25rem); }
h5 { font-size: 1.1rem; }
h6 { font-size: 1rem; }

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

a {
    color: var(--primary-light);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--accent);
}

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

/* Container */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.container-fluid {
    width: 100%;
    padding: 0 var(--container-padding);
}

/* Section */
.section {
    padding: var(--space-3xl) 0;
}

.section-title {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.section-title h2 {
    background: var(--gradient-cosmic);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-title p {
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================
   Header & Navigation
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: var(--space-md) 0;
    transition: all var(--transition-normal);
}

.header.scrolled {
    background: rgba(15, 15, 26, 0.95);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-lg);
    padding: var(--space-sm) 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.logo img {
    height: 40px;
    width: auto;
}

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

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

.nav-desktop ul {
    display: flex;
    gap: var(--space-lg);
    list-style: none;
}

.nav-desktop a {
    color: var(--text-secondary);
    font-weight: 500;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    position: relative;
}

.nav-desktop a:hover,
.nav-desktop a.active {
    color: var(--text-primary);
    background: var(--bg-glass);
}

.nav-desktop a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--gradient-cosmic);
    transition: width var(--transition-fast);
}

.nav-desktop a:hover::after,
.nav-desktop a.active::after {
    width: 80%;
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-sm);
}

.menu-toggle span {
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition-fast);
}

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

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

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

/* Mobile Navigation */
.nav-mobile {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 320px;
    height: 100vh;
    background: var(--bg-darker);
    padding: var(--space-3xl) var(--space-xl);
    transition: right var(--transition-normal);
    z-index: 999;
    overflow-y: auto;
}

.nav-mobile.active {
    right: 0;
}

.nav-mobile ul {
    list-style: none;
}

.nav-mobile li {
    margin-bottom: var(--space-md);
}

.nav-mobile a {
    display: block;
    color: var(--text-secondary);
    font-size: 1.1rem;
    padding: var(--space-sm) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--transition-fast);
}

.nav-mobile a:hover,
.nav-mobile a.active {
    color: var(--primary-light);
    padding-left: var(--space-sm);
}

.nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: 998;
}

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

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-normal);
    text-decoration: none;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

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

.btn-secondary:hover {
    background: var(--primary);
    color: var(--text-primary);
}

.btn-ghost {
    background: var(--bg-glass);
    color: var(--text-primary);
    backdrop-filter: blur(10px);
}

.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.15);
}

.btn-lg {
    padding: var(--space-lg) var(--space-2xl);
    font-size: 1.1rem;
}

.btn-sm {
    padding: var(--space-sm) var(--space-md);
    font-size: 0.875rem;
}

.btn-icon {
    width: 48px;
    height: 48px;
    padding: 0;
    border-radius: var(--radius-full);
}

/* ============================================
   Cards
   ============================================ */
.card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--transition-normal);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(102, 126, 234, 0.3);
}

.card-glass {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
}

.card-gradient {
    background: var(--gradient-cosmic);
    border: none;
}

.card-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-cosmic);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-lg);
    font-size: 1.5rem;
}

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

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

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

.hero-content {
    max-width: 700px;
    text-align: center;
    margin: 0 auto;
}

.hero-badge {
    display: inline-block;
    background: var(--bg-glass);
    backdrop-filter: blur(10px);
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-full);
    margin-bottom: var(--space-lg);
    font-size: 0.875rem;
    color: var(--accent);
    border: 1px solid rgba(240, 147, 251, 0.3);
}

.hero-title {
    margin-bottom: var(--space-lg);
}

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

.hero-description {
    font-size: 1.1rem;
    margin-bottom: var(--space-2xl);
    color: var(--text-secondary);
}

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

.hero-stats {
    display: flex;
    gap: var(--space-2xl);
    justify-content: center;
    margin-top: var(--space-3xl);
}

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

.hero-stat-value {
    font-size: 2rem;
    font-weight: 700;
    background: var(--gradient-cosmic);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Hero Floating Elements */
.hero-float {
    position: absolute;
    border-radius: var(--radius-full);
    opacity: 0.5;
    animation: float 6s ease-in-out infinite;
}

.hero-float-1 {
    width: 300px;
    height: 300px;
    background: var(--gradient-cosmic);
    top: 10%;
    right: -100px;
    filter: blur(80px);
}

.hero-float-2 {
    width: 200px;
    height: 200px;
    background: var(--accent);
    bottom: 20%;
    left: -50px;
    filter: blur(60px);
    animation-delay: -2s;
}

.hero-float-3 {
    width: 150px;
    height: 150px;
    background: var(--vak-kinesthetic);
    top: 40%;
    right: 10%;
    filter: blur(40px);
    animation-delay: -4s;
}

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

/* ============================================
   Slider/Carousel
   ============================================ */
.slider-container {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-xl);
}

.slider-track {
    display: flex;
    transition: transform 0.5s ease;
}

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

.slider-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    background: var(--bg-glass);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    color: var(--text-primary);
    z-index: 10;
}

.slider-nav:hover {
    background: var(--primary);
    border-color: var(--primary);
}

.slider-prev {
    left: var(--space-md);
}

.slider-next {
    right: var(--space-md);
}

.slider-dots {
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
    margin-top: var(--space-lg);
}

.slider-dot {
    width: 10px;
    height: 10px;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.slider-dot.active {
    width: 30px;
    background: var(--gradient-cosmic);
}

/* ============================================
   VAK Test Styles
   ============================================ */
.vak-test-container {
    max-width: 800px;
    margin: 0 auto;
}

.vak-progress {
    background: rgba(255, 255, 255, 0.1);
    height: 8px;
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: var(--space-xl);
}

.vak-progress-bar {
    height: 100%;
    background: var(--gradient-cosmic);
    transition: width var(--transition-normal);
}

.vak-question-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    margin-bottom: var(--space-xl);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.vak-question-number {
    font-size: 0.875rem;
    color: var(--primary-light);
    margin-bottom: var(--space-sm);
}

.vak-question-text {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-xl);
}

.vak-options {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.vak-option {
    display: flex;
    align-items: center;
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-glass);
    border: 2px solid transparent;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.vak-option:hover {
    background: rgba(102, 126, 234, 0.1);
    border-color: rgba(102, 126, 234, 0.3);
}

.vak-option.selected {
    background: rgba(102, 126, 234, 0.2);
    border-color: var(--primary);
}

.vak-option input {
    display: none;
}

.vak-option-circle {
    width: 24px;
    height: 24px;
    border: 2px solid var(--text-muted);
    border-radius: var(--radius-full);
    margin-right: var(--space-md);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.vak-option.selected .vak-option-circle {
    border-color: var(--primary);
    background: var(--primary);
}

.vak-option.selected .vak-option-circle::after {
    content: '';
    width: 10px;
    height: 10px;
    background: var(--text-primary);
    border-radius: var(--radius-full);
}

.vak-option-text {
    font-size: 1rem;
}

/* VAK Result */
.vak-result {
    text-align: center;
}

.vak-result-type {
    display: inline-flex;
    align-items: center;
    gap: var(--space-md);
    background: var(--gradient-cosmic);
    padding: var(--space-md) var(--space-xl);
    border-radius: var(--radius-full);
    margin-bottom: var(--space-xl);
}

.vak-result-type-icon {
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.vak-result-type-name {
    font-size: 1.5rem;
    font-weight: 700;
}

.vak-chart-container {
    max-width: 400px;
    margin: 0 auto var(--space-2xl);
}

.vak-scores {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
    margin-bottom: var(--space-2xl);
}

.vak-score-item {
    background: var(--bg-card);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    text-align: center;
}

.vak-score-label {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: var(--space-sm);
}

.vak-score-value {
    font-size: 2rem;
    font-weight: 700;
}

.vak-score-item.visual .vak-score-value { color: var(--vak-visual); }
.vak-score-item.auditory .vak-score-value { color: var(--vak-auditory); }
.vak-score-item.kinesthetic .vak-score-value { color: var(--vak-kinesthetic); }

/* ============================================
   Roadmap Styles
   ============================================ */
.roadmap-container {
    max-width: 900px;
    margin: 0 auto;
}

.roadmap-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.roadmap-phase {
    position: relative;
    padding-left: 60px;
    padding-bottom: var(--space-2xl);
}

.roadmap-phase::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--primary), var(--secondary));
}

.roadmap-phase:last-child::before {
    display: none;
}

.roadmap-phase-number {
    position: absolute;
    left: 0;
    top: 0;
    width: 42px;
    height: 42px;
    background: var(--gradient-cosmic);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
}

.roadmap-phase-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.roadmap-phase-title {
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
    color: var(--primary-light);
}

.roadmap-phase-period {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: var(--space-md);
}

.roadmap-phase-content {
    color: var(--text-secondary);
}

.roadmap-tasks {
    list-style: none;
    margin-top: var(--space-md);
}

.roadmap-task {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    padding: var(--space-sm) 0;
}

.roadmap-task::before {
    content: '✓';
    color: var(--success);
    font-weight: 700;
}

/* ============================================
   App Features Grid
   ============================================ */
.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
}

.feature-card {
    display: flex;
    gap: var(--space-lg);
    padding: var(--space-xl);
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--transition-normal);
}

.feature-card:hover {
    transform: translateX(5px);
    border-color: rgba(102, 126, 234, 0.3);
}

.feature-icon {
    width: 56px;
    height: 56px;
    min-width: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-cosmic);
    border-radius: var(--radius-lg);
    font-size: 1.5rem;
}

.feature-content h4 {
    margin-bottom: var(--space-sm);
}

.feature-content p {
    color: var(--text-secondary);
    margin-bottom: 0;
    font-size: 0.95rem;
}

/* ============================================
   App List (Recommendation Cards)
   ============================================ */
.app-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
}

.app-card {
    display: flex;
    flex-direction: column;
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--transition-normal);
}

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

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

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

.app-card-body {
    padding: var(--space-xl);
    flex: 1;
}

.app-card-rating {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
}

.app-card-stars {
    color: #ffc107;
}

.app-card-rating span {
    font-size: 0.875rem;
    color: var(--text-muted);
}

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

.app-card-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: var(--space-lg);
}

.app-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.app-tag {
    padding: var(--space-xs) var(--space-sm);
    background: rgba(102, 126, 234, 0.2);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    color: var(--primary-light);
}

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

/* ============================================
   Testimonials
   ============================================ */
.testimonial-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.testimonial-quote {
    font-size: 1.1rem;
    font-style: italic;
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
    position: relative;
    padding-left: var(--space-xl);
}

.testimonial-quote::before {
    content: '"';
    position: absolute;
    left: 0;
    top: -10px;
    font-size: 3rem;
    color: var(--primary);
    opacity: 0.5;
    font-family: serif;
}

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

.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: 700;
}

.testimonial-info h5 {
    margin-bottom: 0;
    font-size: 1rem;
}

.testimonial-info p {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 0;
}

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

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

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-lg);
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
    text-align: left;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.faq-question:hover {
    background: rgba(255, 255, 255, 0.05);
}

.faq-icon {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--transition-fast);
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
}

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

.faq-answer-content {
    padding: 0 var(--space-lg) var(--space-lg);
    color: var(--text-secondary);
}

/* ============================================
   CTA Section
   ============================================ */
.cta-section {
    background: var(--gradient-cosmic);
    border-radius: var(--radius-xl);
    padding: var(--space-3xl) var(--space-xl);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 50%);
    animation: rotate 20s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.cta-content {
    position: relative;
    z-index: 1;
}

.cta-title {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    margin-bottom: var(--space-md);
}

.cta-text {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--space-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

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

.cta-btn-light {
    background: var(--text-primary);
    color: var(--primary);
}

.cta-btn-light:hover {
    background: rgba(255, 255, 255, 0.9);
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--bg-darker);
    padding: var(--space-3xl) 0 var(--space-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

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

.footer-brand p {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-top: var(--space-md);
}

.footer-section h4 {
    font-size: 1rem;
    margin-bottom: var(--space-lg);
    color: var(--text-primary);
}

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

.footer-links li {
    margin-bottom: var(--space-sm);
}

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

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

.footer-contact p {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: var(--space-sm);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.footer-social {
    display: flex;
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

.footer-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-glass);
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.footer-social a:hover {
    background: var(--primary);
    color: var(--text-primary);
}

.footer-bottom {
    padding-top: var(--space-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: 0;
}

.footer-bottom-links {
    display: flex;
    gap: var(--space-lg);
    justify-content: center;
}

.footer-bottom-links a {
    color: var(--text-muted);
    font-size: 0.875rem;
}

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

/* ============================================
   Forms
   ============================================ */
.form-group {
    margin-bottom: var(--space-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--space-sm);
    font-weight: 500;
    color: var(--text-secondary);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-glass);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: all var(--transition-fast);
}

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

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--text-muted);
}

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

/* ============================================
   Blog
   ============================================ */
.blog-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
}

.blog-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--transition-normal);
}

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

.blog-card-image {
    height: 200px;
    background: var(--gradient-cosmic);
    overflow: hidden;
}

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

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

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

.blog-card-meta {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-sm);
    font-size: 0.875rem;
    color: var(--text-muted);
}

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

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

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

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

.blog-card-link {
    font-weight: 600;
    color: var(--primary-light);
}

/* Single Blog Post */
.blog-post {
    max-width: 800px;
    margin: 0 auto;
}

.blog-post-header {
    margin-bottom: var(--space-2xl);
}

.blog-post-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    margin-bottom: var(--space-md);
}

.blog-post-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    color: var(--text-muted);
    font-size: 0.95rem;
}

.blog-post-featured {
    width: 100%;
    border-radius: var(--radius-xl);
    overflow: hidden;
    margin-bottom: var(--space-2xl);
}

.blog-post-featured img {
    width: 100%;
    height: auto;
}

.blog-post-content {
    color: var(--text-secondary);
    line-height: 1.8;
}

.blog-post-content h2,
.blog-post-content h3,
.blog-post-content h4 {
    color: var(--text-primary);
    margin-top: var(--space-2xl);
}

.blog-post-content p {
    margin-bottom: var(--space-lg);
}

.blog-post-content ul,
.blog-post-content ol {
    margin-bottom: var(--space-lg);
    padding-left: var(--space-xl);
}

.blog-post-content li {
    margin-bottom: var(--space-sm);
}

.blog-post-content blockquote {
    border-left: 4px solid var(--primary);
    padding-left: var(--space-lg);
    margin: var(--space-xl) 0;
    font-style: italic;
    color: var(--text-muted);
}

/* ============================================
   Utility Classes
   ============================================ */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--primary) !important; }
.text-secondary { color: var(--text-secondary) !important; }
.text-muted { color: var(--text-muted) !important; }
.text-gradient {
    background: var(--gradient-cosmic);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.bg-gradient { background: var(--gradient-cosmic); }
.bg-dark { background: var(--bg-dark); }
.bg-card { background: var(--bg-card); }
.bg-glass { background: var(--bg-glass); backdrop-filter: blur(20px); }

.mb-0 { margin-bottom: 0 !important; }
.mb-1 { margin-bottom: var(--space-sm) !important; }
.mb-2 { margin-bottom: var(--space-md) !important; }
.mb-3 { margin-bottom: var(--space-lg) !important; }
.mb-4 { margin-bottom: var(--space-xl) !important; }
.mb-5 { margin-bottom: var(--space-2xl) !important; }

.mt-0 { margin-top: 0 !important; }
.mt-1 { margin-top: var(--space-sm) !important; }
.mt-2 { margin-top: var(--space-md) !important; }
.mt-3 { margin-top: var(--space-lg) !important; }
.mt-4 { margin-top: var(--space-xl) !important; }
.mt-5 { margin-top: var(--space-2xl) !important; }

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

.px-1 { padding-left: var(--space-sm); padding-right: var(--space-sm); }
.px-2 { padding-left: var(--space-md); padding-right: var(--space-md); }
.px-3 { padding-left: var(--space-lg); padding-right: var(--space-lg); }
.px-4 { padding-left: var(--space-xl); padding-right: var(--space-xl); }
.px-5 { padding-left: var(--space-2xl); padding-right: var(--space-2xl); }

.d-none { display: none !important; }
.d-block { display: block !important; }
.d-flex { display: flex !important; }
.d-grid { display: grid !important; }

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.gap-1 { gap: var(--space-sm); }
.gap-2 { gap: var(--space-md); }
.gap-3 { gap: var(--space-lg); }
.gap-4 { gap: var(--space-xl); }

.rounded { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-full { border-radius: var(--radius-full); }

.shadow { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-cosmic { box-shadow: var(--shadow-cosmic); }

.overflow-hidden { overflow: hidden; }
.position-relative { position: relative; }

.w-100 { width: 100%; }
.h-100 { height: 100%; }

/* Animations */
.fade-in {
    opacity: 0;
    animation: fadeIn 0.6s ease forwards;
}

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

.slide-up {
    opacity: 0;
    transform: translateY(30px);
    animation: slideUp 0.6s ease forwards;
}

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

.scale-in {
    opacity: 0;
    transform: scale(0.9);
    animation: scaleIn 0.6s ease forwards;
}

@keyframes scaleIn {
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Scroll Reveal */
.reveal {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s ease;
}

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

/* ============================================
   Responsive Styles
   ============================================ */
@media (min-width: 576px) {
    .container {
        padding: 0 var(--space-lg);
    }

    .hero-stats {
        gap: var(--space-3xl);
    }

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

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

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

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

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

    .menu-toggle {
        display: none;
    }

    .hero-content {
        text-align: left;
        max-width: 100%;
    }

    .hero-buttons {
        justify-content: flex-start;
    }

    .hero-stats {
        justify-content: flex-start;
    }

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

    .footer-bottom {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
    }
}

@media (min-width: 992px) {
    :root {
        --container-padding: 2rem;
    }

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

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

    .app-card {
        flex-direction: row;
    }

    .app-card-image {
        width: 200px;
        height: auto;
        min-height: 200px;
    }

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

    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr 1fr;
    }
}

@media (min-width: 1200px) {
    .hero {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: var(--space-3xl);
        align-items: center;
    }

    .hero-content {
        order: 1;
    }

    .hero-visual {
        order: 2;
    }
}

/* Print Styles */
@media print {
    .header,
    .footer,
    .btn,
    .nav-mobile,
    .nav-overlay {
        display: none !important;
    }

    body {
        background: white;
        color: black;
    }

    .card,
    .blog-card,
    .app-card {
        border: 1px solid #ddd;
        box-shadow: none;
    }
}