/* WhiteLine Pro - Global Styles */
/* 대기업 스타일 디자인 시스템 */

:root {
    /* Colors */
    --white: #fbfbfd;
    --black: #1d1d1f;
    --gray-50: #fafafa;
    --gray-100: #f5f5f7;
    --gray-200: #e8e8ed;
    --gray-300: #d2d2d7;
    --gray-400: #86868b;
    --gray-500: #6e6e73;
    --gray-600: #424245;
    --gray-700: #333336;
    --gray-800: #1d1d1f;
    
    --blue: #0071e3;
    --blue-hover: #0077ed;
    --blue-light: #e1f0ff;
    --pink: #e91e63;
    --green: #34c759;
    --orange: #ff9500;
    --red: #ff3b30;
    
    /* Gradients */
    --gradient-hero: linear-gradient(180deg, #1d1d1f 0%, #2d3a4a 100%);
    --gradient-card: linear-gradient(145deg, #2a2a2d 0%, #1a1a1c 100%);
    --gradient-blue: linear-gradient(135deg, #0071e3 0%, #00b4d8 100%);
    --gradient-premium: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    
    /* Typography */
    --font-primary: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Spacing */
    --section-padding: 100px 24px;
    --container-max: 1200px;
    --container-narrow: 800px;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.1);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.15);
    --shadow-xl: 0 20px 60px rgba(0,0,0,0.2);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
}

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

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

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

/* Typography Classes */
.text-xs { font-size: 12px; }
.text-sm { font-size: 14px; }
.text-base { font-size: 16px; }
.text-lg { font-size: 18px; }
.text-xl { font-size: 20px; }
.text-2xl { font-size: 24px; }
.text-3xl { font-size: 32px; }
.text-4xl { font-size: 40px; }
.text-5xl { font-size: 48px; }

.font-light { font-weight: 300; }
.font-normal { font-weight: 400; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

/* Container */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

.container-narrow {
    max-width: var(--container-narrow);
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== NAVIGATION ===== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 52px;
    background: rgba(29, 29, 31, 0.92);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    z-index: 1000;
    transition: background var(--transition-normal);
}

.nav-container {
    max-width: var(--container-max);
    height: 100%;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-size: 20px;
    font-weight: 700;
    color: var(--white);
    letter-spacing: -0.5px;
}

.nav-logo span {
    color: var(--pink);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 32px;
    list-style: none;
}

.nav-link {
    color: rgba(255, 255, 255, 0.8);
    font-size: 13px;
    font-weight: 400;
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link:hover {
    color: var(--white);
}

.nav-link.has-dropdown::after {
    content: '▾';
    margin-left: 4px;
    font-size: 10px;
}

.nav-dropdown {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: 16px 0;
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
}

.nav-link:hover .nav-dropdown {
    opacity: 1;
    visibility: visible;
}

.nav-dropdown a {
    display: block;
    padding: 10px 24px;
    color: var(--gray-600);
    font-size: 14px;
    transition: all var(--transition-fast);
}

.nav-dropdown a:hover {
    background: var(--gray-100);
    color: var(--blue);
}

.nav-cta {
    background: var(--blue);
    color: var(--white);
    padding: 8px 16px;
    border-radius: var(--radius-full);
    font-size: 13px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all var(--transition-normal);
}

.nav-cta:hover {
    background: var(--blue-hover);
    transform: scale(1.02);
}

.nav-cta-phone {
    font-size: 11px;
    opacity: 0.8;
    border-left: 1px solid rgba(255,255,255,0.3);
    padding-left: 8px;
}

/* Mobile Menu */
.nav-mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--white);
    font-size: 24px;
    cursor: pointer;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: var(--radius-full);
    font-size: 17px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-normal);
    border: none;
    text-decoration: none;
}

.btn-primary {
    background: var(--blue);
    color: var(--white);
}

.btn-primary:hover {
    background: var(--blue-hover);
    transform: scale(1.02);
}

.btn-secondary {
    background: transparent;
    color: var(--blue);
}

.btn-secondary::after {
    content: '›';
    font-size: 20px;
    transition: transform var(--transition-fast);
}

.btn-secondary:hover::after {
    transform: translateX(4px);
}

.btn-white {
    background: var(--white);
    color: var(--black);
}

.btn-white:hover {
    background: var(--gray-100);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--gray-300);
    color: var(--black);
}

.btn-outline:hover {
    border-color: var(--black);
}

.btn-sm {
    padding: 10px 20px;
    font-size: 14px;
}

.btn-lg {
    padding: 18px 36px;
    font-size: 18px;
}

/* ===== HERO SECTION ===== */
.hero {
    min-height: 100vh;
    background: var(--gradient-hero);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 120px 24px 80px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at 50% 0%, rgba(0, 113, 227, 0.15) 0%, transparent 60%);
    pointer-events: none;
}

.hero-brand {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
    font-weight: 400;
    letter-spacing: 8px;
    text-transform: uppercase;
    margin-bottom: 8px;
}

.hero-overline {
    font-size: 17px;
    color: var(--pink);
    font-weight: 600;
    letter-spacing: -0.3px;
    margin-bottom: 12px;
}

.hero-title {
    font-size: clamp(44px, 8vw, 80px);
    font-weight: 700;
    color: var(--white);
    line-height: 1.05;
    letter-spacing: -0.03em;
    margin-bottom: 20px;
}

.hero-subtitle {
    font-size: clamp(18px, 3vw, 24px);
    color: var(--gray-400);
    font-weight: 400;
    max-width: 600px;
    margin-bottom: 36px;
    line-height: 1.5;
}

.hero-cta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    justify-content: center;
}

.hero-badges {
    display: flex;
    gap: 16px;
    margin-top: 60px;
    flex-wrap: wrap;
    justify-content: center;
}

.hero-badge {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.hero-badge-icon {
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
}

.hero-badge-text {
    font-size: 10px;
    color: var(--gray-400);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ===== SECTION ===== */
.section {
    padding: var(--section-padding);
}

.section-dark {
    background: var(--black);
    color: var(--white);
}

.section-light {
    background: var(--gray-100);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-overline {
    font-size: 14px;
    color: var(--pink);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(32px, 5vw, 56px);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.1;
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: clamp(17px, 2vw, 21px);
    color: var(--gray-500);
    max-width: 600px;
    margin: 0 auto;
}

.section-dark .section-subtitle {
    color: var(--gray-400);
}

/* ===== CARDS ===== */
.card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
}

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

.card-dark {
    background: var(--gradient-card);
}

.card-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.card-content {
    padding: 24px;
}

.card-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 8px;
}

.card-desc {
    font-size: 14px;
    color: var(--gray-500);
    line-height: 1.6;
}

/* ===== SERVICE GRID ===== */
.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

.service-card {
    background: var(--gray-100);
    border-radius: var(--radius-lg);
    padding: 40px 24px;
    text-align: center;
    transition: all var(--transition-normal);
    cursor: pointer;
}

.service-card:hover {
    background: var(--black);
    transform: scale(1.02);
}

.service-card:hover .service-name,
.service-card:hover .service-desc {
    color: var(--white);
}

.service-card:hover .service-desc {
    color: var(--gray-400);
}

.service-icon {
    font-size: 48px;
    margin-bottom: 16px;
    display: block;
}

.service-icon-img {
    width: 56px;
    height: 56px;
    object-fit: contain;
    margin-bottom: 16px;
}

.service-name {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 8px;
    transition: color var(--transition-normal);
}

.service-desc {
    font-size: 14px;
    color: var(--gray-500);
    margin-bottom: 16px;
    transition: color var(--transition-normal);
}

.service-link {
    color: var(--blue);
    font-size: 14px;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.service-link::after {
    content: '›';
    font-size: 16px;
}

/* ===== MEDIA GRID ===== */
.media-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.media-card {
    background: var(--gradient-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.media-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.media-card-image {
    position: relative;
    width: 100%;
    height: 180px;
    overflow: hidden;
}

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

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

.media-card-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 700;
    color: var(--white);
}

.badge-mbc { background: linear-gradient(135deg, #0066cc, #00aaff); }
.badge-kbs { background: linear-gradient(135deg, #1a65ff, #4d8aff); }
.badge-news { background: linear-gradient(135deg, #ff6b00, #ff9500); }
.badge-youtube { background: #ff0000; }

.media-card-content {
    padding: 20px;
}

.media-card-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 8px;
}

.media-card-desc {
    font-size: 13px;
    color: var(--gray-400);
    line-height: 1.5;
}

/* ===== PROCESS ===== */
.process-list {
    max-width: var(--container-narrow);
    margin: 0 auto;
}

.process-item {
    display: flex;
    align-items: flex-start;
    gap: 32px;
    margin-bottom: 48px;
}

.process-number {
    flex-shrink: 0;
    width: 64px;
    height: 64px;
    background: var(--black);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
}

.process-content {
    flex: 1;
}

.process-title {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 8px;
}

.process-desc {
    font-size: 16px;
    color: var(--gray-500);
    line-height: 1.6;
}

/* ===== STATS ===== */
.stats-grid {
    display: flex;
    justify-content: center;
    gap: 60px;
    flex-wrap: wrap;
}

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

.stat-number {
    font-size: 56px;
    font-weight: 700;
    line-height: 1;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 14px;
    color: var(--gray-400);
}

/* ===== CONTACT ===== */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 24px;
    max-width: var(--container-narrow);
    margin: 0 auto;
}

.contact-card {
    padding: 32px 24px;
    background: var(--gray-100);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all var(--transition-normal);
}

.contact-card:hover {
    background: var(--black);
    color: var(--white);
}

.contact-card:hover .contact-label {
    color: var(--gray-400);
}

.contact-icon {
    font-size: 32px;
    margin-bottom: 12px;
}

.contact-label {
    font-size: 13px;
    color: var(--gray-500);
    margin-bottom: 8px;
    transition: color var(--transition-normal);
}

.contact-value {
    font-size: 18px;
    font-weight: 600;
}

/* ===== FOOTER ===== */
.footer {
    background: var(--gray-100);
    padding: 60px 24px 40px;
    border-top: 1px solid var(--gray-200);
}

.footer-content {
    max-width: var(--container-max);
    margin: 0 auto;
}

.footer-top {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-brand {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 16px;
}

.footer-brand span {
    color: var(--pink);
}

.footer-desc {
    font-size: 14px;
    color: var(--gray-500);
    line-height: 1.8;
}

.footer-title {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--gray-600);
}

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

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    font-size: 14px;
    color: var(--gray-500);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    padding-top: 24px;
    border-top: 1px solid var(--gray-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-copyright {
    font-size: 12px;
    color: var(--gray-400);
}

.footer-legal {
    display: flex;
    gap: 24px;
}

.footer-legal a {
    font-size: 12px;
    color: var(--gray-500);
}

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

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.animate-hero {
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
}

.animate-delay-1 { animation-delay: 0.1s; }
.animate-delay-2 { animation-delay: 0.2s; }
.animate-delay-3 { animation-delay: 0.3s; }
.animate-delay-4 { animation-delay: 0.4s; }
.animate-delay-5 { animation-delay: 0.5s; }
.animate-delay-6 { animation-delay: 0.6s; }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .footer-top {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .nav-mobile-toggle {
        display: block;
    }
    
    .media-grid {
        grid-template-columns: 1fr;
    }
    
    .process-item {
        flex-direction: column;
        text-align: center;
        gap: 20px;
    }
    
    .stats-grid {
        gap: 32px;
    }
    
    .stat-number {
        font-size: 40px;
    }
    
    .footer-top {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

/* ===== SERVICE PAGE STYLES ===== */
.service-hero {
    min-height: 60vh;
    background: var(--gradient-hero);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 140px 24px 80px;
    position: relative;
}

.service-hero-icon {
    font-size: 80px;
    margin-bottom: 24px;
}

.service-hero-icon img {
    width: 100px;
    height: 100px;
    object-fit: contain;
}

.service-hero-title {
    font-size: clamp(36px, 6vw, 56px);
    font-weight: 700;
    color: var(--white);
    margin-bottom: 16px;
}

.service-hero-subtitle {
    font-size: 20px;
    color: var(--gray-400);
    max-width: 600px;
}

.service-content {
    padding: 80px 24px;
}

.service-intro {
    max-width: var(--container-narrow);
    margin: 0 auto 60px;
    text-align: center;
}

.service-intro h2 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 20px;
}

.service-intro p {
    font-size: 18px;
    color: var(--gray-500);
    line-height: 1.8;
}

.service-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    max-width: var(--container-max);
    margin: 0 auto;
}

.feature-card {
    background: var(--gray-100);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
}

.feature-icon {
    font-size: 40px;
    margin-bottom: 20px;
}

.feature-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
}

.feature-desc {
    font-size: 15px;
    color: var(--gray-500);
    line-height: 1.7;
}

.service-cta {
    text-align: center;
    padding: 80px 24px;
    background: var(--black);
    color: var(--white);
}

.service-cta h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 16px;
}

.service-cta p {
    font-size: 18px;
    color: var(--gray-400);
    margin-bottom: 32px;
}

/* ===== BREADCRUMB ===== */
.breadcrumb {
    padding: 16px 24px;
    background: var(--gray-100);
    font-size: 13px;
}

.breadcrumb-container {
    max-width: var(--container-max);
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 8px;
}

.breadcrumb a {
    color: var(--gray-500);
}

.breadcrumb a:hover {
    color: var(--blue);
}

.breadcrumb span {
    color: var(--gray-400);
}

.breadcrumb-current {
    color: var(--black);
    font-weight: 500;
}

/* ===== FAQ ===== */
.faq-list {
    max-width: var(--container-narrow);
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid var(--gray-200);
}

.faq-question {
    width: 100%;
    padding: 24px 0;
    background: none;
    border: none;
    text-align: left;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-question::after {
    content: '+';
    font-size: 24px;
    color: var(--gray-400);
}

.faq-question.active::after {
    content: '−';
}

.faq-answer {
    padding: 0 0 24px;
    font-size: 16px;
    color: var(--gray-500);
    line-height: 1.8;
    display: none;
}

.faq-answer.active {
    display: block;
}