/* ============================================================
   크라우니시큐리티 — 메인 스타일시트
   드림시큐리티 참고: 네이비+다크톤, 신뢰감, 전문성
   ============================================================ */

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

:root {
    --navy-deep: #0a0e27;
    --navy-mid: #121938;
    --navy-light: #1a2350;
    --accent-cyan: #00d4ff;
    --accent-blue: #3b82f6;
    --accent-purple: #7c3aed;
    --accent-green: #10b981;
    --text-white: #f1f5f9;
    --text-gray: #94a3b8;
    --text-dim: #64748b;
    --border-color: rgba(255,255,255,0.08);
    --glass-bg: rgba(255,255,255,0.03);
    --gradient-main: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue), var(--accent-purple));
    --gradient-card: linear-gradient(145deg, rgba(26,35,80,0.6), rgba(10,14,39,0.8));
    --shadow-glow: 0 0 30px rgba(0,212,255,0.15);
    --radius: 12px;
    --radius-lg: 20px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html { scroll-behavior: smooth; }

body {
    font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--navy-deep);
    color: var(--text-white);
    line-height: 1.7;
    overflow-x: hidden;
}

a { color: var(--accent-cyan); text-decoration: none; transition: var(--transition); }
a:hover { color: #fff; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* --- Header / Navigation --- */
.header {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    background: rgba(10,14,39,0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}

.header.scrolled { background: rgba(10,14,39,0.95); }

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

.logo {
    display: flex; align-items: center; gap: 10px;
    font-size: 1.4rem; font-weight: 800; letter-spacing: -0.5px;
}

.logo .shield {
    width: 36px; height: 36px;
    background: var(--gradient-main);
    border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.2rem;
}

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

.nav-links { display: flex; gap: 32px; list-style: none; }
.nav-links li a {
    color: var(--text-gray); font-size: 0.95rem; font-weight: 500;
    padding: 8px 0; position: relative;
}
.nav-links li a:hover { color: var(--text-white); }
.nav-links li a::after {
    content: ''; position: absolute; bottom: 0; left: 0;
    width: 0; height: 2px; background: var(--accent-cyan);
    transition: var(--transition);
}
.nav-links li a:hover::after { width: 100%; }

.nav-cta {
    padding: 10px 24px; border-radius: 8px; font-weight: 600;
    background: var(--gradient-main); color: #fff !important;
    font-size: 0.9rem; border: none; cursor: pointer;
}
.nav-cta:hover { opacity: 0.9; transform: translateY(-1px); }

/* Mobile menu */
.menu-toggle { display: none; background: none; border: none; color: white; font-size: 1.5rem; cursor: pointer; }

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

.hero::before {
    content: ''; position: absolute; top: -50%; right: -30%;
    width: 800px; height: 800px;
    background: radial-gradient(circle, rgba(0,212,255,0.08) 0%, transparent 70%);
    animation: pulse 8s ease-in-out infinite;
}

.hero::after {
    content: ''; position: absolute; bottom: -30%; left: -20%;
    width: 600px; height: 600px;
    background: radial-gradient(circle, rgba(124,58,237,0.06) 0%, transparent 70%);
    animation: pulse 10s ease-in-out infinite reverse;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 1; }
}

.hero-content { position: relative; z-index: 1; max-width: 700px; }

.hero-badge {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 6px 16px; border-radius: 20px;
    background: rgba(0,212,255,0.1); border: 1px solid rgba(0,212,255,0.2);
    font-size: 0.85rem; color: var(--accent-cyan); margin-bottom: 24px;
}

.hero h1 {
    font-size: 3.5rem; font-weight: 800; line-height: 1.2;
    margin-bottom: 24px; letter-spacing: -1px;
}

.hero h1 .gradient-text {
    background: var(--gradient-main);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}

.hero p { font-size: 1.2rem; color: var(--text-gray); margin-bottom: 40px; max-width: 560px; }

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

.btn-primary {
    padding: 14px 32px; border-radius: 10px; font-weight: 700;
    background: var(--gradient-main); color: #fff;
    border: none; cursor: pointer; font-size: 1rem;
    transition: var(--transition);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: var(--shadow-glow); }

.btn-outline {
    padding: 14px 32px; border-radius: 10px; font-weight: 600;
    background: transparent; color: var(--text-white);
    border: 1px solid var(--border-color); cursor: pointer; font-size: 1rem;
    transition: var(--transition);
}
.btn-outline:hover { border-color: var(--accent-cyan); background: rgba(0,212,255,0.05); }

/* --- Stats Bar --- */
.stats-bar {
    padding: 60px 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.stats-grid {
    display: grid; grid-template-columns: repeat(4, 1fr);
    gap: 32px; text-align: center;
}

.stat-item h3 {
    font-size: 2.5rem; font-weight: 800;
    background: var(--gradient-main);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}

.stat-item p { color: var(--text-gray); font-size: 0.95rem; margin-top: 4px; }

/* --- Section Common --- */
.section {
    padding: 100px 0;
}

.section-header {
    text-align: center; margin-bottom: 64px;
}

.section-header .label {
    display: inline-block; padding: 4px 14px; border-radius: 6px;
    background: rgba(0,212,255,0.1); color: var(--accent-cyan);
    font-size: 0.8rem; font-weight: 600; letter-spacing: 1px;
    text-transform: uppercase; margin-bottom: 16px;
}

.section-header h2 {
    font-size: 2.4rem; font-weight: 800; letter-spacing: -0.5px;
    margin-bottom: 16px;
}

.section-header p { color: var(--text-gray); max-width: 600px; margin: 0 auto; font-size: 1.05rem; }

/* --- Solutions Grid --- */
.solutions-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}

.solution-card {
    background: var(--gradient-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    transition: var(--transition);
    position: relative; overflow: hidden;
}

.solution-card:hover {
    transform: translateY(-4px);
    border-color: rgba(0,212,255,0.3);
    box-shadow: var(--shadow-glow);
}

.solution-card .icon {
    width: 56px; height: 56px; border-radius: 14px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.5rem; margin-bottom: 20px;
}

.icon-crypto { background: rgba(0,212,255,0.15); }
.icon-chain { background: rgba(124,58,237,0.15); }
.icon-auth { background: rgba(16,185,129,0.15); }
.icon-cell { background: rgba(59,130,246,0.15); }
.icon-shield { background: rgba(245,158,11,0.15); }
.icon-time { background: rgba(236,72,153,0.15); }

.solution-card h3 { font-size: 1.3rem; font-weight: 700; margin-bottom: 12px; }
.solution-card p { color: var(--text-gray); font-size: 0.95rem; line-height: 1.7; }

.solution-card .tag {
    display: inline-block; margin-top: 16px;
    padding: 4px 10px; border-radius: 4px;
    font-size: 0.75rem; font-weight: 600;
}

.tag-core { background: rgba(0,212,255,0.15); color: var(--accent-cyan); }
.tag-proprietary { background: rgba(124,58,237,0.15); color: var(--accent-purple); }
.tag-standard { background: rgba(16,185,129,0.15); color: var(--accent-green); }

/* --- Products Section --- */
.products-grid {
    display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px;
}

.product-card {
    background: var(--gradient-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 36px;
    display: flex; gap: 24px; align-items: flex-start;
    transition: var(--transition);
}

.product-card:hover {
    border-color: rgba(0,212,255,0.2);
    transform: translateY(-2px);
}

.product-card .num {
    font-size: 2rem; font-weight: 800; color: var(--navy-light);
    min-width: 48px;
    background: var(--gradient-main);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}

.product-card h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 8px; }
.product-card p { color: var(--text-gray); font-size: 0.9rem; }

/* --- Architecture Section --- */
.arch-visual {
    background: var(--gradient-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 48px;
}

.arch-layers { display: flex; flex-direction: column; gap: 2px; }

.arch-layer {
    display: flex; align-items: center; gap: 24px;
    padding: 24px 32px;
    border-radius: var(--radius);
    transition: var(--transition);
}

.arch-layer:hover { background: rgba(255,255,255,0.03); }

.arch-layer .layer-badge {
    min-width: 48px; height: 48px; border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.2rem; font-weight: 800;
}

.layer-t { background: rgba(0,212,255,0.2); color: var(--accent-cyan); }
.layer-o { background: rgba(124,58,237,0.2); color: var(--accent-purple); }
.layer-a { background: rgba(16,185,129,0.2); color: var(--accent-green); }

.arch-layer h4 { font-size: 1.1rem; font-weight: 700; margin-bottom: 4px; }
.arch-layer p { color: var(--text-gray); font-size: 0.9rem; }

.arch-arrow {
    text-align: center; color: var(--text-dim); font-size: 1.2rem;
    padding: 8px 0;
}

/* --- Services Section --- */
.services-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
}

.service-card {
    background: var(--gradient-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    text-align: center;
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-4px);
    border-color: rgba(0,212,255,0.3);
}

.service-card .service-icon {
    width: 64px; height: 64px; border-radius: 16px;
    margin: 0 auto 20px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.8rem;
    background: rgba(0,212,255,0.08);
}

.service-card h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; }
.service-card p { color: var(--text-gray); font-size: 0.85rem; }

/* --- Comparison Table --- */
.compare-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.compare-table thead { background: var(--navy-light); }

.compare-table th {
    padding: 16px 24px;
    text-align: left; font-weight: 700; font-size: 0.95rem;
    border-bottom: 1px solid var(--border-color);
}

.compare-table td {
    padding: 14px 24px;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.9rem; color: var(--text-gray);
}

.compare-table tr:hover td { background: rgba(255,255,255,0.02); }

.compare-table .highlight { color: var(--accent-cyan); font-weight: 600; }

/* --- CTA Section --- */
.cta-section {
    padding: 80px 0;
    text-align: center;
}

.cta-box {
    background: var(--gradient-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 64px 48px;
    position: relative; overflow: hidden;
}

.cta-box::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0;
    height: 3px; background: var(--gradient-main);
}

.cta-box h2 { font-size: 2rem; font-weight: 800; margin-bottom: 16px; }
.cta-box p { color: var(--text-gray); font-size: 1.1rem; margin-bottom: 32px; }

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

/* --- Footer --- */
.footer {
    border-top: 1px solid var(--border-color);
    padding: 60px 0 40px;
}

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

.footer-brand p { color: var(--text-dim); font-size: 0.9rem; margin-top: 12px; line-height: 1.8; }

.footer-col h4 {
    font-size: 0.85rem; font-weight: 700; text-transform: uppercase;
    letter-spacing: 1px; color: var(--text-gray); margin-bottom: 16px;
}

.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { color: var(--text-dim); font-size: 0.9rem; }
.footer-col ul li a:hover { color: var(--text-white); }

.footer-bottom {
    display: flex; justify-content: space-between; align-items: center;
    padding-top: 32px; border-top: 1px solid var(--border-color);
    color: var(--text-dim); font-size: 0.85rem;
}

/* --- Responsive --- */
@media (max-width: 1024px) {
    .solutions-grid { grid-template-columns: repeat(2, 1fr); }
    .services-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .menu-toggle { display: block; }
    .nav-links { display: none; position: absolute; top: 72px; left: 0; right: 0;
        flex-direction: column; background: var(--navy-deep); padding: 24px;
        border-bottom: 1px solid var(--border-color); gap: 16px;
    }
    .nav-links.active { display: flex; }
    .nav-cta { display: none; }

    .hero h1 { font-size: 2.2rem; }
    .hero p { font-size: 1rem; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .solutions-grid { grid-template-columns: 1fr; }
    .products-grid { grid-template-columns: 1fr; }
    .services-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .cta-actions { flex-direction: column; }
}