/*
Theme Name: CloudAutoSync Platform
Description: 클라우드 자동 동기화 서비스
Version: 1.0.0
Author: CloudAutoSync Labs
Text Domain: cas-theme
*/

:root {
    --cas-bg: #0A0A0F;
    --cas-bg-soft: #12121A;
    --cas-bg-card: #16161F;
    --cas-bg-elevated: #1C1C28;
    --cas-text: #FAFAFA;
    --cas-text-muted: #9CA3AF;
    --cas-text-dim: #6B7280;
    --cas-primary: #8B5CF6;
    --cas-primary-light: #A78BFA;
    --cas-secondary: #3B82F6;
    --cas-accent: #06B6D4;
    --cas-gradient: linear-gradient(135deg, #8B5CF6 0%, #3B82F6 50%, #06B6D4 100%);
    --cas-gradient-text: linear-gradient(90deg, #8B5CF6, #3B82F6, #06B6D4, #8B5CF6);
    --cas-border: rgba(255,255,255,0.08);
    --cas-border-light: rgba(255,255,255,0.12);
    --cas-glow: 0 0 50px rgba(139, 92, 246, 0.2);
    --cas-radius: 12px;
    --cas-radius-lg: 20px;
    --cas-font: 'Inter', -apple-system, sans-serif;
    --cas-transition: all 0.3s ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--cas-font); font-size: 16px; line-height: 1.7; color: var(--cas-text); background: var(--cas-bg); }
a { color: var(--cas-primary-light); text-decoration: none; transition: var(--cas-transition); }
a:hover { color: var(--cas-accent); }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }
h1, h2, h3 { font-weight: 700; line-height: 1.2; color: var(--cas-text); }
h1 { font-size: clamp(2rem, 5vw, 3rem); }
h2 { font-size: clamp(1.5rem, 4vw, 2.25rem); }
h3 { font-size: clamp(1.125rem, 2vw, 1.375rem); }

.cas-container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }
.cas-section { padding: 5rem 0; }

/* Header */
.cas-header { position: fixed; top: 0; left: 0; right: 0; z-index: 100; padding: 1rem 0; background: rgba(10, 10, 15, 0.85); backdrop-filter: blur(20px); border-bottom: 1px solid var(--cas-border); }
.cas-header-inner { display: flex; align-items: center; justify-content: space-between; }
.cas-logo { display: flex; align-items: center; gap: 0.625rem; font-weight: 700; font-size: 1.125rem; color: var(--cas-text); }
.cas-logo-icon { font-size: 1.5rem; }
.cas-nav { display: flex; align-items: center; gap: 2rem; }
.cas-nav-list { display: flex; gap: 1.75rem; }
.cas-nav-item a { color: var(--cas-text-muted); font-weight: 500; font-size: 0.9375rem; }
.cas-nav-item a:hover, .cas-nav-item.current a { color: var(--cas-text); }
.cas-nav-cta { padding: 0.625rem 1.25rem; background: var(--cas-gradient); color: var(--cas-bg) !important; border-radius: var(--cas-radius); font-weight: 600; font-size: 0.875rem; }
.cas-nav-cta:hover { transform: translateY(-2px); box-shadow: var(--cas-glow); color: var(--cas-bg) !important; }

/* Mobile Menu */
.cas-menu-toggle { display: none; width: 44px; height: 44px; background: var(--cas-bg-card); border: 1px solid var(--cas-border); border-radius: var(--cas-radius); cursor: pointer; flex-direction: column; justify-content: center; align-items: center; gap: 5px; }
.cas-menu-toggle span { display: block; width: 20px; height: 2px; background: var(--cas-text); transition: var(--cas-transition); }
.cas-mobile-menu { display: none; position: fixed; top: 72px; left: 0; right: 0; bottom: 0; background: var(--cas-bg); z-index: 99; padding: 2rem; flex-direction: column; }
.cas-mobile-menu.active { display: flex; }
.cas-mobile-nav-list { display: flex; flex-direction: column; gap: 0.5rem; }
.cas-mobile-nav-item a { display: block; padding: 1rem; font-size: 1.125rem; font-weight: 600; color: var(--cas-text-muted); border-radius: var(--cas-radius); }
.cas-mobile-nav-item a:hover { background: var(--cas-bg-card); color: var(--cas-text); }
.cas-mobile-cta { margin-top: 2rem; }
.cas-mobile-cta a { display: block; text-align: center; padding: 1rem; }

/* Buttons */
.cas-btn { display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem; padding: 0.875rem 1.75rem; font-weight: 600; border-radius: var(--cas-radius); transition: var(--cas-transition); border: none; cursor: pointer; font-size: 0.9375rem; }
.cas-btn-primary { background: var(--cas-gradient); color: var(--cas-bg); }
.cas-btn-primary:hover { transform: translateY(-2px); box-shadow: var(--cas-glow); color: var(--cas-bg); }
.cas-btn-outline { background: transparent; color: var(--cas-text); border: 1px solid var(--cas-border-light); }
.cas-btn-outline:hover { background: var(--cas-bg-card); border-color: var(--cas-primary); }

/* Badge */
.cas-badge { display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.5rem 1rem; background: rgba(139, 92, 246, 0.1); border: 1px solid rgba(139, 92, 246, 0.2); color: var(--cas-primary-light); border-radius: 100px; font-size: 0.8125rem; font-weight: 600; }

/* Hero */
.cas-hero { padding: 10rem 0 5rem; text-align: center; position: relative; overflow: hidden; }
.cas-hero::before { content: ''; position: absolute; top: -200px; left: 50%; transform: translateX(-50%); width: 800px; height: 600px; background: radial-gradient(ellipse, rgba(139, 92, 246, 0.15) 0%, transparent 70%); pointer-events: none; }
.cas-hero-content { position: relative; max-width: 800px; margin: 0 auto; }
.cas-hero h1 { margin: 1.5rem 0; }
.cas-hero h1 .cas-gradient-text { background: var(--cas-gradient-text); background-size: 200% auto; -webkit-background-clip: text; -webkit-text-fill-color: transparent; animation: casShine 3s linear infinite; }
@keyframes casShine { to { background-position: 200% center; } }
.cas-hero-desc { font-size: 1.125rem; color: var(--cas-text-muted); margin-bottom: 2rem; line-height: 1.8; }
.cas-hero-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* Features */
.cas-features { background: var(--cas-bg-soft); }
.cas-section-header { text-align: center; max-width: 600px; margin: 0 auto 3rem; }
.cas-section-header p { color: var(--cas-text-muted); margin-top: 0.75rem; }
.cas-features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.cas-feature-card { background: var(--cas-bg-card); border: 1px solid var(--cas-border); border-radius: var(--cas-radius-lg); padding: 2rem; transition: var(--cas-transition); }
.cas-feature-card:hover { border-color: var(--cas-primary); box-shadow: var(--cas-glow); transform: translateY(-4px); }
.cas-feature-icon { width: 50px; height: 50px; background: var(--cas-gradient); border-radius: var(--cas-radius); display: flex; align-items: center; justify-content: center; font-size: 1.5rem; margin-bottom: 1.25rem; }
.cas-feature-card h3 { margin-bottom: 0.75rem; }
.cas-feature-card p { color: var(--cas-text-muted); font-size: 0.9375rem; line-height: 1.7; }

/* Archive Header */
.cas-archive-header { padding: 9rem 0 3rem; text-align: center; position: relative; background: var(--cas-bg-soft); }
.cas-archive-header::before { content: ''; position: absolute; top: 0; left: 50%; transform: translateX(-50%); width: 600px; height: 400px; background: radial-gradient(ellipse, rgba(139, 92, 246, 0.1) 0%, transparent 70%); pointer-events: none; }
.cas-archive-header h1 { position: relative; margin-bottom: 0.5rem; }
.cas-archive-header p { color: var(--cas-text-muted); position: relative; }
.cas-archive-posts { padding: 4rem 0; }

/* Posts Grid - 2 columns */
.cas-posts-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }

/* Blog Card */
.cas-blog-card { background: var(--cas-bg-card); border: 1px solid var(--cas-border); border-radius: var(--cas-radius-lg); overflow: hidden; transition: var(--cas-transition); display: flex; flex-direction: column; }
.cas-blog-card:hover { border-color: var(--cas-primary); transform: translateY(-4px); box-shadow: var(--cas-glow); }
.cas-blog-image { width: 100%; height: 200px; overflow: hidden; flex-shrink: 0; }
.cas-blog-image img { width: 100%; height: 100%; object-fit: cover; transition: var(--cas-transition); }
.cas-blog-card:hover .cas-blog-image img { transform: scale(1.05); }
.cas-blog-content { padding: 1.5rem; display: flex; flex-direction: column; flex-grow: 1; }
.cas-blog-meta { display: flex; gap: 0.75rem; font-size: 0.8125rem; color: var(--cas-text-dim); margin-bottom: 0.75rem; }
.cas-blog-title { font-size: 1.0625rem; font-weight: 600; margin-bottom: 0.75rem; line-height: 1.4; }
.cas-blog-title a { color: var(--cas-text); }
.cas-blog-title a:hover { color: var(--cas-primary-light); }
.cas-blog-excerpt { font-size: 0.9375rem; color: var(--cas-text-muted); line-height: 1.7; flex-grow: 1; }
.cas-blog-link { margin-top: 1rem; font-size: 0.875rem; font-weight: 600; color: var(--cas-primary-light); }

/* Pagination */
.cas-pagination { display: flex; justify-content: center; gap: 0.5rem; margin-top: 3rem; padding-top: 2rem; border-top: 1px solid var(--cas-border); flex-wrap: wrap; }
.cas-pagination a, .cas-pagination span { display: inline-flex; align-items: center; justify-content: center; min-width: 44px; height: 44px; padding: 0 1rem; border-radius: var(--cas-radius); font-weight: 500; transition: var(--cas-transition); border: 1px solid var(--cas-border); }
.cas-pagination a { background: var(--cas-bg-card); color: var(--cas-text-muted); }
.cas-pagination a:hover { background: var(--cas-bg-elevated); border-color: var(--cas-primary); color: var(--cas-text); }
.cas-pagination .current { background: var(--cas-gradient); border-color: transparent; color: var(--cas-bg); }
.cas-pagination .dots { background: transparent; border: none; color: var(--cas-text-dim); }
.cas-pagination .prev, .cas-pagination .next { padding: 0 1.25rem; }

/* CTA */
.cas-cta { background: var(--cas-bg-soft); text-align: center; position: relative; overflow: hidden; }
.cas-cta::before { content: ''; position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 600px; height: 400px; background: radial-gradient(ellipse, rgba(59, 130, 246, 0.1) 0%, transparent 70%); }
.cas-cta-content { position: relative; max-width: 600px; margin: 0 auto; }
.cas-cta h2 { margin-bottom: 1rem; }
.cas-cta p { color: var(--cas-text-muted); margin-bottom: 2rem; }

/* Footer */
.cas-footer { background: var(--cas-bg); padding: 4rem 0 2rem; border-top: 1px solid var(--cas-border); }
.cas-footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 2.5rem; margin-bottom: 3rem; }
.cas-footer-logo { display: flex; align-items: center; gap: 0.625rem; font-weight: 700; font-size: 1.125rem; color: var(--cas-text); margin-bottom: 1rem; }
.cas-footer-desc { color: var(--cas-text-muted); font-size: 0.9375rem; line-height: 1.7; margin-bottom: 1.5rem; }
.cas-footer-social { display: flex; gap: 0.75rem; }
.cas-footer-social a { width: 38px; height: 38px; background: var(--cas-bg-card); border: 1px solid var(--cas-border); border-radius: 10px; display: flex; align-items: center; justify-content: center; color: var(--cas-text-muted); }
.cas-footer-social a:hover { background: var(--cas-gradient); border-color: transparent; color: var(--cas-bg); }
.cas-footer-col h4 { font-size: 0.875rem; font-weight: 600; color: var(--cas-text); margin-bottom: 1.25rem; text-transform: uppercase; letter-spacing: 0.05em; }
.cas-footer-links li { margin-bottom: 0.625rem; }
.cas-footer-links a { color: var(--cas-text-muted); font-size: 0.9375rem; }
.cas-footer-links a:hover { color: var(--cas-primary-light); }
.cas-footer-bottom { display: flex; justify-content: space-between; align-items: center; padding-top: 2rem; border-top: 1px solid var(--cas-border); flex-wrap: wrap; gap: 1rem; }
.cas-copyright { color: var(--cas-text-dim); font-size: 0.875rem; }
.cas-footer-legal { display: flex; gap: 1.5rem; }
.cas-footer-legal a { color: var(--cas-text-dim); font-size: 0.875rem; }

/* Single */
.cas-single { padding: 9rem 0 4rem; }
.cas-single-header { max-width: 800px; margin: 0 auto 2rem; text-align: center; }
.cas-single-category { display: inline-block; padding: 0.375rem 1rem; background: rgba(139, 92, 246, 0.1); border: 1px solid rgba(139, 92, 246, 0.2); color: var(--cas-primary-light); border-radius: 100px; font-size: 0.8125rem; font-weight: 600; margin-bottom: 1rem; }
.cas-single-title { margin-bottom: 1rem; }
.cas-single-meta { color: var(--cas-text-dim); }
.cas-single-featured { max-width: 900px; margin: 0 auto 3rem; border-radius: var(--cas-radius-lg); overflow: hidden; border: 1px solid var(--cas-border); }
.cas-single-content { max-width: 700px; margin: 0 auto; }
.cas-single-content p { margin-bottom: 1.5rem; color: var(--cas-text-muted); font-size: 1.0625rem; line-height: 1.9; }
.cas-single-content h2 { color: var(--cas-text); margin: 2.5rem 0 1rem; }

/* Responsive */
@media (max-width: 1024px) {
    .cas-nav { display: none; }
    .cas-menu-toggle { display: flex; }
    .cas-features-grid { grid-template-columns: repeat(2, 1fr); }
    .cas-footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
    .cas-section { padding: 4rem 0; }
    .cas-hero { padding: 8rem 0 4rem; }
    .cas-features-grid { grid-template-columns: 1fr; }
    .cas-posts-grid { grid-template-columns: 1fr; }
    .cas-footer-grid { grid-template-columns: 1fr; }
    .cas-footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 480px) {
    .cas-hero-actions { flex-direction: column; }
    .cas-hero-actions .cas-btn { width: 100%; }
}