/* bbss.dev 공통 스타일 */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --bg-primary:    #0d1117;
    --bg-card:       #161b22;
    --bg-card-hover: #1c2128;
    --border:        #30363d;
    --accent:        #9d6ef8;
    --accent-dim:    rgba(157, 110, 248, 0.12);
    --accent-border: rgba(157, 110, 248, 0.30);
    --accent-glow:   rgba(157, 110, 248, 0.12);
    --text-primary:  #e6edf3;
    --text-secondary:#8b949e;
    --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Malgun Gothic', sans-serif;
}

body {
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main { flex: 1; }

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ── 헤더 ── */
.site-header {
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    background: rgba(13, 17, 23, 0.85);
    backdrop-filter: blur(12px);
    z-index: 100;
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 56px;
}

.nav-logo {
    font-size: 18px;
    font-weight: 700;
    text-decoration: none;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

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

.nav-links {
    display: flex;
    gap: 24px;
}

.nav-links a {
    font-size: 14px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s;
}

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

/* ── 히어로 ── */
.hero {
    padding: 100px 24px 72px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -40px;
    left: 50%;
    transform: translateX(-50%);
    width: 700px;
    height: 400px;
    background: radial-gradient(ellipse, rgba(157, 110, 248, 0.18) 0%, transparent 68%);
    pointer-events: none;
}

.hero-title {
    font-size: clamp(52px, 9vw, 88px);
    font-weight: 800;
    letter-spacing: -3px;
    line-height: 1;
    background: linear-gradient(135deg, #e6edf3 0%, #9d6ef8 55%, #6366f1 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 20px;
}

.hero-subtitle {
    font-size: 17px;
    color: var(--text-secondary);
    max-width: 420px;
    margin: 0 auto;
    line-height: 1.7;
}

/* ── 프로그램 목록 ── */
.programs {
    padding: 32px 0 80px;
}

.section-label {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1.2px;
    margin-bottom: 20px;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 16px;
}

/* ── 앱 카드 ── */
.app-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-left: 3px solid var(--accent);
    border-radius: 12px;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    min-height: 240px;
    transition: background 0.2s, border-color 0.2s, box-shadow 0.2s;
    text-decoration: none;
    color: inherit;
}

.app-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent);
    box-shadow: 0 0 28px var(--accent-glow);
}

.card-header {
    display: flex;
    align-items: center;
    gap: 14px;
}

.app-icon {
    width: 48px;
    height: 48px;
    background: var(--accent-dim);
    border: 1px solid var(--accent-border);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    flex-shrink: 0;
}

.app-meta { flex: 1; }

.app-name {
    font-size: 17px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.version-badge {
    font-size: 11px;
    font-weight: 600;
    color: var(--accent);
    background: var(--accent-dim);
    border: 1px solid var(--accent-border);
    padding: 2px 8px;
    border-radius: 20px;
}

.pwa-badge {
    color: #3fb950;
    background: rgba(63, 185, 80, 0.12);
    border-color: rgba(63, 185, 80, 0.3);
}

.win-badge {
    color: #58a6ff;
    background: rgba(88, 166, 255, 0.12);
    border-color: rgba(88, 166, 255, 0.3);
}

.app-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.65;
    flex: 1;
    min-height: 60px;
}

.card-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

/* ── 버튼 ── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.18s;
    cursor: pointer;
    border: none;
    white-space: nowrap;
}

.btn-primary {
    background: var(--accent);
    color: #fff;
}

.btn-primary:hover {
    background: #8b5cf6;
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(157, 110, 248, 0.35);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border);
}

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

/* ── 푸터 ── */
.site-footer {
    border-top: 1px solid var(--border);
    padding: 28px 0;
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 8px;
}

.footer-copy {
    font-size: 13px;
    color: var(--text-secondary);
}

.footer-links {
    display: flex;
    gap: 16px;
}

.footer-links a {
    font-size: 13px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s;
}

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

/* ── 반응형 ── */
@media (max-width: 600px) {
    .hero { padding: 72px 20px 48px; }
    .hero-title { letter-spacing: -2px; }
    .footer-inner { flex-direction: column; align-items: flex-start; }
}