* { box-sizing: border-box; margin: 0; padding: 0; }
body { background: var(--bg-base); color: var(--text-primary); font-family: system-ui, -apple-system, sans-serif; min-height: 100vh; display: flex; flex-direction: column; transition: var(--transition-smooth); -webkit-font-smoothing: antialiased; }
.app-header { background: var(--bg-surface); backdrop-filter: var(--blur-glass); -webkit-backdrop-filter: var(--blur-glass); border-bottom: 1px solid var(--bg-surface-border); position: sticky; top: 0; z-index: 1000; }
.header-container { max-width: 1400px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; padding: 1rem 1.5rem; gap: 1rem; }
.logo { font-weight: 800; font-size: 1.3rem; text-decoration: none; color: var(--text-primary); letter-spacing: -0.03em; flex-shrink: 0; }
.logo-accent { background: var(--accent-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.search-container { flex: 0 1 500px; position: relative; width: 100%; }
#global-search { width: 100%; padding: 0.6rem 1rem; background: rgba(0,0,0,0.4); border: 1px solid var(--bg-surface-border); border-radius: 12px; color: var(--text-primary); outline: none; transition: var(--transition-smooth); font-size: 0.95rem; }
body.light-theme #global-search { background: rgba(255,255,255,0.6); }
#global-search:focus { border-color: var(--accent-glow); box-shadow: 0 0 15px rgba(59, 130, 246, 0.15); }
.search-dropdown { position: absolute; top: calc(100% + 0.5rem); left: 0; right: 0; background: #0f0f12; border: 1px solid var(--bg-surface-border); border-radius: 12px; max-height: 280px; overflow-y: auto; z-index: 1001; box-shadow: 0 12px 30px rgba(0,0,0,0.6); padding: 0.25rem; }
body.light-theme .search-dropdown { background: #ffffff; box-shadow: 0 12px 30px rgba(0,0,0,0.1); }
.search-item { display: block; padding: 0.7rem 1rem; color: var(--text-primary); text-decoration: none; font-size: 0.9rem; border-radius: 8px; transition: var(--transition-smooth); }
.search-item:hover { background: rgba(255,255,255,0.06); color: var(--accent-glow); }
body.light-theme .search-item:hover { background: rgba(0,0,0,0.04); }
.btn-icon { background: transparent; border: none; font-size: 1.2rem; cursor: pointer; color: var(--text-primary); padding: 0.25rem; }
.app-main { flex: 1; max-width: 1400px; width: 100%; margin: 0 auto; padding: 2.5rem 1.5rem; }
.app-footer { background: var(--bg-surface); border-top: 1px solid var(--bg-surface-border); padding: 1.2rem 1.5rem; font-size: 0.8rem; color: var(--text-secondary); }
.footer-content { max-width: 1400px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 0.75rem; }
.footer-links a { color: var(--text-secondary); text-decoration: none; margin-left: 1rem; }
.hidden { display: none !important; }

@media (max-width: 640px) {
    .header-container { flex-direction: column; gap: 0.75rem; padding: 0.85rem 1rem; }
    .search-container { order: 3; flex: none; width: 100%; }
    .logo { font-size: 1.20rem; }
    .app-main { padding: 1.5rem 1rem; }
    .footer-content { flex-direction: column; text-align: center; gap: 0.5rem; }
    .footer-links a { margin: 0 0.5rem; }
}