/* ═══════════════════════════════════════════════════════════════
   CITY NAVIGATOR — Design System
   Dark-first, glassmorphism, premium spatial UI
   ═══════════════════════════════════════════════════════════════ */

:root {
    --bg: #0a0e1a;
    --bg-surface: #111827;
    --bg-glass: rgba(17, 24, 39, 0.75);
    --bg-glass-hover: rgba(17, 24, 39, 0.9);
    --border: rgba(255, 255, 255, 0.08);
    --border-active: rgba(99, 102, 241, 0.5);
    --text: #e2e8f0;
    --text-dim: #94a3b8;
    --text-muted: #64748b;
    --accent: #6366f1;
    --accent-glow: rgba(99, 102, 241, 0.3);
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #06b6d4;
    --radius: 12px;
    --radius-sm: 8px;
    --font: 'Inter', -apple-system, sans-serif;
    --font-display: 'Outfit', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
    --bg: #f1f5f9;
    --bg-surface: #ffffff;
    --bg-glass: rgba(255, 255, 255, 0.85);
    --bg-glass-hover: rgba(255, 255, 255, 0.95);
    --border: rgba(0, 0, 0, 0.08);
    --border-active: rgba(99, 102, 241, 0.4);
    --text: #0f172a;
    --text-dim: #475569;
    --text-muted: #94a3b8;
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    overflow: hidden;
    height: 100vh;
    width: 100vw;
}

/* ── Loader ───────────────────────────────────────────────── */
.loader {
    position: fixed; inset: 0; z-index: 9999;
    display: flex; align-items: center; justify-content: center;
    background: #0a0e1a;
    transition: opacity 0.6s, visibility 0.6s;
}
.loader.fade-out { opacity: 0; visibility: hidden; }
.loader-content { text-align: center; }
.loader-icon { font-size: 3rem; margin-bottom: 1rem; animation: float 2s ease-in-out infinite; }
.loader-title {
    font-family: var(--font-display); font-size: 1.8rem; font-weight: 800;
    background: linear-gradient(135deg, #6366f1, #06b6d4, #8b5cf6);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    margin-bottom: 0.3rem;
}
.loader-sub { font-size: 0.8rem; color: #64748b; margin-bottom: 1.2rem; }
.loader-bar {
    width: 200px; height: 3px; background: rgba(255,255,255,0.1);
    border-radius: 99px; overflow: hidden; margin: 0 auto;
}
.loader-bar-fill {
    height: 100%; width: 0%; border-radius: 99px;
    background: linear-gradient(90deg, #6366f1, #06b6d4);
    animation: loading 1.5s ease-out forwards;
}
@keyframes loading { to { width: 100%; } }
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }

/* ── Top Bar ──────────────────────────────────────────────── */
.topbar {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    height: 52px; display: flex; align-items: center; justify-content: space-between;
    padding: 0 1rem; gap: 1rem;
    background: var(--bg-glass); backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--border);
}
.topbar-left { display: flex; align-items: center; gap: 0.5rem; flex-shrink: 0; }
.topbar-logo { font-size: 1.3rem; }
.topbar-title { font-family: var(--font-display); font-size: 1rem; font-weight: 700; }
.topbar-badge {
    font-size: 0.6rem; font-weight: 700; text-transform: uppercase;
    padding: 0.15rem 0.4rem; border-radius: 4px; letter-spacing: 1px;
    background: var(--accent); color: white;
}
.topbar-center { flex: 1; max-width: 400px; }
.search-wrap {
    position: relative; display: flex; align-items: center;
}
.search-icon {
    position: absolute; left: 0.6rem; font-size: 0.8rem; pointer-events: none;
}
.search-input {
    width: 100%; padding: 0.4rem 0.6rem 0.4rem 2rem;
    background: var(--bg-surface); border: 1px solid var(--border);
    border-radius: var(--radius-sm); color: var(--text);
    font-size: 0.8rem; font-family: inherit; outline: none;
    transition: border-color var(--transition);
}
.search-input:focus { border-color: var(--accent); }
.search-input::placeholder { color: var(--text-muted); }
.topbar-right { display: flex; align-items: center; gap: 0.5rem; flex-shrink: 0; }
.topbar-btn {
    padding: 0.35rem 0.7rem; border: 1px solid var(--border);
    border-radius: var(--radius-sm); background: transparent; color: var(--text);
    font-size: 0.75rem; cursor: pointer; font-family: inherit;
    transition: all var(--transition);
}
.topbar-btn:hover { background: var(--bg-surface); border-color: var(--border-active); }
.topbar-btn.active { background: var(--accent); color: white; border-color: var(--accent); }
.topbar-stats { display: flex; align-items: center; gap: 0.3rem; font-size: 0.7rem; color: var(--text-dim); }
.stat-sep { opacity: 0.4; }

/* ── Zone Bar ─────────────────────────────────────────────── */
.zone-bar {
    position: fixed; top: 52px; left: 0; right: 0; z-index: 90;
    display: flex; align-items: center; gap: 0.4rem;
    padding: 0.4rem 1rem; overflow-x: auto;
    background: var(--bg-glass); backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    scrollbar-width: none;
}
.zone-bar::-webkit-scrollbar { display: none; }
.zone-chip {
    display: inline-flex; align-items: center; gap: 0.3rem;
    padding: 0.3rem 0.7rem; border-radius: 99px;
    border: 1px solid var(--border); background: transparent;
    color: var(--text-dim); font-size: 0.7rem; font-weight: 600;
    cursor: pointer; white-space: nowrap; font-family: inherit;
    transition: all var(--transition);
}
.zone-chip:hover { border-color: var(--border-active); color: var(--text); background: var(--bg-surface); }
.zone-chip.active { background: var(--accent); color: white; border-color: var(--accent); }
.zone-chip .zone-dot {
    width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0;
}

/* ── 3D Canvas ────────────────────────────────────────────── */
#city-canvas {
    position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; z-index: 0;
}

/* ── 2D Fallback Grid ─────────────────────────────────────── */
.grid-2d {
    position: fixed; top: 88px; left: 0; right: 0; bottom: 0; z-index: 50;
    padding: 1.5rem; overflow-y: auto;
    background: var(--bg);
    display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem; align-content: start;
}
.grid-2d.hidden { display: none; }
.grid-card {
    background: var(--bg-surface); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 1rem;
    cursor: pointer; transition: all var(--transition);
}
.grid-card:hover { border-color: var(--border-active); transform: translateY(-2px); box-shadow: var(--shadow); }
.grid-card-header { display: flex; align-items: center; gap: 0.5rem; margin-bottom: 0.5rem; }
.grid-card-icon { font-size: 1.5rem; }
.grid-card-name { font-weight: 700; font-size: 0.9rem; }
.grid-card-cat { font-size: 0.65rem; color: var(--text-muted); font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; }
.grid-card-desc { font-size: 0.75rem; color: var(--text-dim); line-height: 1.5; margin-bottom: 0.5rem; }
.grid-card-meta { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.grid-card-meta .meta-badge {
    font-size: 0.6rem; font-weight: 700; padding: 0.15rem 0.4rem;
    border-radius: 4px; text-transform: uppercase;
}
.meta-badge.prod { background: rgba(16,185,129,0.15); color: var(--success); }
.meta-badge.staging { background: rgba(245,158,11,0.15); color: var(--warning); }
.meta-badge.dev { background: rgba(6,182,212,0.15); color: var(--info); }
.meta-badge.planned { background: rgba(148,163,184,0.15); color: var(--text-muted); }

/* ── Info Panel ───────────────────────────────────────────── */
.info-panel {
    position: fixed; top: 0; right: -420px; bottom: 0; z-index: 200;
    width: 400px; max-width: 90vw;
    background: var(--bg-surface); border-left: 1px solid var(--border);
    box-shadow: -8px 0 40px rgba(0,0,0,0.3);
    transition: right var(--transition);
    overflow-y: auto;
}
.info-panel.open { right: 0; }
.panel-close {
    position: absolute; top: 0.75rem; right: 0.75rem;
    width: 28px; height: 28px; border-radius: 50%;
    border: 1px solid var(--border); background: var(--bg-glass);
    color: var(--text); font-size: 0.8rem; cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: all var(--transition); z-index: 10;
}
.panel-close:hover { background: var(--danger); color: white; border-color: var(--danger); }
.panel-content { padding: 1.25rem; }
.panel-header { margin-bottom: 1rem; }
.panel-icon { font-size: 2.5rem; margin-bottom: 0.5rem; }
.panel-name { font-family: var(--font-display); font-size: 1.3rem; font-weight: 700; }
.panel-category { font-size: 0.7rem; color: var(--text-muted); font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; margin-top: 0.2rem; }
.panel-status {
    display: inline-block; padding: 0.2rem 0.5rem; border-radius: 4px;
    font-size: 0.65rem; font-weight: 700; text-transform: uppercase; margin-top: 0.5rem;
}
.panel-section { margin-top: 1.2rem; }
.panel-section-title {
    font-size: 0.7rem; font-weight: 700; text-transform: uppercase;
    letter-spacing: 0.5px; color: var(--text-muted); margin-bottom: 0.5rem;
}
.panel-desc { font-size: 0.8rem; color: var(--text-dim); line-height: 1.6; }
.panel-projects-list { list-style: none; }
.panel-project-item {
    display: flex; align-items: center; gap: 0.5rem;
    padding: 0.5rem; border-radius: var(--radius-sm);
    transition: background var(--transition); cursor: default;
}
.panel-project-item:hover { background: rgba(255,255,255,0.03); }
.panel-project-dot { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; }
.panel-project-name { font-size: 0.8rem; font-weight: 600; }
.panel-project-desc { font-size: 0.7rem; color: var(--text-muted); }
.panel-link {
    display: inline-flex; align-items: center; gap: 0.3rem;
    color: var(--accent); text-decoration: none; font-size: 0.8rem; font-weight: 500;
    transition: opacity var(--transition);
}
.panel-link:hover { opacity: 0.7; }
.panel-kv { display: grid; grid-template-columns: 100px 1fr; gap: 0.3rem; font-size: 0.8rem; }
.panel-kv-key { color: var(--text-muted); font-weight: 500; }
.panel-kv-val { font-family: var(--font-mono); font-size: 0.75rem; }

/* ── Minimap ──────────────────────────────────────────────── */
.minimap {
    position: fixed; bottom: 1rem; left: 1rem; z-index: 80;
    width: 180px; height: 180px;
    background: var(--bg-glass); backdrop-filter: blur(12px);
    border: 1px solid var(--border); border-radius: var(--radius);
    overflow: hidden; box-shadow: var(--shadow);
}
#minimap-canvas { width: 100%; height: 100%; }

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 768px) {
    .topbar-stats { display: none; }
    .minimap { display: none; }
    .info-panel { width: 100vw; max-width: 100vw; }
    .grid-2d { padding: 0.75rem; grid-template-columns: 1fr; }
}