* { margin: 0; padding: 0; box-sizing: border-box; }
:root { --bg: #0f0f1a; --card: #1a1a2e; --accent: #e94560; --accent2: #0f3460; --text: #e0e0e0; --muted: #6b7280; --border: rgba(255,255,255,0.08); }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; background: var(--bg); color: var(--text); min-height: 100vh; }
a { color: var(--accent); text-decoration: none; }

/* Nav */
.navbar { background: var(--card); border-bottom: 1px solid var(--border); padding: 0 24px; display: flex; align-items: center; height: 60px; position: sticky; top: 0; z-index: 100; }
.navbar .logo { font-size: 1.3rem; font-weight: 700; color: #fff; display: flex; align-items: center; gap: 10px; }
.navbar .logo span { background: linear-gradient(135deg, var(--accent), #ff6b6b); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.nav-tabs { display: flex; gap: 0; margin-left: 40px; height: 100%; }
.nav-tab { padding: 0 20px; height: 100%; display: flex; align-items: center; cursor: pointer; color: var(--muted); font-weight: 500; border-bottom: 2px solid transparent; transition: all 0.2s; }
.nav-tab:hover { color: var(--text); }
.nav-tab.active { color: #fff; border-bottom-color: var(--accent); }

/* Layout */
.container { max-width: 1200px; margin: 0 auto; padding: 24px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 20px; }

/* Gallery */
.upload-zone { border: 2px dashed var(--border); border-radius: 12px; padding: 40px; text-align: center; cursor: pointer; transition: all 0.2s; }
.upload-zone:hover { border-color: var(--accent); background: rgba(233,69,96,0.05); }
.upload-zone.dragover { border-color: var(--accent); background: rgba(233,69,96,0.1); }
.photo-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 16px; margin-top: 20px; }
.photo-card { position: relative; border-radius: 8px; overflow: hidden; aspect-ratio: 1; cursor: pointer; }
.photo-card img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s; }
.photo-card:hover img { transform: scale(1.05); }
.photo-card .overlay { position: absolute; inset: 0; background: linear-gradient(transparent 60%, rgba(0,0,0,0.8)); opacity: 0; transition: opacity 0.2s; display: flex; align-items: flex-end; padding: 12px; }
.photo-card:hover .overlay { opacity: 1; }
.photo-card .delete-btn { position: absolute; top: 8px; right: 8px; background: rgba(0,0,0,0.6); border: none; color: #ff6b6b; width: 28px; height: 28px; border-radius: 50%; cursor: pointer; display: none; font-size: 1rem; }
.photo-card:hover .delete-btn { display: flex; align-items: center; justify-content: center; }

/* Lightbox */
.lightbox { position: fixed; inset: 0; background: rgba(0,0,0,0.9); z-index: 200; display: flex; align-items: center; justify-content: center; }
.lightbox img { max-width: 90vw; max-height: 90vh; border-radius: 8px; }
.lightbox .close-btn { position: absolute; top: 20px; right: 20px; background: none; border: none; color: #fff; font-size: 2rem; cursor: pointer; }

/* AI Designer */
.style-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 16px 0; }
.style-option { padding: 12px; border: 2px solid var(--border); border-radius: 8px; text-align: center; cursor: pointer; transition: all 0.2s; }
.style-option:hover { border-color: rgba(233,69,96,0.5); }
.style-option.selected { border-color: var(--accent); background: rgba(233,69,96,0.1); }
.style-emoji { font-size: 1.5rem; display: block; margin-bottom: 4px; }

/* Floor plan */
.floorplan-container { display: flex; gap: 16px; }
.canvas-wrap { flex: 1; position: relative; }
.floorplan-canvas { background: #111; border-radius: 8px; cursor: crosshair; display: block; width: 100%; }
.room-sidebar { width: 280px; flex-shrink: 0; }
.room-item { padding: 10px 12px; border: 1px solid var(--border); border-radius: 6px; margin-bottom: 6px; cursor: pointer; transition: all 0.15s; display: flex; align-items: center; gap: 10px; }
.room-item:hover { background: rgba(255,255,255,0.03); }
.room-item.active { border-color: var(--accent); background: rgba(233,69,96,0.08); }
.room-color { width: 12px; height: 12px; border-radius: 3px; flex-shrink: 0; }
.toolbar { display: flex; gap: 8px; margin-bottom: 12px; flex-wrap: wrap; }
.toolbar button, .toolbar select { background: var(--card); border: 1px solid var(--border); color: var(--text); padding: 6px 14px; border-radius: 6px; cursor: pointer; font-size: 0.85rem; }
.toolbar button:hover { background: rgba(255,255,255,0.05); }
.toolbar button.active { border-color: var(--accent); color: var(--accent); }

/* Buttons */
.btn { padding: 10px 20px; border-radius: 8px; border: none; cursor: pointer; font-weight: 500; transition: all 0.2s; font-size: 0.9rem; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: #d63851; }
.btn-secondary { background: rgba(255,255,255,0.05); color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { background: rgba(255,255,255,0.1); }
.btn-sm { padding: 6px 12px; font-size: 0.8rem; }

/* Responsive */
@media (max-width: 768px) {
    .floorplan-container { flex-direction: column; }
    .room-sidebar { width: 100%; }
    .photo-grid { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); }
    .style-grid { grid-template-columns: repeat(2, 1fr); }
    .nav-tabs { margin-left: 16px; }
}