:root {
  --bg: #0f0f0f;
  --surface: #1a1a1a;
  --surface2: #242424;
  --border: #2e2e2e;
  --accent: #f5c842;
  --accent2: #ff6b35;
  --text: #f0ece4;
  --muted: #888;
  --danger: #ff4444;
  --success: #44cc88;
  --radius: 12px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'DM Sans', sans-serif; background: var(--bg); color: var(--text); min-height: 100vh; }

/* AUTH */
#auth-screen { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: radial-gradient(ellipse at 30% 50%, #1e1a0a 0%, #0f0f0f 60%); }
.auth-box { background: var(--surface); border: 1px solid var(--border); border-radius: 20px; padding: 48px; width: 100%; max-width: 400px; box-shadow: 0 40px 80px rgba(0,0,0,0.6); }
.auth-logo { font-family: 'Syne', sans-serif; font-weight: 800; font-size: 28px; color: var(--accent); letter-spacing: -0.5px; margin-bottom: 6px; }
.auth-logo span { color: var(--text); }
.auth-sub { color: var(--muted); font-size: 13px; margin-bottom: 36px; line-height: 1.5; }
.auth-tabs { display: flex; gap: 4px; margin-bottom: 28px; background: var(--bg); border-radius: 8px; padding: 4px; }
.auth-tab { flex: 1; padding: 8px; border: none; border-radius: 6px; background: transparent; color: var(--muted); font-family: 'DM Sans', sans-serif; font-size: 14px; font-weight: 500; cursor: pointer; transition: all 0.2s; }
.auth-tab.active { background: var(--surface2); color: var(--text); }
.auth-err { color: var(--danger); font-size: 13px; margin-top: 12px; text-align: center; min-height: 20px; }

/* FIELDS */
.field { margin-bottom: 18px; }
.field label { display: block; font-size: 12px; font-weight: 500; color: var(--muted); text-transform: uppercase; letter-spacing: 0.8px; margin-bottom: 8px; }
.field input { width: 100%; padding: 12px 16px; background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); color: var(--text); font-family: 'DM Sans', sans-serif; font-size: 15px; outline: none; transition: border-color 0.2s; }
.field input:focus { border-color: var(--accent); }

/* BUTTONS */
.btn-primary { width: 100%; padding: 14px; background: var(--accent); color: #0f0f0f; border: none; border-radius: var(--radius); font-family: 'Syne', sans-serif; font-size: 15px; font-weight: 700; cursor: pointer; transition: opacity 0.2s; }
.btn-primary:hover { opacity: 0.88; }
.btn-cancel { flex: 1; padding: 12px; background: transparent; border: 1px solid var(--border); border-radius: var(--radius); color: var(--muted); font-family: 'DM Sans', sans-serif; font-size: 14px; cursor: pointer; }
.btn-save { flex: 2; padding: 12px; background: var(--accent); color: #0f0f0f; border: none; border-radius: var(--radius); font-family: 'Syne', sans-serif; font-size: 14px; font-weight: 700; cursor: pointer; }
.btn-add { padding: 10px 22px; background: var(--accent); color: #0f0f0f; border: none; border-radius: var(--radius); font-family: 'Syne', sans-serif; font-size: 14px; font-weight: 700; cursor: pointer; white-space: nowrap; }
.btn-add:hover { opacity: 0.88; }
.btn-logout { padding: 7px 16px; border: 1px solid var(--border); border-radius: var(--radius); background: transparent; color: var(--muted); font-size: 13px; cursor: pointer; font-family: 'DM Sans', sans-serif; transition: all 0.2s; }
.btn-logout:hover { border-color: var(--danger); color: var(--danger); }

/* TOPBAR */
.topbar { display: flex; align-items: center; justify-content: space-between; padding: 0 32px; height: 64px; background: var(--surface); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 100; gap: 16px; }
.topbar-logo { font-family: 'Syne', sans-serif; font-weight: 800; font-size: 20px; color: var(--accent); white-space: nowrap; }
.topbar-logo span { color: var(--text); }
.topbar-nav { display: flex; gap: 4px; }
.nav-btn { padding: 7px 16px; border: 1px solid transparent; border-radius: 8px; background: transparent; color: var(--muted); font-family: 'DM Sans', sans-serif; font-size: 14px; cursor: pointer; transition: all 0.2s; }
.nav-btn:hover { color: var(--text); }
.nav-btn.active { background: var(--surface2); border-color: var(--border); color: var(--text); }
.topbar-right { display: flex; align-items: center; gap: 12px; }
.user-pill { background: var(--surface2); border: 1px solid var(--border); border-radius: 99px; padding: 6px 14px; font-size: 13px; color: var(--muted); white-space: nowrap; }
.user-pill strong { color: var(--text); }

/* MAIN */
.main-content { padding: 32px; max-width: 1200px; margin: 0 auto; }
.banner { padding: 12px 20px; border-radius: var(--radius); margin-bottom: 24px; font-size: 14px; }
.banner.warn { background: rgba(255,107,53,0.12); border: 1px solid rgba(255,107,53,0.3); color: var(--accent2); }
.banner a { color: var(--accent); text-decoration: none; font-weight: 500; }

/* STATS */
.stats-bar { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-bottom: 32px; }
.stat-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px 24px; }
.stat-label { font-size: 12px; text-transform: uppercase; letter-spacing: 0.8px; color: var(--muted); margin-bottom: 6px; }
.stat-value { font-family: 'Syne', sans-serif; font-size: 28px; font-weight: 800; }
.stat-value.accent { color: var(--accent); }
.stat-value.warn { color: var(--accent2); }

/* TOOLBAR */
.toolbar { display: flex; align-items: center; justify-content: space-between; margin-bottom: 24px; gap: 16px; flex-wrap: wrap; }
.search-wrap { position: relative; flex: 1; min-width: 220px; }
.search-wrap input { width: 100%; padding: 10px 16px 10px 40px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); color: var(--text); font-family: 'DM Sans', sans-serif; font-size: 14px; outline: none; transition: border-color 0.2s; }
.search-wrap input:focus { border-color: var(--accent); }
.search-wrap::before { content: '⌕'; position: absolute; left: 14px; top: 50%; transform: translateY(-50%); color: var(--muted); font-size: 18px; pointer-events: none; }

/* GRID */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 20px; }
.product-card { background: var(--surface); border: 1px solid var(--border); border-radius: 16px; overflow: hidden; transition: transform 0.2s, box-shadow 0.2s; }
.product-card:hover { transform: translateY(-3px); box-shadow: 0 16px 40px rgba(0,0,0,0.4); }
.product-img { width: 100%; height: 180px; object-fit: cover; background: var(--surface2); display: flex; align-items: center; justify-content: center; color: var(--muted); overflow: hidden; }
.product-img img { width: 100%; height: 100%; object-fit: cover; }
.product-body { padding: 16px; }
.product-name { font-family: 'Syne', sans-serif; font-weight: 700; font-size: 16px; margin-bottom: 4px; }
.product-cat { font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.6px; margin-bottom: 10px; }
.product-row { display: flex; align-items: center; justify-content: space-between; }
.product-price { font-family: 'Syne', sans-serif; font-size: 18px; font-weight: 800; color: var(--accent); }
.product-stock { font-size: 12px; font-weight: 500; padding: 3px 10px; border-radius: 99px; }
.stock-ok { background: rgba(68,204,136,0.15); color: var(--success); }
.stock-low { background: rgba(255,107,53,0.15); color: var(--accent2); }
.stock-out { background: rgba(255,68,68,0.15); color: var(--danger); }
.card-actions { display: flex; gap: 8px; padding: 12px 16px; border-top: 1px solid var(--border); }
.btn-edit, .btn-del { flex: 1; padding: 7px; border-radius: 8px; font-size: 13px; font-family: 'DM Sans', sans-serif; font-weight: 500; cursor: pointer; border: 1px solid var(--border); background: transparent; color: var(--muted); transition: all 0.15s; }
.btn-edit:hover { border-color: var(--accent); color: var(--accent); }
.btn-del:hover { border-color: var(--danger); color: var(--danger); }
.empty-state { text-align: center; padding: 80px 20px; color: var(--muted); }
.empty-state .icon { font-size: 52px; margin-bottom: 16px; }
.empty-state p { font-size: 16px; margin-bottom: 8px; color: var(--text); font-family: 'Syne', sans-serif; font-weight: 600; }

/* MODAL */
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.75); display: flex; align-items: center; justify-content: center; z-index: 1000; padding: 20px; backdrop-filter: blur(4px); opacity: 0; pointer-events: none; transition: opacity 0.2s; }
.modal-overlay.open { opacity: 1; pointer-events: all; }
.modal { background: var(--surface); border: 1px solid var(--border); border-radius: 20px; padding: 36px; width: 100%; max-width: 480px; transform: translateY(20px); transition: transform 0.25s; max-height: 90vh; overflow-y: auto; }
.modal-overlay.open .modal { transform: translateY(0); }
.modal-title { font-family: 'Syne', sans-serif; font-weight: 800; font-size: 22px; margin-bottom: 28px; }
.modal-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.modal-grid .full { grid-column: 1 / -1; }
.modal-actions { display: flex; gap: 12px; margin-top: 28px; }

/* SETTINGS */
.settings-card { background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 32px; }
.settings-card h2 { font-family: 'Syne', sans-serif; font-weight: 800; font-size: 20px; margin-bottom: 10px; }
.settings-desc { color: var(--muted); font-size: 14px; line-height: 1.7; margin-bottom: 24px; }
.service-email-box { background: var(--surface2); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px 20px; display: flex; align-items: center; gap: 16px; margin-bottom: 24px; flex-wrap: wrap; }
.se-label { font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.6px; flex: 100%; }
.se-email { font-family: monospace; font-size: 14px; color: var(--accent); flex: 1; word-break: break-all; }
.btn-copy { padding: 6px 16px; border: 1px solid var(--border); border-radius: 8px; background: transparent; color: var(--muted); font-size: 13px; cursor: pointer; transition: all 0.2s; white-space: nowrap; }
.btn-copy:hover { border-color: var(--accent); color: var(--accent); }
.steps { display: flex; flex-direction: column; gap: 12px; margin-bottom: 8px; }
.step { display: flex; gap: 14px; align-items: flex-start; font-size: 14px; color: var(--muted); line-height: 1.6; }
.step span { background: var(--accent); color: #0f0f0f; width: 24px; height: 24px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 12px; flex-shrink: 0; margin-top: 2px; }
.step code { background: var(--surface2); padding: 1px 6px; border-radius: 4px; font-size: 12px; color: var(--text); }
.step strong { color: var(--text); }
.info-row { display: flex; justify-content: space-between; align-items: center; padding: 12px 0; border-bottom: 1px solid var(--border); font-size: 14px; color: var(--muted); }
.info-row:last-child { border-bottom: none; }
.info-row strong { color: var(--text); }

/* ADMIN TABLE */
.admin-table { width: 100%; border-collapse: collapse; font-size: 14px; margin-top: 16px; }
.admin-table th { text-align: left; padding: 10px 14px; color: var(--muted); font-weight: 500; border-bottom: 1px solid var(--border); font-size: 12px; text-transform: uppercase; letter-spacing: 0.6px; }
.admin-table td { padding: 12px 14px; border-bottom: 1px solid var(--border); color: var(--text); }
.admin-table tr:last-child td { border-bottom: none; }
.btn-del-user { padding: 4px 12px; background: transparent; border: 1px solid var(--border); border-radius: 6px; color: var(--muted); font-size: 12px; cursor: pointer; transition: all 0.15s; }
.btn-del-user:hover { border-color: var(--danger); color: var(--danger); }
.badge-linked { color: var(--success); font-size: 12px; }
.badge-unlinked { color: var(--muted); font-size: 12px; }

/* TOAST */
#toast { position: fixed; bottom: 24px; right: 24px; background: var(--surface2); border: 1px solid var(--border); border-radius: 10px; padding: 12px 20px; font-size: 14px; z-index: 9999; transform: translateY(80px); opacity: 0; transition: all 0.3s; max-width: 300px; }
#toast.show { transform: translateY(0); opacity: 1; }
#toast.success { border-color: var(--success); color: var(--success); }
#toast.error { border-color: var(--danger); color: var(--danger); }
#toast.info { border-color: var(--accent); color: var(--accent); }

/* LOADER */
#loader { position: fixed; inset: 0; background: rgba(0,0,0,0.5); display: flex; align-items: center; justify-content: center; z-index: 9998; }
.loader-inner { width: 40px; height: 40px; border: 3px solid var(--border); border-top-color: var(--accent); border-radius: 50%; animation: spin 0.7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

@media (max-width: 700px) {
  .topbar { padding: 0 16px; }
  .topbar-nav { display: none; }
  .main-content { padding: 16px; }
  .stats-bar { grid-template-columns: 1fr; }
  .modal { padding: 24px; }
  .modal-grid { grid-template-columns: 1fr; }
  .modal-grid .full { grid-column: 1; }
}