:root{
  --bg:#f3f5f9;
  --panel:#ffffff;
  --line:#e5e7eb;
  --line-strong:#d1d5db;
  --text:#0f172a;
  --muted:#64748b;
  --brand:#111827;
  --brand-soft:#1f2937;
  --accent:#c8a76a;
  --success:#166534;
  --success-bg:#ecfdf5;
  --danger:#b91c1c;
  --danger-bg:#fef2f2;
  --shadow:0 14px 34px rgba(15,23,42,.06);
}
*{box-sizing:border-box}
html{font-size:16px}
body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:var(--text);line-height:1.5}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
button,input,textarea,select{font:inherit}

.admin-shell{display:grid;grid-template-columns:280px minmax(0,1fr);min-height:100vh}
.admin-sidebar{background:linear-gradient(180deg,#111827 0%,#1f2937 100%);color:#fff;padding:28px 18px;position:sticky;top:0;height:100vh;border-right:1px solid rgba(255,255,255,.08)}
.admin-brand{font-size:1.55rem;font-weight:800;letter-spacing:.02em;margin-bottom:28px}
.admin-brand a{display:block;padding:10px 12px;border-radius:14px;background:rgba(255,255,255,.05)}
.admin-sidebar nav{display:flex;flex-direction:column;gap:8px}
.admin-sidebar nav a{display:flex;align-items:center;gap:10px;padding:13px 14px;border-radius:14px;color:#e5e7eb;transition:.18s ease;background:transparent}
.admin-sidebar nav a:hover{background:rgba(255,255,255,.08);transform:translateX(2px)}
.admin-sidebar nav a i{width:18px;text-align:center}

.admin-main{padding:28px 28px 36px;min-width:0}
.admin-topbar{display:flex;justify-content:space-between;gap:20px;align-items:flex-start;margin-bottom:24px}
.admin-topbar h1{margin:0 0 6px;font-size:2rem;line-height:1.1}
.admin-topbar p{margin:0;color:var(--muted)}
.admin-user{background:var(--panel);padding:12px 14px;border-radius:14px;border:1px solid var(--line);box-shadow:var(--shadow)}

.panel,.stat-card{background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:22px;box-shadow:var(--shadow)}
.panel h3{margin:0 0 12px;font-size:1.1rem}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px}
.stat-card h3{margin:0 0 8px;font-size:.9rem;color:var(--muted);text-transform:uppercase;letter-spacing:.04em}
.stat-card strong{font-size:2.2rem;line-height:1.05}

.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:16px}
.table{width:100%;border-collapse:collapse;background:#fff}
.table th,.table td{padding:14px 16px;border-bottom:1px solid var(--line);vertical-align:top;text-align:left}
.table th{font-size:.78rem;text-transform:uppercase;color:var(--muted);letter-spacing:.05em;background:#f8fafc;position:sticky;top:0}
.table tbody tr:hover{background:#fafafa}
.table tbody tr:last-child td{border-bottom:none}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 15px;border-radius:12px;border:1px solid var(--line-strong);background:#fff;cursor:pointer;min-height:44px;transition:.16s ease;font-weight:600}
.btn:hover{transform:translateY(-1px);box-shadow:0 8px 18px rgba(15,23,42,.08)}
.btn-primary{background:var(--brand);color:#fff;border-color:var(--brand)}
.btn-primary:hover{background:var(--brand-soft)}
.btn-danger{background:var(--danger-bg);color:var(--danger);border-color:#fecaca}
.actions{display:flex;gap:10px;flex-wrap:wrap}

.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.field{display:flex;flex-direction:column;gap:8px;min-width:0}
.field label{font-weight:700;font-size:.96rem}
.field input,.field textarea,.field select{width:100%;padding:12px 14px;border-radius:12px;border:1px solid var(--line-strong);background:#fff;outline:none;transition:border-color .15s ease, box-shadow .15s ease}
.field input:focus,.field textarea:focus,.field select:focus{border-color:#94a3b8;box-shadow:0 0 0 4px rgba(148,163,184,.18)}
.field textarea{min-height:148px;resize:vertical}
.field.full{grid-column:1/-1}
.help{color:var(--muted);font-size:.82rem}

.flash{padding:14px 16px;border-radius:14px;margin-bottom:20px;border:1px solid transparent}
.flash-success{background:var(--success-bg);color:var(--success);border-color:#bbf7d0}
.flash-error{background:var(--danger-bg);color:var(--danger);border-color:#fecaca}

.thumb{width:96px;height:72px;object-fit:cover;border-radius:12px;border:1px solid var(--line);background:#f8fafc}
.gallery-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px}
.gallery-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:12px;box-shadow:0 8px 20px rgba(15,23,42,.04)}
.gallery-card img{width:100%;height:200px;object-fit:cover;border-radius:12px;margin-bottom:10px;background:#f8fafc}

.login-wrap{min-height:100vh;display:grid;place-items:center;padding:24px;background:radial-gradient(circle at top,#374151 0%,#111827 50%,#0b1220 100%)}
.login-card{width:min(100%,440px);background:#fff;padding:34px;border-radius:24px;box-shadow:0 28px 80px rgba(0,0,0,.28);border:1px solid rgba(255,255,255,.7)}
.login-card h1{margin:0 0 8px;font-size:1.9rem}
.login-card p{margin:0 0 18px;color:var(--muted)}

@media (max-width: 1024px){
  .admin-shell{grid-template-columns:1fr}
  .admin-sidebar{position:relative;height:auto}
}
@media (max-width: 768px){
  .admin-main{padding:18px}
  .admin-topbar{flex-direction:column}
  .form-grid{grid-template-columns:1fr}
  .table th,.table td{padding:12px}
  .actions{flex-direction:column;align-items:stretch}
  .btn{width:100%}
}