:root{--blue:#063b78;--red:#c91f28;--bg:#f4f7fb;--line:#e2e8f0;--text:#1e293b}*{box-sizing:border-box}body{margin:0;font-family:Arial,sans-serif;background:var(--bg);color:var(--text)}a{text-decoration:none;color:inherit}.admin-shell{display:grid;grid-template-columns:260px 1fr;min-height:100vh}.admin-sidebar{background:#062d5f;color:#fff;padding:20px;position:sticky;top:0;height:100vh;overflow:auto}.admin-brand{text-align:center;border-bottom:1px solid rgba(255,255,255,.15);padding-bottom:18px;margin-bottom:18px}.admin-brand img{width:84px;height:84px;object-fit:contain;display:block;margin:0 auto 8px}.admin-brand strong,.admin-brand span{display:block}.admin-brand span{font-size:13px;color:#cbd5e1;margin-top:4px}.admin-sidebar nav a{display:block;padding:12px 14px;border-radius:10px;margin:5px 0;color:#eaf2ff;font-weight:700}.admin-sidebar nav a:hover{background:rgba(255,255,255,.12)}.admin-main{padding:24px}.admin-top{background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px 22px;margin-bottom:20px}.admin-top h1{margin:0;color:var(--blue)}.panel{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px;margin-bottom:20px;box-shadow:0 10px 24px rgba(15,23,42,.06)}.btn{display:inline-block;background:var(--blue);color:#fff;padding:9px 14px;border-radius:9px;border:0;font-weight:700;cursor:pointer}.btn.red{background:var(--red)}.btn.gray{background:#64748b}.table{width:100%;border-collapse:collapse}.table th,.table td{border-bottom:1px solid var(--line);padding:12px;text-align:left;vertical-align:top}.table th{background:#f8fafc;color:#334155}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.form-control{width:100%;border:1px solid #cbd5e1;border-radius:10px;padding:10px 12px;margin:6px 0 14px}.form-control[type=file]{padding:8px}.label{font-weight:700;color:#334155}.thumb{width:90px;height:58px;object-fit:cover;border-radius:8px;border:1px solid var(--line)}.alert{padding:12px 14px;border-radius:10px;margin:12px 0}.success{background:#dcfce7;color:#166534}.error{background:#fee2e2;color:#991b1b}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.stat{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px}.stat strong{display:block;font-size:32px;color:var(--blue)}.small{font-size:13px;color:#64748b}@media(max-width:900px){.admin-shell{grid-template-columns:1fr}.admin-sidebar{position:relative;height:auto}.form-grid,.stats{grid-template-columns:1fr}.admin-main{padding:14px}.table{display:block;overflow:auto}}