:root{--navy:#0d1b2a;--orange:#ff7a00;--paper:#f4f6f8;--text:#172033;--muted:#667085}*{box-sizing:border-box}body{margin:0;font-family:Arial,sans-serif;background:var(--paper);color:var(--text)}a{text-decoration:none;color:inherit}.admin-shell{min-height:100vh;display:grid;grid-template-columns:240px 1fr}aside{background:var(--navy);color:#fff;padding:26px 20px}.admin-brand{font-weight:800;font-size:22px;margin-bottom:28px}.admin-brand span{color:var(--orange)}nav{display:grid;gap:8px}nav a{padding:12px;border-radius:8px}nav a:hover{background:rgba(255,255,255,.08)}main{padding:30px}.admin-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.card,.panel{background:#fff;border-radius:14px;padding:22px;box-shadow:0 8px 24px rgba(13,27,42,.07)}.card strong{font-size:30px;display:block}.card span{color:var(--muted)}.panel{margin-top:22px}table{width:100%;border-collapse:collapse}th,td{padding:12px;text-align:left;border-bottom:1px solid #edf0f3}.button{display:inline-block;background:var(--orange);color:white;border:0;border-radius:8px;padding:11px 16px;font-weight:700;cursor:pointer}.form-grid{display:grid;gap:14px}.field{display:grid;gap:6px}input,select,textarea{padding:12px;border:1px solid #d9dee5;border-radius:8px;font:inherit}.login{min-height:100vh;display:grid;place-items:center;padding:20px}.login-box{width:min(420px,100%);background:#fff;padding:30px;border-radius:16px;box-shadow:0 18px 50px rgba(13,27,42,.12)}.notice{padding:12px;border-radius:8px;background:#fff4e8;color:#8a4300}@media(max-width:850px){.admin-shell{grid-template-columns:1fr}.grid{grid-template-columns:1fr 1fr}}@media(max-width:520px){main{padding:18px}.grid{grid-template-columns:1fr}}