:root{--ink:#172033;--muted:#6c788c;--line:#e1e7f0;--paper:#fff;--bg:#f4f7fb;--purple:#6941c6;--green:#148065;--blue:#2864dc;--rose:#c9395c;--amber:#e49320}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:'DM Sans',system-ui,sans-serif}.login-page{min-height:100vh;display:grid;place-items:center;background:radial-gradient(circle at 20% 10%,#e9ddff,transparent 35%),radial-gradient(circle at 90% 85%,#d8f5ea,transparent 35%),var(--bg);padding:18px}.login-card{width:min(480px,100%);background:#fff;padding:36px;border-radius:28px;box-shadow:0 30px 90px #15233c28}.brand{display:flex;align-items:center;gap:12px;font:900 .85rem 'Manrope',sans-serif;letter-spacing:.08em;color:var(--purple)}.brand-mark{display:grid;place-items:center;width:42px;height:42px;border-radius:14px;background:linear-gradient(135deg,var(--purple),#3e67db);color:#fff}.login-card h1{font:800 2.3rem 'Manrope',sans-serif;letter-spacing:-.04em;margin:25px 0 8px}.muted{color:var(--muted)}.field{display:grid;gap:7px;margin:14px 0}.field span{font-weight:800;font-size:.83rem}.field input,.field select,.field textarea{width:100%;border:1px solid #ccd5e2;border-radius:12px;padding:12px 13px;font:inherit;background:#fbfcfe}.field input:focus,.field select:focus,.field textarea:focus{outline:0;border-color:var(--purple);box-shadow:0 0 0 4px #6941c618}.btn{border:0;border-radius:11px;padding:11px 14px;font:800 .86rem 'Manrope',sans-serif;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:7px}.btn-primary{background:var(--purple);color:#fff}.btn-soft{background:#edf1f6;color:#2c3950}.btn-green{background:#e3f5ef;color:#0c6a50}.btn-warn{background:#fff1dd;color:#9b5900}.btn-danger{background:#fee9ee;color:#a92243}.btn-block{width:100%;padding:14px}.alert{padding:12px 14px;border-radius:12px;margin:14px 0;font-weight:700}.alert-error{background:#ffedef;color:#9c2541}.alert-ok{background:#e4f7f0;color:#11664f}.panel-layout{display:grid;grid-template-columns:250px 1fr;min-height:100vh}.sidebar{position:sticky;top:0;height:100vh;background:#172033;color:#fff;padding:24px 16px;display:flex;flex-direction:column}.sidebar .brand{color:#fff}.side-nav{display:grid;gap:7px;margin-top:32px}.side-nav a{display:flex;align-items:center;gap:11px;color:#aeb9cc;text-decoration:none;padding:12px 13px;border-radius:12px;font-weight:700}.side-nav a:hover,.side-nav a.active{background:#ffffff12;color:#fff}.side-nav a i{width:20px;text-align:center}.side-footer{margin-top:auto}.main{min-width:0;padding:28px}.topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:26px}.topbar h1{font:800 clamp(1.7rem,3vw,2.5rem) 'Manrope',sans-serif;margin:0}.mobile-menu{display:none}.stats{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}.stat{background:#fff;border:1px solid var(--line);padding:18px;border-radius:18px;box-shadow:0 10px 30px #1d2b4210}.stat i{display:grid;place-items:center;width:38px;height:38px;border-radius:12px;background:#f0ebfb;color:var(--purple);margin-bottom:15px}.stat strong{font:900 1.6rem 'Manrope',sans-serif;display:block}.stat span{font-size:.82rem;color:var(--muted)}.panel-section{margin-top:24px;background:#fff;border:1px solid var(--line);border-radius:21px;box-shadow:0 12px 35px #1d2b4210;overflow:hidden}.section-head{padding:20px 22px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:15px}.section-head h2{font:800 1.25rem 'Manrope',sans-serif;margin:0}.section-body{padding:20px}.table-wrap{overflow:auto}.table{width:100%;border-collapse:collapse;min-width:850px}.table th{font-size:.73rem;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);text-align:left;padding:11px;border-bottom:1px solid var(--line)}.table td{padding:12px 11px;border-bottom:1px solid #eef1f5;vertical-align:middle}.table tr:last-child td{border-bottom:0}.student-name{font-weight:800}.code{font:800 .9rem monospace;background:#eef2f7;padding:5px 7px;border-radius:7px}.badge{display:inline-flex;padding:6px 9px;border-radius:999px;font-size:.73rem;font-weight:900}.pending{background:#fff2d9;color:#8a5600}.active{background:#e3f5ef;color:#0d684f}.disabled{background:#f1f2f5;color:#6b7280}.actions{display:flex;gap:6px;flex-wrap:wrap}.inline{display:inline}.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.field.full{grid-column:1/-1}.check-row{display:flex;gap:16px;align-items:center;flex-wrap:wrap}.check{display:flex;gap:8px;align-items:center}.book-admin-grid{display:grid;grid-template-columns:minmax(320px,.8fr) minmax(0,1.2fr);gap:20px}.book-list{display:grid;gap:11px}.book-row{display:grid;grid-template-columns:55px 1fr auto;gap:12px;align-items:center;padding:11px;border:1px solid var(--line);border-radius:14px}.thumb{width:55px;height:70px;border-radius:8px;background:linear-gradient(135deg,#196b5d,#7043c2);object-fit:cover}.book-row h3{font:800 .95rem 'Manrope',sans-serif;margin:0}.book-row p{color:var(--muted);font-size:.78rem;margin:4px 0}.progress-bar{height:7px;border-radius:99px;background:#e7ecf3;overflow:hidden}.progress-bar span{display:block;height:100%;background:linear-gradient(90deg,var(--green),#40bd93)}.request{padding:14px;border:1px solid var(--line);border-radius:14px;margin-bottom:10px}.request p{margin:5px 0}.danger-zone{border-color:#f4cbd4}.empty{padding:26px;text-align:center;color:var(--muted);background:#f8fafc;border-radius:14px}@media(max-width:1100px){.stats{grid-template-columns:repeat(3,1fr)}.book-admin-grid{grid-template-columns:1fr}}@media(max-width:800px){.panel-layout{grid-template-columns:1fr}.sidebar{position:fixed;left:-270px;z-index:100;width:250px;transition:.25s}.sidebar.open{left:0}.main{padding:18px}.mobile-menu{display:inline-flex}.stats{grid-template-columns:1fr 1fr}.topbar{align-items:flex-start}.form-grid{grid-template-columns:1fr}.field.full{grid-column:auto}}@media(max-width:430px){.stats{grid-template-columns:1fr 1fr}.stat{padding:14px}.section-body{padding:14px}.section-head{padding:16px}}