:root{--ink:#1c2733;--ink-soft:#5a6b7d;--paper:#f7f8f9;--card:#ffffff;--line:#e3e8ee;--accent:#c47f17;--accent-soft:#fdf3e0;--ok:#1e7f4f;--ok-soft:#e3f4ea;--warn:#b3261e;--warn-soft:#fbe9e7;--radius:8px}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,Segoe UI,Roboto,Helvetica Neue,sans-serif;background:var(--paper);color:var(--ink);font-size:15px;line-height:1.5}a{color:inherit}.shell{display:flex;min-height:100vh}.sidebar{width:220px;background:var(--ink);color:#fff;padding:20px 14px;flex-shrink:0;display:flex;flex-direction:column}.sidebar .brand{font-weight:700;font-size:17px;letter-spacing:.2px;margin-bottom:4px}.sidebar .hostel-slug{font-size:12px;color:#9fb0c1;margin-bottom:24px}.sidebar nav a{display:block;padding:9px 12px;border-radius:var(--radius);color:#cdd8e3;text-decoration:none;margin-bottom:4px;font-size:14px}.sidebar nav a:hover{background:rgba(255,255,255,.08);color:#fff}.sidebar nav a.active{background:var(--accent);color:#fff;font-weight:600}.sidebar .foot{margin-top:auto;font-size:12px;color:#9fb0c1}.sidebar .foot button{background:none;border:1px solid #44546a;color:#cdd8e3;border-radius:var(--radius);padding:6px 10px;cursor:pointer;font-size:12px}.main{flex:1 1;padding:28px 32px;max-width:1100px}.page-title{font-size:22px;font-weight:700;margin:0 0 4px}.page-sub{color:var(--ink-soft);margin:0 0 24px;font-size:14px}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px;margin-bottom:20px}.card h2{font-size:15px;margin:0 0 12px;font-weight:600}table{width:100%;border-collapse:collapse;font-size:14px}th{text-align:left;color:var(--ink-soft);font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.4px;padding:8px 10px}td,th{border-bottom:1px solid var(--line)}td{padding:10px}tr:last-child td{border-bottom:none}input,select{padding:8px 10px;border:1px solid var(--line);border-radius:var(--radius);font-size:14px;background:#fff;color:var(--ink)}input:focus,select:focus{outline:2px solid var(--accent);outline-offset:1px;border-color:var(--accent)}button.primary{background:var(--accent);color:#fff;border:none;padding:9px 16px;border-radius:var(--radius);font-size:14px;font-weight:600;cursor:pointer}button.primary:hover{filter:brightness(.95)}button.ghost{background:none;border:1px solid var(--line);color:var(--ink);padding:7px 12px;border-radius:var(--radius);font-size:13px;cursor:pointer}button.ghost:hover{border-color:var(--accent);color:var(--accent)}.form-row{display:flex;gap:10px;flex-wrap:wrap;align-items:flex-end}.form-row label{display:flex;flex-direction:column;gap:4px;color:var(--ink-soft)}.badge,.form-row label{font-size:12px;font-weight:600}.badge{display:inline-block;padding:2px 10px;border-radius:999px}.badge.paid{background:var(--ok-soft);color:var(--ok)}.badge.pending{background:var(--accent-soft);color:var(--accent)}.badge.overdue{background:var(--warn-soft);color:var(--warn)}.error-text{color:var(--warn);font-size:13px}.empty{color:var(--ink-soft);font-size:14px;padding:12px 0}.room-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));grid-gap:14px;gap:14px}.room-tile{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:14px}.room-tile .room-head{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:10px}.room-tile .room-num{font-weight:700;font-size:15px}.room-tile .room-floor{font-size:12px;color:var(--ink-soft)}.beds{display:flex;flex-wrap:wrap;gap:8px}.bed{min-width:64px;padding:8px;border-radius:var(--radius);border:1.5px solid var(--line);text-align:center;cursor:pointer;font-size:12px;background:#fff}.bed .bed-label{font-weight:700;font-size:13px}.bed .bed-guest{color:var(--ink-soft);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:90px}.bed.occupied{background:var(--accent-soft);border-color:var(--accent)}.bed.free:hover{border-color:var(--ok)}.bed.occupied:hover{border-color:var(--warn)}@media (max-width:720px){.shell{flex-direction:column}.sidebar{width:100%;flex-direction:row;align-items:center;gap:10px;padding:10px 14px}.sidebar .foot,.sidebar .hostel-slug{display:none}.sidebar nav{display:flex;gap:4px}.sidebar nav a{margin-bottom:0;padding:7px 10px}.main{padding:18px 14px}}