:root{--color-bg: #f5f7fa;--color-surface: #ffffff;--color-text: #111827;--color-muted: #6b7280;--color-border: #e5e7eb;--color-primary: #0a66ff;--color-primary-hover: #0850c8;--color-danger: #dc2626;--color-success: #16a34a;--radius: 8px;--shadow: 0 1px 3px rgba(0, 0, 0, .05), 0 1px 2px rgba(0, 0, 0, .03)}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--color-bg);color:var(--color-text);line-height:1.5}a{color:var(--color-primary);text-decoration:none}a:hover{text-decoration:underline}button{font:inherit;cursor:pointer;border:none;background:var(--color-primary);color:#fff;padding:10px 16px;border-radius:var(--radius);font-weight:500}button:hover{background:var(--color-primary-hover)}button:disabled{opacity:.5;cursor:not-allowed}button.secondary{background:var(--color-surface);color:var(--color-text);border:1px solid var(--color-border)}button.secondary:hover{background:var(--color-bg)}button.danger{background:var(--color-danger)}input,textarea,select{font:inherit;width:100%;padding:10px 12px;border:1px solid var(--color-border);border-radius:var(--radius);background:var(--color-surface)}input:focus,textarea:focus,select:focus{outline:2px solid var(--color-primary);outline-offset:-1px;border-color:var(--color-primary)}label{display:block;font-size:14px;font-weight:500;margin-bottom:6px;color:var(--color-text)}.field{margin-bottom:16px}.field-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}.card{background:var(--color-surface);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px}.container{max-width:720px;margin:40px auto;padding:0 16px}.admin-shell{display:grid;grid-template-columns:220px 1fr;min-height:100vh}.admin-sidebar{background:var(--color-surface);border-right:1px solid var(--color-border);padding:24px 16px;position:relative}.admin-sidebar h2{margin:0 0 24px;font-size:18px}.admin-sidebar nav a{display:block;padding:8px 12px;border-radius:var(--radius);color:var(--color-text);margin-bottom:4px}.admin-sidebar nav a.active,.admin-sidebar nav a:hover{background:var(--color-bg);text-decoration:none}.admin-content{padding:32px}table{width:100%;border-collapse:collapse;background:var(--color-surface);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}th,td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--color-border)}th{font-size:13px;color:var(--color-muted);font-weight:600;text-transform:uppercase}tr:last-child td{border-bottom:none}.alert{padding:12px 16px;border-radius:var(--radius);margin-bottom:16px}.alert-error{background:#fef2f2;color:var(--color-danger)}.alert-success{background:#f0fdf4;color:var(--color-success)}.muted{color:var(--color-muted);font-size:14px}.autocomplete{position:relative}.autocomplete-list{position:absolute;top:100%;left:0;right:0;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);box-shadow:var(--shadow);max-height:240px;overflow-y:auto;z-index:10}.autocomplete-list li{padding:10px 12px;cursor:pointer;list-style:none}.autocomplete-list li:hover{background:var(--color-bg)}