:root{--bg:#f6f8fb;--card:#fff;--accent:#2b6cb0 }*{box-sizing:border-box}body,html,#root{height:100%;margin:0;font-family:Inter,system-ui,Arial}.app-root{display:flex}nav.sidebar{width:220px;background:var(--card);border-right:1px solid #e6e9ef;min-height:100vh;padding:16px}nav.sidebar h1{font-size:18px;margin:0 0 12px}nav.sidebar a{display:block;padding:8px 10px;color:#333;text-decoration:none;border-radius:6px;margin-bottom:6px}nav.sidebar a.active,nav.sidebar a:hover{background:#eef6ff;color:var(--accent)}.main-area{padding:24px;width:100%;background:var(--bg);min-height:100vh}.card{background:var(--card);padding:16px;border-radius:8px;box-shadow:0 1px 3px #1212120a;margin-bottom:16px}.table{width:100%;border-collapse:collapse}.table th,.table td{text-align:left;padding:8px;border-bottom:1px solid #f0f2f6}.btn{display:inline-block;padding:8px 12px;background:var(--accent);color:#fff;border-radius:6px;text-decoration:none}.form-row{margin-bottom:12px}label{display:block;margin-bottom:6px;color:#333}input,select,textarea{width:100%;padding:8px;border:1px solid #e6e9ef;border-radius:6px}.header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}@media (max-width:760px){nav.sidebar{display:none}}