:root {
  --primary: #b91c1c;
  --primary-dark: #7f1d1d;
  --bg: #f5f6f8;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --border: #e5e7eb;
  --green: #16a34a;
  --yellow: #ca8a04;
  --red: #dc2626;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: 'Segoe UI', Roboto, Arial, sans-serif; background: var(--bg); color: var(--text); }
.hidden { display: none !important; }

/* Login */
.login-screen { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, #7f1d1d, #b91c1c); }
.login-box { background: #fff; padding: 40px; border-radius: 12px; width: 340px; box-shadow: 0 10px 40px rgba(0,0,0,.2); text-align: center; }
.login-box h1 { margin: 0 0 4px; font-size: 22px; color: var(--primary-dark); }
.login-box .sub { color: var(--muted); margin-bottom: 20px; font-size: 13px; }
.login-box form { display: flex; flex-direction: column; gap: 10px; }
.login-box input { padding: 10px 12px; border: 1px solid var(--border); border-radius: 6px; font-size: 14px; }
.login-box button { padding: 10px; border: none; background: var(--primary); color: #fff; border-radius: 6px; cursor: pointer; font-size: 14px; font-weight: 600; }
.login-box button:hover { background: var(--primary-dark); }
.login-box .error { color: var(--red); font-size: 13px; margin-top: 10px; min-height: 16px; }
.login-box .hint { margin-top: 16px; font-size: 11px; color: var(--muted); line-height: 1.5; }

/* App layout */
.app { display: flex; min-height: 100vh; }
.sidebar { width: 230px; background: var(--primary-dark); color: #fff; display: flex; flex-direction: column; padding: 16px 0; flex-shrink: 0; }
.brand { font-size: 16px; font-weight: 700; padding: 0 16px 16px; border-bottom: 1px solid rgba(255,255,255,.15); }
#nav { flex: 1; padding: 12px 0; overflow-y: auto; }
#nav a { display: block; padding: 10px 16px; color: #f3f4f6; text-decoration: none; font-size: 14px; cursor: pointer; border-left: 3px solid transparent; }
#nav a:hover { background: rgba(255,255,255,.08); }
#nav a.active { background: rgba(255,255,255,.15); border-left-color: #fff; font-weight: 600; }
.user-box { padding: 12px 16px; border-top: 1px solid rgba(255,255,255,.15); font-size: 13px; }
#user-name { font-weight: 600; }
.role-badge { font-size: 11px; opacity: .8; margin-bottom: 8px; }
#logout-btn { width: 100%; padding: 6px; background: rgba(255,255,255,.15); border: none; color: #fff; border-radius: 4px; cursor: pointer; }
#logout-btn:hover { background: rgba(255,255,255,.25); }

.content { flex: 1; padding: 24px; overflow-x: auto; }
h2.page-title { margin: 0 0 16px; font-size: 20px; color: var(--primary-dark); }

/* Cards & grid */
.grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); margin-bottom: 20px; }
.card { background: var(--card); border-radius: 10px; padding: 16px; box-shadow: 0 1px 3px rgba(0,0,0,.08); }
.card .label { font-size: 12px; color: var(--muted); margin-bottom: 6px; }
.card .value { font-size: 20px; font-weight: 700; color: var(--primary-dark); }
.card .sub-value { font-size: 11px; color: var(--muted); margin-top: 4px; }

.panel { background: var(--card); border-radius: 10px; padding: 16px; margin-bottom: 20px; box-shadow: 0 1px 3px rgba(0,0,0,.08); }
.panel h3 { margin: 0 0 12px; font-size: 15px; color: var(--primary-dark); }

table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { padding: 8px 10px; border-bottom: 1px solid var(--border); text-align: left; }
th { background: #f9fafb; color: var(--muted); font-weight: 600; font-size: 12px; }
tr:hover td { background: #fafafa; }

.badge { display: inline-block; padding: 2px 8px; border-radius: 12px; font-size: 11px; font-weight: 600; color: #fff; }
.badge.green { background: var(--green); }
.badge.yellow { background: var(--yellow); }
.badge.red { background: var(--red); }
.badge.gray { background: #9ca3af; }

.toolbar { display: flex; gap: 10px; margin-bottom: 14px; flex-wrap: wrap; align-items: center; }
.toolbar input, .toolbar select { padding: 7px 10px; border: 1px solid var(--border); border-radius: 6px; font-size: 13px; }
button.btn { padding: 7px 14px; background: var(--primary); color: #fff; border: none; border-radius: 6px; cursor: pointer; font-size: 13px; font-weight: 600; }
button.btn:hover { background: var(--primary-dark); }
button.btn.secondary { background: #6b7280; }
button.btn.small { padding: 4px 10px; font-size: 12px; }
button.btn.green { background: var(--green); }
button.btn.red { background: var(--red); }

.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,.4); display: flex; align-items: center; justify-content: center; z-index: 100; }
.modal { background: #fff; border-radius: 10px; padding: 20px; width: 420px; max-height: 85vh; overflow-y: auto; }
.modal h3 { margin-top: 0; }
.modal form { display: flex; flex-direction: column; gap: 10px; }
.modal label { font-size: 12px; color: var(--muted); margin-bottom: -6px; }
.modal input, .modal select, .modal textarea { padding: 8px 10px; border: 1px solid var(--border); border-radius: 6px; font-size: 13px; width: 100%; }
.modal .modal-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 10px; }

.note { font-size: 12px; color: var(--muted); background: #f9fafb; padding: 10px; border-radius: 6px; margin-bottom: 14px; }
.tabs { display: flex; gap: 4px; margin-bottom: 14px; border-bottom: 1px solid var(--border); }
.tabs button { padding: 8px 14px; border: none; background: none; cursor: pointer; font-size: 13px; color: var(--muted); border-bottom: 2px solid transparent; }
.tabs button.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 600; }
.toast { position: fixed; bottom: 20px; right: 20px; background: var(--text); color: #fff; padding: 10px 16px; border-radius: 6px; font-size: 13px; z-index: 200; }