:root {
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
  --bg: #f5f7fb;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --border: #e5e7eb;
  --radius: 12px;
  --shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.12);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  font-family: 'Segoe UI', Tahoma, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--primary); text-decoration: none; }

/* ---------- Loading overlay ---------- */
.loader-overlay {
  position: fixed; inset: 0; z-index: 9999;
  background: linear-gradient(135deg, #eef2ff, #f5f7fb);
  display: flex; align-items: center; justify-content: center;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}
.loader-overlay.hidden { opacity: 0; visibility: hidden; }

.loader-logo {
  width: 96px; height: 96px; object-fit: contain;
  animation: floatBounce 1.4s ease-in-out infinite;
  filter: drop-shadow(0 10px 20px rgba(99, 102, 241, 0.35));
}

@keyframes floatBounce {
  0%, 100% { transform: translateY(0) scale(1); }
  50%      { transform: translateY(-18px) scale(1.05); }
}

/* ---------- Top navbar ---------- */
.navbar {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  padding: 14px 20px;
  display: flex; align-items: center; gap: 12px;
  position: sticky; top: 0; z-index: 100;
  box-shadow: 0 4px 14px rgba(79, 70, 229, 0.25);
  flex-wrap: wrap;
}
.navbar .brand {
  display: flex; align-items: center; gap: 10px;
  font-weight: 700; font-size: 1.05rem;
}
.navbar .brand img { width: 34px; height: 34px; object-fit: contain; background: #fff; padding: 3px; border-radius: 8px; }
.navbar .user {
  margin-left: auto;
  display: flex; align-items: center; gap: 8px;
  font-size: 0.9rem;
}
.navbar .user .avatar {
  width: 32px; height: 32px; border-radius: 50%;
  background: rgba(255, 255, 255, 0.25);
  display: grid; place-items: center; font-weight: 700;
}
.navbar .logout-btn {
  background: rgba(255, 255, 255, 0.15);
  color: #fff; border: 0; padding: 6px 12px;
  border-radius: 8px; cursor: pointer; font-size: 0.85rem;
}
.navbar .logout-btn:hover { background: rgba(255, 255, 255, 0.3); }

/* ---------- Container ---------- */
.container {
  max-width: 1180px; margin: 0 auto; padding: 22px 16px 60px;
}

/* ---------- Cards ---------- */
.card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  margin-bottom: 22px;
  animation: fadeUp 0.35s ease;
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}
.card h2 { font-size: 1.15rem; margin-bottom: 16px; color: var(--primary-dark); }
.card h3 { font-size: 1rem; margin-bottom: 12px; color: var(--text); }

/* ---------- Forms ---------- */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 14px;
}
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group.full { grid-column: 1 / -1; }
.form-group label { font-size: 0.85rem; font-weight: 600; color: var(--muted); }

input, select, textarea {
  font-family: inherit;
  font-size: 0.95rem;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
  color: var(--text);
  outline: none;
  transition: border 0.15s, box-shadow 0.15s;
  width: 100%;
}
input:focus, select:focus, textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}
input:disabled, select:disabled, textarea:disabled {
  background: #f3f4f6; color: #6b7280; cursor: not-allowed;
}
textarea { resize: vertical; min-height: 70px; }

/* ---------- Buttons ---------- */
.btn {
  border: 0; cursor: pointer;
  padding: 11px 20px;
  border-radius: 10px;
  font-weight: 600; font-size: 0.95rem;
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  transition: transform 0.1s, box-shadow 0.15s, background 0.15s;
}
.btn:active { transform: scale(0.97); }
.btn-primary { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: #fff; }
.btn-primary:hover { box-shadow: 0 6px 18px rgba(99, 102, 241, 0.4); }
.btn-success { background: var(--success); color: #fff; }
.btn-danger  { background: var(--danger);  color: #fff; }
.btn-warning { background: var(--warning); color: #fff; }
.btn-ghost   { background: #f3f4f6; color: var(--text); }
.btn-block   { width: 100%; }

.btn-sm { padding: 6px 12px; font-size: 0.8rem; border-radius: 8px; }

.actions-row {
  display: flex; gap: 10px; flex-wrap: wrap;
  justify-content: flex-end; margin-top: 14px;
}

/* ---------- Tables ---------- */
.table-wrap { overflow-x: auto; border-radius: var(--radius); }
table {
  width: 100%; border-collapse: collapse;
  background: #fff; font-size: 0.9rem;
  min-width: 640px;
}
table th, table td {
  padding: 10px 12px; text-align: left;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
table th {
  background: #f8fafc; color: var(--muted);
  font-weight: 600; font-size: 0.78rem;
  text-transform: uppercase; letter-spacing: 0.03em;
}
table tbody tr:hover { background: #fafbff; }
table td.wrap { white-space: normal; max-width: 240px; }

.empty-msg {
  text-align: center; padding: 30px;
  color: var(--muted); font-size: 0.92rem;
}

/* ---------- Login ---------- */
.login-wrap {
  min-height: 100vh;
  display: grid; place-items: center;
  padding: 20px;
  background: linear-gradient(135deg, #eef2ff, #e0e7ff, #f5f7fb);
}
.login-card {
  width: 100%; max-width: 420px;
  background: #fff; border-radius: 18px;
  padding: 32px 28px;
  box-shadow: var(--shadow-lg);
  animation: fadeUp 0.4s ease;
  text-align: center;
}
.login-card img {
  width: 78px; height: 78px; object-fit: contain;
  margin-bottom: 10px;
}
.login-card h1 {
  font-size: 1.3rem; margin-bottom: 6px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.login-card p { color: var(--muted); font-size: 0.9rem; margin-bottom: 22px; }
.login-card .form-group { text-align: left; margin-bottom: 14px; }
.login-error {
  color: var(--danger); font-size: 0.85rem;
  margin: 8px 0; min-height: 18px;
}

/* ---------- Toast ---------- */
.toast-container {
  position: fixed; right: 16px; bottom: 16px; z-index: 10000;
  display: flex; flex-direction: column; gap: 10px;
}
.toast {
  background: #fff; color: var(--text);
  padding: 12px 16px; border-radius: 10px;
  box-shadow: var(--shadow-lg);
  border-left: 4px solid var(--primary);
  font-size: 0.9rem;
  animation: slideIn 0.25s ease;
  max-width: 320px;
}
.toast.success { border-left-color: var(--success); }
.toast.error   { border-left-color: var(--danger);  }
.toast.warning { border-left-color: var(--warning); }
@keyframes slideIn {
  from { transform: translateX(30px); opacity: 0; }
  to   { transform: translateX(0);    opacity: 1; }
}

/* ---------- Dashboard ---------- */
.dash-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}
.dash-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
  display: flex; flex-direction: column; gap: 8px;
  border-top: 4px solid var(--primary);
}
.dash-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}
.dash-card .icon { font-size: 1.8rem; }
.dash-card .title { font-weight: 700; font-size: 1rem; }
.dash-card .desc  { color: var(--muted); font-size: 0.82rem; }

/* ---------- Mobile ---------- */
@media (max-width: 640px) {
  .navbar { padding: 10px 14px; }
  .navbar .brand span { display: none; }
  .navbar .user .name { display: none; }
  .card { padding: 16px; }
  .form-grid { grid-template-columns: 1fr; }
  .actions-row { flex-direction: column; }
  .actions-row .btn { width: 100%; }
  .login-card { padding: 24px 20px; }
}