:root {
  --color-primary: #2563eb;
  --color-primary-dark: #1d4ed8;
  --color-bg: #f4f6f9;
  --color-sidebar: #111827;
  --color-text: #1f2937;
  --color-muted: #6b7280;
  --color-border: #e5e7eb;
  --color-success: #16a34a;
  --color-error: #dc2626;
  --radius: 8px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
}

/* ---- Auth pages ---- */
.auth-shell {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 100%);
}

.auth-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 2.5rem;
  width: 100%;
  max-width: 400px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}

.auth-brand { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 1.5rem; }
.auth-brand h1 { font-size: 1.25rem; margin: 0; }

.brand-mark {
  display: inline-flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; border-radius: 8px;
  background: var(--color-primary); color: #fff; font-weight: 700; font-size: 0.85rem;
}

.auth-form { display: flex; flex-direction: column; gap: 0.5rem; }
.auth-form label { font-size: 0.85rem; font-weight: 600; margin-top: 0.5rem; }
.auth-form input, .auth-form select {
  padding: 0.6rem 0.75rem; border: 1px solid var(--color-border); border-radius: 6px; font-size: 0.95rem;
}
.checkbox-label { display: flex; align-items: center; gap: 0.4rem; font-weight: 400 !important; }

.btn-primary {
  margin-top: 1rem; background: var(--color-primary); color: #fff; border: none;
  padding: 0.7rem 1rem; border-radius: 6px; font-weight: 600; cursor: pointer; font-size: 0.95rem;
}
.btn-primary:hover { background: var(--color-primary-dark); }
.btn-link { background: none; border: none; color: var(--color-muted); cursor: pointer; font-size: 0.85rem; }

.auth-footer { margin-top: 1.25rem; font-size: 0.85rem; text-align: center; color: var(--color-muted); }
.auth-footer a { color: var(--color-primary); text-decoration: none; }

/* ---- App shell ---- */
.app-shell { display: flex; min-height: 100vh; }

.sidebar { width: 240px; background: var(--color-sidebar); color: #d1d5db; flex-shrink: 0; }
.sidebar-brand { display: flex; align-items: center; gap: 0.6rem; padding: 1.25rem; }
.brand-name { color: #fff; font-weight: 700; font-size: 0.9rem; }
.sidebar-nav { display: flex; flex-direction: column; padding: 0.5rem; }
.nav-link { color: #9ca3af; text-decoration: none; padding: 0.6rem 0.75rem; border-radius: 6px; font-size: 0.9rem; }
.nav-link:hover, .nav-link.active { background: rgba(255,255,255,0.08); color: #fff; }

.app-main { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.navbar { display: flex; align-items: center; justify-content: space-between; padding: 1rem 1.5rem; background: #fff; border-bottom: 1px solid var(--color-border); }
.navbar-title { font-weight: 700; font-size: 1.1rem; }
.navbar-user { display: flex; align-items: center; gap: 0.75rem; font-size: 0.85rem; }
.user-role { background: var(--color-bg); padding: 0.15rem 0.5rem; border-radius: 999px; font-size: 0.75rem; color: var(--color-muted); }
.inline-form { display: inline; }

.app-content { padding: 1.5rem; }

.page-header h1 { margin: 0 0 0.25rem; }
.text-muted { color: var(--color-muted); }

.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-top: 1.5rem; }
.stat-card { background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius); padding: 1.25rem; }
.stat-label { display: block; color: var(--color-muted); font-size: 0.8rem; margin-bottom: 0.4rem; }
.stat-value { font-size: 1.6rem; font-weight: 700; }

.alert { padding: 0.7rem 1rem; border-radius: 6px; font-size: 0.85rem; margin-bottom: 1rem; }
.alert-success { background: #dcfce7; color: #166534; }
.alert-error { background: #fee2e2; color: #991b1b; }

.error-card { max-width: 400px; margin: 4rem auto; text-align: center; }
.error-card h1 { font-size: 3rem; margin-bottom: 0; }
.error-detail { text-align: left; background: #f3f4f6; padding: 1rem; border-radius: 6px; overflow-x: auto; }

table.data-table { width: 100%; border-collapse: collapse; background: #fff; }
table.data-table th, table.data-table td { padding: 0.6rem 0.8rem; border-bottom: 1px solid var(--color-border); text-align: left; font-size: 0.9rem; }
table.data-table th { background: var(--color-bg); font-weight: 600; }

/* ---- Toolbar / cards / generic forms ---- */
.toolbar { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-bottom: 1rem; flex-wrap: wrap; }
.toolbar-filters { display: flex; gap: 0.5rem; align-items: center; flex-wrap: wrap; }
.toolbar-filters input[type="text"], .toolbar-filters select {
  padding: 0.5rem 0.7rem; border: 1px solid var(--color-border); border-radius: 6px; font-size: 0.85rem;
}
.checkbox-inline { display: flex; align-items: center; gap: 0.35rem; font-size: 0.85rem; }

.card { background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius); padding: 1.5rem; }
.card + .card { margin-top: 1rem; }
.card h2 { margin-top: 0; font-size: 1.05rem; }

.btn-secondary {
  background: #fff; color: var(--color-text); border: 1px solid var(--color-border);
  padding: 0.55rem 0.9rem; border-radius: 6px; font-weight: 600; cursor: pointer; font-size: 0.85rem; text-decoration: none; display: inline-block;
}
.btn-secondary:hover { background: var(--color-bg); }
.btn-danger { background: #fff; color: var(--color-error); border: 1px solid #fecaca; padding: 0.55rem 0.9rem; border-radius: 6px; font-weight: 600; cursor: pointer; font-size: 0.85rem; }
.btn-danger:hover { background: #fee2e2; }
a.btn-primary { text-decoration: none; display: inline-block; }

.badge { display: inline-block; padding: 0.15rem 0.55rem; border-radius: 999px; font-size: 0.75rem; font-weight: 600; }
.badge-green { background: #dcfce7; color: #166534; }
.badge-gray { background: #f3f4f6; color: #4b5563; }
.badge-blue { background: #dbeafe; color: #1e40af; }
.badge-amber { background: #fef3c7; color: #92400e; }

.form-section { margin-bottom: 1.5rem; }
.form-section h3 { font-size: 0.95rem; margin-bottom: 0.75rem; color: var(--color-muted); text-transform: uppercase; letter-spacing: 0.03em; }
.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
.form-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.form-group { display: flex; flex-direction: column; gap: 0.3rem; }
.form-group.span-2 { grid-column: span 2; }
.form-group label { font-size: 0.8rem; font-weight: 600; }
.form-group input, .form-group select, .form-group textarea {
  padding: 0.55rem 0.7rem; border: 1px solid var(--color-border); border-radius: 6px; font-size: 0.9rem; font-family: inherit;
}
.form-actions { display: flex; gap: 0.75rem; margin-top: 1.5rem; }
.hint { font-size: 0.75rem; color: var(--color-muted); }

.pagination { display: flex; gap: 0.4rem; align-items: center; margin-top: 1rem; font-size: 0.85rem; }
.pagination a, .pagination span { padding: 0.4rem 0.7rem; border-radius: 6px; border: 1px solid var(--color-border); text-decoration: none; color: var(--color-text); }
.pagination .current { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.pagination .disabled { opacity: 0.4; pointer-events: none; }

.detail-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 1rem; align-items: start; }
.detail-row { display: flex; justify-content: space-between; padding: 0.5rem 0; border-bottom: 1px solid var(--color-border); font-size: 0.9rem; }
.detail-row:last-child { border-bottom: none; }
.detail-label { color: var(--color-muted); }
.empty-state { text-align: center; padding: 3rem 1rem; color: var(--color-muted); }