:root {
  --ink: #14181f;
  --ink-soft: #4a5262;
  --line: #e2e5ea;
  --bg: #f4f5f7;
  --panel: #ffffff;
  --accent: #b3541e;      /* burnt orange - school-transport industrial feel */
  --accent-dark: #8f4116;
  --success: #1c7a4d;
  --success-bg: #e6f4ec;
  --danger: #b3261e;
  --danger-bg: #fbe9e7;
  --warning: #8a5a00;
  --warning-bg: #fbf1dc;
  --radius: 6px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--ink); }
body { font-size: 14px; line-height: 1.5; }

a { color: var(--accent-dark); text-decoration: none; }
a:hover { text-decoration: underline; }

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

.sidebar {
  width: 230px;
  flex-shrink: 0;
  background: var(--ink);
  color: #dfe3ea;
  display: flex;
  flex-direction: column;
  padding: 20px 0;
}
.brand { display: flex; align-items: center; gap: 10px; padding: 0 20px 20px; border-bottom: 1px solid #2a3040; margin-bottom: 16px; }
.brand-mark {
  width: 34px; height: 34px; border-radius: 8px; background: var(--accent);
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 13px; letter-spacing: 0.5px;
}
.brand-text { font-weight: 600; font-size: 14px; color: #fff; }
.sidebar nav { display: flex; flex-direction: column; gap: 2px; padding: 0 12px; flex: 1; }
.sidebar nav a {
  color: #b8bfcc; padding: 10px 12px; border-radius: var(--radius); font-size: 13.5px; font-weight: 500;
}
.sidebar nav a:hover { background: #202634; color: #fff; text-decoration: none; }
.sidebar nav a.active { background: var(--accent); color: #fff; }
.sidebar-footer { padding: 16px 20px 0; border-top: 1px solid #2a3040; margin-top: 16px; }
.user-chip { color: #fff; font-size: 13px; font-weight: 600; margin-bottom: 6px; }
.logout-link { color: #9aa2b2; font-size: 12.5px; }

.content { flex: 1; padding: 28px 36px; max-width: 1400px; }

/* ---------- Page head ---------- */
.page-head { display: flex; align-items: center; justify-content: space-between; margin: 24px 0 16px; flex-wrap: wrap; gap: 10px; }
.page-head h1 { font-size: 22px; margin: 0; font-weight: 700; }
.page-head h2 { font-size: 17px; margin: 0; font-weight: 700; }
.muted { color: var(--ink-soft); }
.small { font-size: 12px; }

/* ---------- Cards ---------- */
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 20px 22px; margin-bottom: 20px; }
.card h2 { margin-top: 0; font-size: 15px; }

/* ---------- Stat grid ---------- */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 14px; margin-bottom: 22px; }
.stat-card { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 16px 18px; display: flex; flex-direction: column; gap: 6px; }
.stat-card.stat-highlight { border-color: var(--accent); background: #fdf4ec; }
.stat-label { font-size: 12px; text-transform: uppercase; letter-spacing: 0.04em; color: var(--ink-soft); font-weight: 600; }
.stat-value { font-size: 22px; font-weight: 700; }

/* ---------- Tables ---------- */
.data-table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.data-table th {
  text-align: left; font-size: 11.5px; text-transform: uppercase; letter-spacing: 0.03em;
  color: var(--ink-soft); border-bottom: 2px solid var(--line); padding: 8px 10px; font-weight: 700;
}
.data-table td { padding: 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
.data-table tfoot td { border-top: 2px solid var(--ink); border-bottom: none; font-weight: 700; }
.data-table .empty { text-align: center; color: var(--ink-soft); padding: 24px; }
.actions { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; position: relative; }
.actions form.inline-form { display: inline; }

/* ---------- Badges ---------- */
.badge { display: inline-block; padding: 3px 9px; border-radius: 999px; font-size: 11.5px; font-weight: 700; text-transform: capitalize; }
.badge-success { background: var(--success-bg); color: var(--success); }
.badge-muted { background: #eceef1; color: var(--ink-soft); }
.badge-warning { background: var(--warning-bg); color: var(--warning); }
.badge-type { background: #e7ecf3; color: #33415a; }

.text-danger { color: var(--danger); font-weight: 700; }
.text-success { color: var(--success); font-weight: 700; }

/* ---------- Buttons ---------- */
.btn { display: inline-flex; align-items: center; gap: 6px; padding: 9px 16px; border-radius: var(--radius); font-size: 13.5px; font-weight: 600; border: 1px solid transparent; cursor: pointer; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); text-decoration: none; }
.btn-secondary { background: #fff; border-color: var(--line); color: var(--ink); }
.btn-secondary:hover { background: #f0f1f3; text-decoration: none; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-block { width: 100%; justify-content: center; }
.btn-sm { padding: 6px 12px; font-size: 12.5px; }

.link-danger { background: none; border: none; color: var(--danger); cursor: pointer; font-size: 13px; padding: 0; }
.link-danger:hover { text-decoration: underline; }
.link-action { background: none; border: none; color: var(--accent-dark); cursor: pointer; font-size: 13px; padding: 0; }
.link-action:hover { text-decoration: underline; }

/* ---------- Forms ---------- */
label { display: flex; flex-direction: column; gap: 5px; font-size: 12.5px; font-weight: 600; color: var(--ink-soft); }
input, select, textarea {
  font-family: inherit; font-size: 13.5px; padding: 9px 10px; border: 1px solid var(--line); border-radius: var(--radius);
  color: var(--ink); background: #fff;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(179,84,30,0.12); }
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; align-items: end; margin-bottom: 16px; }
.form-grid .span-2 { grid-column: span 2; }
.form-grid-inline { grid-template-columns: auto 1fr 1fr auto; }
.filter-bar { display: flex; gap: 10px; margin-bottom: 18px; flex-wrap: wrap; align-items: center; }
.filter-bar input, .filter-bar select { min-width: 160px; }

.popover-form {
  display: none; position: absolute; top: 100%; right: 0; z-index: 10;
  background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 14px; width: 240px;
  box-shadow: 0 8px 24px rgba(20,24,31,0.14);
}
.popover-form.open { display: block; }
.popover-form label { margin-bottom: 8px; }

/* ---------- Flash messages ---------- */
.flash { padding: 12px 16px; border-radius: var(--radius); margin-bottom: 18px; font-size: 13.5px; font-weight: 500; }
.flash-success { background: var(--success-bg); color: var(--success); }
.flash-error { background: var(--danger-bg); color: var(--danger); }
.flash-warning { background: var(--warning-bg); color: var(--warning); }

.quick-links { display: flex; gap: 10px; flex-wrap: wrap; }

/* ---------- Login ---------- */
.login-body { display: flex; align-items: center; justify-content: center; min-height: 100vh; background: var(--ink); }
.login-card { background: #fff; border-radius: 12px; padding: 36px 32px; width: 340px; }
.login-brand { text-align: center; margin-bottom: 20px; }
.login-brand .brand-mark { margin: 0 auto 12px; }
.login-brand h1 { font-size: 18px; margin: 0 0 4px; }
.login-brand p { font-size: 12.5px; color: var(--ink-soft); margin: 0; }
.login-card form { display: flex; flex-direction: column; gap: 14px; }