:root {
  --bg: #f7f7f8;
  --surface: #ffffff;
  --text: #1f2328;
  --muted: #6b7280;
  --border: #dddddd;
  --border-soft: #eeeeee;
  --header-bg: #f5f5f5;
  --accent: #2563eb;
  --green: #28a745;
  --green-dark: #1e7e34;
  --reject-bg: #eceef1;
  --reject-text: #374151;
  --danger-bg: #fdecea;
  --danger-text: #b3261e;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.2);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.5;
}

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

/* Header */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 2rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.brand {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
}
.brand:hover {
  text-decoration: none;
}
.site-nav {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.9rem;
}
.inline-form {
  display: inline;
  margin: 0;
}
.link-button {
  background: none;
  border: none;
  padding: 0;
  color: var(--accent);
  font: inherit;
  cursor: pointer;
}
.link-button:hover {
  text-decoration: underline;
}

.content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
}

/* Flash messages */
.flashes {
  list-style: none;
  max-width: 1200px;
  margin: 1rem auto 0;
  padding: 0 2rem;
}
.flash {
  padding: 0.6rem 0.9rem;
  border-radius: 6px;
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
}
.flash-success {
  background: #e7f6ec;
  color: var(--green-dark);
  border: 1px solid #bfe6cc;
}
.flash-error {
  background: var(--danger-bg);
  color: var(--danger-text);
  border: 1px solid #f5c6c2;
}

/* Sections + tables */
.section {
  margin-bottom: 3rem;
}
.section h2 {
  font-size: 1.5rem;
  margin: 0 0 1rem;
}
.table-scroll {
  overflow-x: auto;
}
table {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid var(--border);
  background: var(--surface);
}
th,
td {
  padding: 0.5rem;
  border: 1px solid var(--border);
  text-align: left;
}
thead tr {
  background: var(--header-bg);
}
th.num,
td.num {
  text-align: right;
}
th.center,
td.center {
  text-align: center;
}
td.price {
  font-weight: 700;
}

.error-box {
  padding: 1rem;
  border-radius: 6px;
  background: var(--danger-bg);
  color: var(--danger-text);
  border: 1px solid #f5c6c2;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.45rem 0.8rem;
  font-size: 0.875rem;
  font-weight: 500;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  color: #fff;
}
.btn-history {
  background: var(--green);
  padding: 0.25rem 0.6rem;
}
.btn-history:hover {
  background: var(--green-dark);
}
.btn-approve {
  background: var(--green);
  width: 100%;
}
.btn-approve:hover {
  background: var(--green-dark);
}
.btn-reject {
  background: var(--reject-bg);
  color: var(--reject-text);
  width: 100%;
}
.btn-reject:hover {
  background: #dde1e6;
}
.btn-secondary {
  background: #6c757d;
}

/* Admin header */
.admin-header {
  margin-bottom: 1.5rem;
}
.admin-header h1 {
  font-size: 1.9rem;
  margin: 0;
}
.muted {
  color: var(--muted);
  margin: 0.35rem 0 0;
}
.small {
  font-size: 0.85rem;
}
.footer-note {
  margin-top: 1.5rem;
}
.empty-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 2rem;
  text-align: center;
  color: var(--muted);
  box-shadow: var(--shadow);
}

/* Sort bar */
.sort-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
  font-size: 0.85rem;
}
.chip {
  padding: 0.25rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--reject-text);
  font-size: 0.78rem;
  font-weight: 500;
}
.chip:hover {
  text-decoration: none;
  border-color: #9aa1a9;
}
.chip-active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.chip-reset {
  font-size: 0.78rem;
  color: var(--muted);
  text-decoration: underline;
}

/* Candidate cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1rem;
}
.card {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem;
  box-shadow: var(--shadow);
}
.card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.5rem;
}
.card-manufacturer {
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--muted);
}
.card-date {
  font-size: 0.68rem;
  color: var(--muted);
  white-space: nowrap;
}
.card-name {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.3;
}
.card-actions {
  display: flex;
  gap: 0.5rem;
}
.card-actions form {
  flex: 1;
  margin: 0;
}
.card-bottom {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}
.card-price {
  font-size: 1.4rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}
.card-capacity {
  background: var(--header-bg);
  border-radius: 999px;
  padding: 0.1rem 0.55rem;
  font-size: 0.72rem;
  color: var(--muted);
}

/* Login */
.login-box {
  max-width: 360px;
  margin: 3rem auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.75rem;
  box-shadow: var(--shadow);
}
.login-box h1 {
  margin: 0 0 1rem;
  font-size: 1.4rem;
}
.login-box label {
  display: block;
  font-size: 0.85rem;
  margin-bottom: 0.35rem;
  color: var(--muted);
}
.login-box input[type="password"] {
  width: 100%;
  padding: 0.55rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 1rem;
  margin-bottom: 1rem;
}

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 1rem;
}
.modal-overlay[hidden] {
  display: none;
}
.modal {
  background: var(--surface);
  border-radius: 8px;
  padding: 1.5rem;
  max-width: 600px;
  width: 100%;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
}
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-soft);
  padding-bottom: 1rem;
  margin-bottom: 1rem;
}
.modal-header h3 {
  margin: 0;
  font-size: 1.25rem;
}
.modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--muted);
  line-height: 1;
}
.modal-body {
  min-height: 3rem;
}
.modal-note {
  color: var(--muted);
  font-size: 0.85rem;
  margin: 0 0 1rem;
}
.modal-loading,
.modal-empty {
  text-align: center;
  padding: 2rem;
  color: var(--muted);
}
.modal-footer {
  margin-top: 1rem;
  text-align: right;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --surface: #1a1d23;
    --text: #e6e8eb;
    --muted: #9aa1ab;
    --border: #2c313a;
    --border-soft: #262a31;
    --header-bg: #22262e;
    --reject-bg: #2a2f38;
    --reject-text: #cbd2da;
    --danger-bg: #3a1f1d;
    --danger-text: #f2b8b3;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.6);
  }
  .flash-success {
    background: #16351f;
    color: #a9e0ba;
    border-color: #245c33;
  }
}