:root {
  /* Comprend palette */
  --cobalt: #0033ff;
  --cobalt-deep: #001fa6;
  --lime: #d6f266;
  --paper: #ffffff;
  --ink: #001033;
  --muted: #5a607a;
  --hairline: #e5e7ee;
  --surface-soft: #f5f6fa;
  --danger: #b3261e;
  --danger-soft: #fdecea;
  --success: #1f7a4a;
  --success-soft: #e6f4ec;
  --radius-lg: 4px;
  --radius-md: 4px;
  --radius-sm: 2px;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI",
    "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  min-height: 100dvh;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--cobalt);
  text-underline-offset: 4px;
  text-decoration-thickness: 1px;
}

body {
  display: flex;
  flex-direction: column;
}

.topbar {
  background: var(--cobalt);
  width: 100%;
  padding: 0;
  display: flex;
  align-items: center;
}

.topbar img {
  height: 50px;
  width: auto;
  display: block;
}

.shell {
  max-width: 480px;
  width: 100%;
  margin: 0 auto;
  padding: 32px 24px 48px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

h1.title {
  font-size: 36px;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.05;
  color: var(--ink);
  margin: 0 0 8px;
}

p.lede {
  color: var(--muted);
  margin: 0 0 28px;
  font-size: 15px;
}

.actor {
  font-size: 13px;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: auto;
  padding-top: 24px;
  border-top: 1px solid var(--hairline);
}

.actor .who {
  color: var(--ink);
  font-weight: 500;
  max-width: 60%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.actor a {
  color: var(--muted);
  font-size: 13px;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.actor a:hover {
  color: var(--cobalt);
}

.logout-form {
  display: inline;
  margin: 0;
  padding: 0;
}

.actor .link-button {
  appearance: none;
  -webkit-appearance: none;
  background: transparent;
  border: 0;
  cursor: pointer;
  font: inherit;
  padding: 0;
  color: var(--muted);
  font-size: 13px;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.actor .link-button:hover {
  color: var(--cobalt);
}

.door-stack {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 16px;
}

.door-btn {
  appearance: none;
  -webkit-appearance: none;
  border: 0;
  font: inherit;
  cursor: pointer;
  text-align: left;
  background: var(--cobalt);
  color: var(--paper);
  padding: 26px 24px;
  border-radius: var(--radius-lg);
  font-weight: 600;
  font-size: 19px;
  letter-spacing: -0.01em;
  transition: transform 0.08s ease, background 0.15s ease;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.door-btn .label {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.door-btn .arrow {
  width: 26px;
  height: 26px;
  flex: 0 0 auto;
}

.door-btn small {
  display: block;
  color: rgba(255, 255, 255, 0.7);
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0;
}

.door-btn:active {
  transform: scale(0.99);
  background: var(--cobalt-deep);
}

.door-btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.door-btn.secondary {
  background: var(--paper);
  color: var(--cobalt);
  border: 1.5px solid var(--cobalt);
  padding: 18px 24px;
  font-size: 16px;
}

.door-btn.secondary small {
  color: var(--muted);
}

.code-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.code-input {
  font: inherit;
  font-size: 32px;
  font-weight: 600;
  letter-spacing: 0.4em;
  text-align: center;
  background: var(--paper);
  color: var(--cobalt);
  border: 1.5px solid var(--hairline);
  border-radius: var(--radius-lg);
  padding: 22px 16px;
  width: 100%;
}

.code-input:focus {
  outline: 0;
  border-color: var(--cobalt);
}

.btn-primary {
  appearance: none;
  -webkit-appearance: none;
  border: 0;
  cursor: pointer;
  background: var(--cobalt);
  color: var(--paper);
  font: inherit;
  font-weight: 600;
  padding: 18px 24px;
  border-radius: var(--radius-lg);
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.btn-primary:hover {
  background: var(--cobalt-deep);
}

.btn-primary:disabled {
  opacity: 0.5;
}

.btn-link {
  display: block;
  text-align: center;
  margin-top: 20px;
  color: var(--cobalt);
  text-decoration: underline;
  text-underline-offset: 4px;
  font-size: 14px;
  padding: 12px;
}

.btn-link:hover {
  color: var(--cobalt-deep);
}

.feedback {
  margin-top: 22px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  font-size: 14px;
  background: var(--surface-soft);
  border: 1px solid var(--hairline);
}

.feedback.error {
  background: var(--danger-soft);
  color: var(--danger);
  border-color: transparent;
  font-weight: 500;
}

.feedback.success {
  background: var(--success-soft);
  color: var(--success);
  border-color: transparent;
  font-weight: 500;
}

.closed {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
}

.closed h1 {
  font-size: 48px;
  letter-spacing: -0.03em;
  color: var(--cobalt);
  margin: 0 0 16px;
  line-height: 1;
}

.closed p.lede {
  font-size: 16px;
}

/* Admin views — white surface, cobalt accents. */
.admin {
  max-width: 1080px;
}

.admin h1 {
  font-size: 28px;
  letter-spacing: -0.02em;
  margin: 0 0 24px;
  color: var(--ink);
}

.admin nav {
  display: flex;
  gap: 24px;
  margin-bottom: 28px;
  font-size: 14px;
  border-bottom: 1px solid var(--hairline);
  padding-bottom: 0;
}

.admin nav a {
  color: var(--muted);
  text-decoration: none;
  padding: 8px 0;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}

.admin nav a.active {
  border-bottom-color: var(--cobalt);
  color: var(--cobalt);
  font-weight: 600;
}

.admin nav a:hover {
  color: var(--cobalt);
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--paper);
  color: var(--ink);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  overflow: hidden;
  font-size: 14px;
}

th, td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid var(--hairline);
}

th {
  background: var(--surface-soft);
  font-weight: 600;
  color: var(--cobalt-deep);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

tr:last-child td {
  border-bottom: 0;
}

.tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 11px;
  background: var(--surface-soft);
  color: var(--cobalt-deep);
  font-weight: 600;
}

.tag.success { background: var(--lime); color: var(--cobalt-deep); }
.tag.error   { background: var(--danger-soft); color: var(--danger); }

.filters {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.filters select, .filters input {
  font: inherit;
  font-size: 13px;
  padding: 10px 12px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
  background: var(--paper);
  color: var(--ink);
}

.code-card {
  background: var(--paper);
  color: var(--ink);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
  font-size: 14px;
}

.code-card .meta {
  color: var(--muted);
  font-size: 12px;
}

.code-card .num {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 18px;
  font-weight: 700;
  color: var(--cobalt);
  letter-spacing: 0.12em;
}

form.inline { display: inline; }

.modal {
  background: var(--cobalt);
  color: var(--paper);
  border-radius: var(--radius-md);
  padding: 22px;
  margin-bottom: 24px;
}

.modal .num {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 36px;
  letter-spacing: 0.3em;
  color: var(--lime);
  font-weight: 700;
  margin: 8px 0;
}