:root {
  --bg: #ffffff;
  --bg-card: #ffffff;
  --bg-elevated: #f1f5fb;
  --text: #0a2540;
  --text-muted: #5b6f8a;
  --accent: #0a2540;
  --accent-hover: #0e3260;
  --accent-glow: rgba(10, 37, 64, 0.18);
  --success: #15803d;
  --success-bg: #ecfdf3;
  --error: #b91c1c;
  --error-bg: #fef2f2;
  --warning: #b45309;
  --border: #d6e0ed;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(10, 37, 64, 0.08);
}

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

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 480px;
  margin: 0 auto;
  padding: 24px 16px 48px;
  min-height: 100%;
  display: flex;
  flex-direction: column;
}

.container.admin {
  max-width: 720px;
}

.header {
  text-align: center;
  margin-bottom: 24px;
}

.brand-logo {
  display: block;
  width: 100%;
  max-width: 360px;
  height: auto;
  margin: 0 auto 16px;
  filter: drop-shadow(0 6px 24px var(--accent-glow));
}

.brand-logo.small {
  max-width: 180px;
  margin-bottom: 12px;
}

.header h1 {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.3px;
  color: var(--text-muted);
}

.header h1 sub {
  font-size: 0.6em;
  vertical-align: sub;
  color: var(--accent);
  font-weight: 700;
}

.subtitle {
  font-weight: 400;
  color: var(--text-muted);
  margin-left: 6px;
}

.tagline {
  color: var(--text-muted);
  margin-top: 8px;
  font-size: 14px;
}

.card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 16px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.card.success {
  border-color: var(--success);
  background: var(--success-bg);
}

.card.success h2 {
  color: var(--success);
}

.card.error {
  border-color: var(--error);
  background: var(--error-bg);
}

.card.error h2 {
  color: var(--error);
}

.card h2 {
  font-size: 20px;
  margin-bottom: 12px;
}

.explain {
  color: var(--text-muted);
  margin-bottom: 20px;
  font-size: 15px;
}

.label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--text-muted);
}

input[type="text"],
input[type="email"],
input[type="password"] {
  width: 100%;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px 16px;
  color: var(--text);
  font-size: 16px;
  margin-bottom: 16px;
  transition: border-color 0.15s;
  font-family: inherit;
  -webkit-appearance: none;
  appearance: none;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus {
  outline: none;
  border-color: var(--accent);
}

input::placeholder {
  color: var(--text-muted);
  opacity: 0.6;
}

.btn {
  display: block;
  width: 100%;
  padding: 16px 20px;
  border-radius: 10px;
  font-size: 16px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: background 0.15s, transform 0.05s;
  font-family: inherit;
}

.btn:active {
  transform: scale(0.98);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--accent);
  color: #ffffff;
  box-shadow: 0 4px 14px var(--accent-glow);
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent-hover);
}

.btn-secondary {
  background: var(--bg-elevated);
  color: var(--text);
  margin-top: 16px;
  border: 1px solid var(--border);
}

.btn-secondary:hover:not(:disabled) {
  background: #e4ebf5;
}

.btn-approve, .btn-deny {
  flex: 1;
  padding: 12px 16px;
  font-size: 14px;
}

.btn-approve {
  background: var(--success);
  color: #ffffff;
}

.btn-approve:hover:not(:disabled) {
  background: #126c33;
}

.btn-deny {
  background: var(--error);
  color: #ffffff;
}

.btn-deny:hover:not(:disabled) {
  background: #991919;
}

.hidden {
  display: none !important;
}

.muted {
  color: var(--text-muted);
}

.small {
  font-size: 13px;
}

.center {
  text-align: center;
}

code {
  font-family: 'SF Mono', Menlo, Monaco, Consolas, monospace;
  background: var(--bg-elevated);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.9em;
  color: var(--accent);
}

.spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
  margin: 0 auto 16px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.cred-row {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 16px;
  margin: 12px 0;
}

.cred-label {
  display: block;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.cred-value {
  font-size: 18px;
  font-weight: 600;
  background: none;
  padding: 0;
  word-break: break-all;
  user-select: all;
}

.footer {
  margin-top: auto;
  padding-top: 24px;
  text-align: center;
  color: var(--text-muted);
}

/* Admin */
.admin-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  padding: 0 4px;
}

.pill {
  display: inline-block;
  padding: 4px 12px;
  background: var(--success);
  color: #ffffff;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}

.pill.error {
  background: var(--error);
}

.request-status.pending {
  background: var(--warning);
  color: #ffffff;
}

.request-status.approved {
  background: var(--success);
  color: #ffffff;
}

.request-status.denied {
  background: var(--error);
  color: #ffffff;
}

.requests {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.request-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
}

.request-item.pending {
  border-left: 4px solid var(--warning);
}

.request-item.approved {
  border-left: 4px solid var(--success);
  opacity: 0.7;
}

.request-item.denied {
  border-left: 4px solid var(--error);
  opacity: 0.7;
}

.request-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
  gap: 8px;
  flex-wrap: wrap;
}

.request-id {
  font-family: monospace;
  font-size: 13px;
  color: var(--text-muted);
}

.request-status {
  font-size: 11px;
  text-transform: uppercase;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 4px;
  letter-spacing: 0.5px;
}

.request-note {
  margin: 8px 0 12px;
  font-size: 15px;
  word-break: break-word;
}

.request-note.empty {
  color: var(--text-muted);
  font-style: italic;
}

.request-time {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.request-actions {
  display: flex;
  gap: 8px;
}

.form-error {
  color: var(--error);
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid var(--error);
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 14px;
  margin-bottom: 12px;
}

.pills {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.request-email {
  font-size: 15px;
  margin-bottom: 4px;
  word-break: break-all;
}

.request-email b {
  color: var(--accent);
}

.approve-form {
  margin-top: 12px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.approve-form .label {
  margin-top: 8px;
}

.approve-form input[type="text"] {
  margin-bottom: 8px;
}

.form-actions {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}

.form-actions .btn {
  margin-top: 0;
  flex: 1;
}

@media (min-width: 600px) {
  .container {
    padding: 40px 24px;
  }
  .header h1 {
    font-size: 32px;
  }
}