/* URL 縮短服務 - 樣式表 (Dark Theme) */

/* === CSS 變數 === */
:root {
  /* Yellow/Gold Accent - 主題色 */
  --primary: #FFD700;
  --primary-dark: #FFC000;
  --primary-text: #000000;
  /* 用於主按鈕上的文字顏色，確保對比度 */

  /* Status Colors */
  --danger: #ef4444;
  --danger-dark: #dc2626;
  --success: #22c55e;
  --success-dark: #16a34a;
  --warning: #f59e0b;

  /* Dark Theme Palette */
  --bg-body: #000000;
  /* 純黑背景 */
  --bg-surface: #121212;
  /* 卡片與區塊背景 */
  --bg-surface-hover: #1e1e1e;

  --border-color: #333333;
  /* 深灰邊框 */

  --text-main: #FFFFFF;
  /* 主要文字 */
  --text-secondary: #BBBBBB;
  /*次要文字 */
  --text-muted: #666666;
  /* 弱化文字 */

  /* Misc */
  --radius: 8px;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.7);
}

/* === 基礎樣式 === */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg-body);
  color: var(--text-main);
  line-height: 1.6;
}

a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

a:hover {
  text-decoration: underline;
  color: var(--primary-dark);
}

/* === Header === */
.header {
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
  padding: 0.75rem 1.5rem;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 0.05em;
}

.logo:hover {
  text-decoration: none;
}

.nav {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.nav a {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.nav a:hover {
  color: var(--primary);
  text-decoration: none;
}

.btn-logout {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 0.875rem;
  transition: color 0.2s;
}

.btn-logout:hover {
  color: var(--danger);
}

/* === Container === */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

/* === Page Header === */
.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.page-header h1 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--primary);
}

/* === Buttons === */
.btn {
  display: inline-block;
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  background: var(--bg-surface);
  color: var(--text-main);
  font-size: 0.875rem;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s ease;
}

.btn:hover {
  background: var(--bg-surface-hover);
  border-color: var(--text-secondary);
  text-decoration: none;
}

.btn-primary {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--primary-text);
  font-weight: 600;
}

.btn-primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  color: var(--primary-text);
}

.btn-danger {
  background: transparent;
  border-color: var(--danger);
  color: var(--danger);
}

.btn-danger:hover {
  background: var(--danger);
  color: white;
  border-color: var(--danger);
}

.btn-sm {
  padding: 0.25rem 0.5rem;
  font-size: 0.75rem;
}

.btn-block {
  display: block;
  width: 100%;
}

.btn-icon {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.25rem;
  font-size: 1rem;
  color: var(--text-secondary);
  transition: color 0.2s;
}

.btn-icon:hover {
  color: var(--primary);
}

/* === Cards === */
.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  transition: transform 0.2s;
}

.card:hover {
  border-color: #444;
}

/* === Forms === */
.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--text-secondary);
}

/* Input Fields (Generic & Specific) */
input[type="text"],
input[type="password"],
input[type="email"],
input[type="number"],
input[type="url"],
select,
textarea {
  width: 100%;
  padding: 0.625rem 0.75rem;
  background: var(--bg-body);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  font-size: 1rem;
  color: var(--text-main);
  transition: all 0.2s ease;
}

input[type="range"] {
  accent-color: var(--primary);
  cursor: pointer;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(255, 215, 0, 0.2);
}

.form-group .hint {
  display: block;
  margin-top: 0.25rem;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.required {
  color: var(--danger);
}

.form-actions {
  display: flex;
  gap: 0.75rem;
  justify-content: flex-end;
  margin-top: 1.5rem;
}

/* === Alerts === */
.alert {
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  margin-bottom: 1rem;
}

.alert-error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #fca5a5;
}

.alert-success {
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.3);
  color: #86efac;
}

/* === Tables === */
.table-container {
  overflow-x: auto;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-surface);
}

.data-table th,
.data-table td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-main);
}

.data-table th {
  background: var(--bg-body);
  font-weight: 600;
  color: var(--primary);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.data-table tr:hover {
  background: var(--bg-surface-hover);
}

.data-table .loading,
.data-table .empty {
  text-align: center;
  color: var(--text-muted);
  font-style: italic;
  padding: 2rem;
}

.data-table .actions {
  display: flex;
  gap: 0.5rem;
}

.data-table tr.expired {
  opacity: 0.5;
}

.short-url {
  font-family: monospace;
  background: var(--bg-body);
  border: 1px solid var(--border-color);
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  color: var(--primary);
}

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

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

.badge-permanent {
  background: transparent;
  border: 1px solid var(--success);
  color: var(--success);
  padding: 0.125rem 0.5rem;
  border-radius: 4px;
  font-size: 0.75rem;
}

/* === Checkbox === */
.checkbox-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  font-weight: normal;
  color: var(--text-main);
}

.checkbox-label input[type="checkbox"] {
  width: auto;
  accent-color: var(--primary);
}

.expires-options {
  margin-bottom: 0.5rem;
}

.form-group input:disabled {
  background: var(--bg-surface-hover);
  border-color: var(--border-color);
  color: var(--text-muted);
  cursor: not-allowed;
}

/* === Search Bar === */
.search-bar {
  margin-bottom: 1rem;
}

.search-bar input {
  width: 100%;
  max-width: 400px;
  /* Specific override to ensure dark background */
  background: var(--bg-surface);
  border-color: var(--border-color);
  color: var(--text-main);
}

.search-bar input:focus {
  border-color: var(--primary);
  background: var(--bg-surface-hover);
}

/* === Pagination === */
.pagination {
  display: flex;
  gap: 0.5rem;
  justify-content: center;
  margin-top: 1.5rem;
}

.pagination button,
.pagination .current {
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  background: var(--bg-surface);
  color: var(--text-main);
  cursor: pointer;
  transition: all 0.2s;
}

.pagination button:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.pagination .current {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--primary-text);
  font-weight: bold;
}

/* === Login Page === */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%);
}

.login-container {
  width: 100%;
  max-width: 400px;
  padding: 1rem;
}

.login-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 2rem;
  text-align: center;
}

.login-card h1 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--primary);
}

.login-card h2 {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

/* === Error Page === */
.error-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-body);
}

.error-container {
  text-align: center;
}

.error-container h1 {
  font-size: 6rem;
  color: var(--border-color);
}

.error-container h2 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--primary);
}

.error-container p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

/* === Stats === */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

@media (max-width: 768px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }
}

.stat-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.5rem;
  text-align: center;
}

.stat-card h3 {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary);
}

/* === URL Info === */
.url-info {
  margin-bottom: 1rem;
}

.url-info p {
  margin-bottom: 0.5rem;
  word-break: break-all;
  color: var(--text-main);
}

/* === Success Card === */
.success-card h2 {
  color: var(--primary);
  margin-bottom: 1rem;
}

.result-url {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.result-url input {
  flex: 1;
  padding: 0.75rem;
  background: var(--bg-body);
  border: 1px solid var(--primary);
  border-radius: var(--radius);
  font-family: monospace;
  font-size: 0.875rem;
  color: var(--primary);
}

/* === Modal === */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.85);
  /* Dark overlay */
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  backdrop-filter: blur(4px);
}

.modal-content {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 2rem;
  max-width: 500px;
  width: 90%;
  text-align: center;
  color: var(--text-main);
  box-shadow: var(--shadow-lg);
}

.modal-content h2 {
  margin-bottom: 1rem;
  color: var(--primary);
}

.modal-content .warning {
  color: var(--warning);
  margin-bottom: 1rem;
}

.token-display {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.token-display input {
  flex: 1;
  padding: 0.75rem;
  background: var(--bg-body);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  font-family: monospace;
  font-size: 0.75rem;
  color: var(--text-main);
}

/* === API Token Page Styles (Previously Inline) === */
.token-cell {
  font-family: monospace;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 2px 4px;
  border-radius: 4px;
}

.token-cell:hover {
  color: var(--primary);
  background: var(--bg-surface-hover);
}

.api-docs {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 20px;
  color: var(--text-main);
}

.api-docs h3,
.api-docs h4 {
  color: var(--primary);
  margin-bottom: 1rem;
}

.code-block {
  background: #000000;
  padding: 10px;
  padding-right: 70px;
  /* Space for copy button */
  border: 1px solid var(--border-color);
  border-radius: 4px;
  font-family: monospace;
  margin: 10px 0;
  white-space: nowrap !important;
  overflow-x: auto;
  color: #a3e635;
  /* Terminal green text */
}

.code-wrapper {
  position: relative;
}

.code-wrapper .copy-btn {
  position: absolute;
  top: 5px;
  right: 5px;
  background: var(--bg-surface);
  color: var(--primary);
  border: 1px solid var(--primary);
  border-radius: 4px;
  padding: 4px 10px;
  font-size: 0.75rem;
  cursor: pointer;
  opacity: 0.8;
  transition: all 0.2s;
  z-index: 10;
}

.code-wrapper .copy-btn:hover {
  opacity: 1;
  background: var(--primary);
  color: var(--primary-text);
}

.toggle-btn {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.2em;
  color: var(--text-secondary);
}

.toggle-btn:hover {
  color: var(--primary);
}

.token-wrapper {
  display: flex;
  align-items: center;
  gap: 6px;
}

.token-text {
  font-family: monospace;
  color: var(--warning);
}

/* === Footer === */
.footer {
  text-align: center;
  padding: 2rem;
  color: var(--text-muted);
  font-size: 0.875rem;
  border-top: 1px solid var(--border-color);
  margin-top: 2rem;
}

/* === Responsive === */
@media (max-width: 768px) {
  .nav {
    gap: 1rem;
  }

  .page-header {
    flex-direction: column;
    gap: 1rem;
    align-items: flex-start;
  }

  .data-table th,
  .data-table td {
    padding: 0.5rem;
    font-size: 0.875rem;
  }
}

/* === Form Fixes === */
/* Force calendar icon to be light in dark mode */
::-webkit-calendar-picker-indicator {
  filter: invert(1);
  opacity: 0.8;
  cursor: pointer;
}

/* === Expiry UI (Buttons + Flatpickr) === */
.expiry-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}

.expiry-btn {
  padding: 8px 16px;
  border: 1px solid var(--border-color);
  background: transparent;
  color: var(--text-main);
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
  font-size: 0.9rem;
}

.expiry-btn:hover {
  border-color: var(--primary);
  background: rgba(255, 215, 0, 0.1);
}

.expiry-btn.active {
  background: var(--primary);
  color: #000000;
  border-color: var(--primary);
  font-weight: 600;
}

.expiry-btn.permanent {
  background: transparent;
  border-style: dashed;
}

.expiry-btn.permanent.active {
  background: var(--primary);
  border-style: solid;
}

.custom-date-container {
  display: none;
  margin-top: 12px;
  padding: 12px;
  background: var(--bg-surface-hover);
  border-radius: 6px;
  border: 1px solid var(--border-color);
}

.custom-date-container.show {
  display: block;
}

.custom-date-container input {
  background: var(--bg-body);
}

/* Customize Flatpickr to match theme */
.flatpickr-calendar.dark {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
}

.flatpickr-day.selected,
.flatpickr-day.startRange,
.flatpickr-day.endRange,
.flatpickr-day.selected.inRange,
.flatpickr-day.startRange.inRange,
.flatpickr-day.endRange.inRange,
.flatpickr-day.selected:focus,
.flatpickr-day.startRange:focus,
.flatpickr-day.endRange:focus,
.flatpickr-day.selected:hover,
.flatpickr-day.startRange:hover,
.flatpickr-day.endRange:hover,
.flatpickr-day.selected.prevMonthDay,
.flatpickr-day.startRange.prevMonthDay,
.flatpickr-day.endRange.prevMonthDay,
.flatpickr-day.selected.nextMonthDay,
.flatpickr-day.startRange.nextMonthDay,
.flatpickr-day.endRange.nextMonthDay {
  background: var(--primary) !important;
  border-color: var(--primary) !important;
  color: #000 !important;
  font-weight: bold;
}

.selected-date-display {
  margin-top: 8px;
  padding: 8px 12px;
  background: rgba(255, 215, 0, 0.1);
  border-radius: 4px;
  color: var(--primary);
  font-size: 0.9rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
}