/* CSS variables — dark mode default */
:root {
  --bg: #0d1117;
  --bg-card: #161b22;
  --bg-input: #21262d;
  --border: #30363d;
  --text: #e6edf3;
  --text-muted: #8b949e;
  --accent: #388bfd;
  --accent-hover: #58a6ff;
  --danger: #f85149;
  --danger-hover: #ff7b72;
  --success: #3fb950;
  --radius: 8px;
  --font:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}

[data-theme="light"] {
  --bg: #ffffff;
  --bg-card: #f6f8fa;
  --bg-input: #ffffff;
  --border: #d0d7de;
  --text: #1f2328;
  --text-muted: #57606a;
  --accent: #0969da;
  --accent-hover: #0860ca;
  --danger: #cf222e;
  --danger-hover: #a40e26;
  --success: #1a7f37;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 14px;
  line-height: 1.5;
  min-height: 100vh;
}

.hidden {
  display: none !important;
}

/* header */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 100;
}

.logo {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--text);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* admin bar */
.admin-bar {
  padding: 8px 24px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-card);
}

.admin-bar input {
  width: 300px;
  max-width: 100%;
}

/* inputs */
input[type="text"],
input[type="url"],
input[type="password"],
input[type="datetime-local"] {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--font);
  font-size: 14px;
  padding: 7px 12px;
  outline: none;
  transition: border-color 0.15s;
}

input[type="text"]:focus,
input[type="url"]:focus,
input[type="password"]:focus,
input[type="datetime-local"]:focus {
  border-color: var(--accent);
}

input[readonly] {
  cursor: default;
  opacity: 0.85;
}

/* buttons */
.btn {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
  color: var(--text);
  cursor: pointer;
  font-family: var(--font);
  font-size: 13px;
  padding: 7px 14px;
  white-space: nowrap;
  transition:
    background 0.15s,
    border-color 0.15s,
    color 0.15s;
}

.btn:hover {
  border-color: var(--accent);
  color: var(--accent-hover);
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: #fff;
}

.btn-ghost {
  background: transparent;
  border-color: transparent;
}

.btn-ghost:hover {
  background: var(--bg-card);
  border-color: var(--border);
  color: var(--text);
}

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

.btn-danger:hover {
  background: var(--danger);
  color: #fff;
}

/* main layout */
.main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 16px 48px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* card */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

/* stat cards */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.stat-card {
  padding: 16px 20px;
}

.stat-label {
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}

.stat-value {
  font-size: 28px;
  font-weight: 600;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

/* create form */
.create-section h2 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 14px;
}

.form-row {
  display: flex;
  gap: 8px;
}

.form-row input {
  flex: 1;
}

.form-options {
  display: flex;
  gap: 16px;
  margin-top: 10px;
  flex-wrap: wrap;
}

.option-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  font-size: 13px;
  color: var(--text-muted);
  user-select: none;
}

.option-toggle:hover {
  color: var(--text);
}

.opt-panel {
  margin-top: 10px;
}

.opt-panel input {
  width: 300px;
  max-width: 100%;
}

/* table section */
.table-section h2 {
  font-size: 15px;
  font-weight: 600;
}

.table-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.table-wrapper {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

th {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

td {
  font-size: 13px;
  vertical-align: middle;
}

tr:last-child td {
  border-bottom: none;
}

tbody tr:hover {
  background: var(--bg-input);
}

.empty-row {
  color: var(--text-muted);
  text-align: center;
  padding: 24px;
  white-space: normal;
}

.url-code {
  font-family: monospace;
  font-size: 13px;
  color: var(--accent);
  cursor: pointer;
  text-decoration: none;
}

.url-code:hover {
  text-decoration: underline;
}

.url-original {
  max-width: 280px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--text-muted);
}

.action-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 12px;
  padding: 4px 6px;
  border-radius: 4px;
  font-family: var(--font);
  transition:
    color 0.15s,
    background 0.15s;
}

.action-btn:hover {
  background: var(--bg-input);
  color: var(--text);
}

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

.actions-cell {
  display: flex;
  gap: 2px;
  align-items: center;
}

/* pagination */
.pagination {
  display: flex;
  gap: 8px;
  align-items: center;
  justify-content: flex-end;
  margin-top: 14px;
  font-size: 13px;
  color: var(--text-muted);
}

/* modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  padding: 16px;
}

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  width: 100%;
  max-width: 680px;
  max-height: 90vh;
  overflow-y: auto;
}

.result-modal {
  max-width: 440px;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}

.modal-code {
  font-family: monospace;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
}

.modal-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.modal-actions-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.toggle-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  cursor: pointer;
  color: var(--text-muted);
  user-select: none;
}

.modal-stats {
  display: flex;
  gap: 24px;
}

.modal-stat-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.modal-stat-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  color: var(--text-muted);
}

.modal-stat-value {
  font-size: 20px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.chart-container {
  position: relative;
  height: 180px;
}

.modal-tables {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.modal-table-block h3 {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.modal-table-block table {
  font-size: 12px;
}

.modal-table-block td:last-child {
  text-align: right;
  color: var(--text-muted);
  width: 50px;
}

/* result modal */
.result-label {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.result-row {
  display: flex;
  gap: 8px;
}

.result-row input {
  flex: 1;
}

.result-qr-wrap {
  margin-top: 4px;
}

/* toast */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 300;
}

.toast {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 16px;
  font-size: 13px;
  color: var(--text);
  max-width: 320px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  animation: toast-in 0.2s ease;
}

.toast.toast-error {
  border-color: var(--danger);
  color: var(--danger);
}

.toast.toast-success {
  border-color: var(--success);
  color: var(--success);
}

@keyframes toast-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* responsive */
@media (max-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .modal-tables {
    grid-template-columns: 1fr;
  }

  .header-right {
    gap: 4px;
  }

  #input-api-key {
    width: 120px;
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .header {
    padding: 10px 12px;
  }

  .main {
    padding: 16px 12px 32px;
  }

  .card {
    padding: 14px;
  }

  .form-row {
    flex-direction: column;
  }

  .modal-stats {
    flex-direction: column;
    gap: 12px;
  }
}