/* ================================================================
   URL Shortener — style.css
   Design language: matches navpage (Syne + JetBrains Mono, teal accent,
   surface-based dark/light theming, glass-morphism header, dot-grid bg)
   ================================================================ */

/* Fonts — Google Fonts fallback for standalone / dev use.
   For strict local-serve, replace with local @font-face from
   navpage/fetch_fonts.py or self-hosted woff2 files.
@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;600;700;800&family=JetBrains+Mono:ital,wght@0,300;0,400;0,500;0,600;1,300&display=swap');
*/

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
a { text-decoration: none; color: inherit; }
svg { display: block; flex-shrink: 0; }
ul, ol { list-style: none; }
input, select { font: inherit; }

/* --- Tokens (dark default) --- */
:root {
  color-scheme: dark;
  --bg:         #121212;
  --bg-rgb:     18, 18, 18;
  --surface:    #1e1e1e;
  --surface-2:  #272727;
  --surface-3:  #323232;
  --border:     rgba(255, 255, 255, 0.12);
  --border-hi:  rgba(255, 255, 255, 0.24);
  --fg:         #e6e1e5;
  --fg-2:       #cac4d0;
  --fg-3:       #79747e;
  --accent:     #2dd4bf;
  --accent-rgb: 45, 212, 191;
  --accent-dim: rgba(45, 212, 191, 0.15);
  --accent-glow: rgba(45, 212, 191, 0.18);
  --danger:     #f87171;
  --danger-dim: rgba(248, 113, 113, 0.15);
  --shadow-sm:  0 1px 2px rgba(0,0,0,0.35);
  --shadow:     0 2px 8px rgba(0,0,0,0.30), 0 1px 2px rgba(0,0,0,0.35);
  --shadow-lg:  0 8px 28px rgba(0,0,0,0.40), 0 2px 6px rgba(0,0,0,0.30);
  --radius:     12px;
  --radius-sm:  8px;
  --radius-xs:  6px;
  --font-ui:    'Syne', 'Noto Sans SC', system-ui, sans-serif;
  --font-mono:  'JetBrains Mono', 'Noto Sans SC', 'Cascadia Code', 'Fira Code', monospace;
  --ease:       cubic-bezier(0.4, 0, 0.2, 1);
  --dur:        180ms;
}

/* --- Light (prefers-color-scheme) --- */
@media (prefers-color-scheme: light) {
  :root {
    color-scheme: light;
    --bg:         #eeeef2;
    --bg-rgb:     238, 238, 242;
    --surface:    #ffffff;
    --surface-2:  #f4f4f8;
    --surface-3:  #e8e8ee;
    --border:     rgba(0, 0, 0, 0.07);
    --border-hi:  rgba(0, 0, 0, 0.14);
    --fg:         #16161e;
    --fg-2:       #5a5a6e;
    --fg-3:       #9898aa;
    --accent:     #0d9488;
    --accent-rgb: 13, 148, 136;
    --accent-dim: rgba(13, 148, 136, 0.1);
    --accent-glow: rgba(13, 148, 136, 0.14);
    --danger:     #dc2626;
    --danger-dim: rgba(220, 38, 38, 0.1);
    --shadow-sm:  0 1px 2px rgba(0,0,0,0.06);
    --shadow:     0 2px 8px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.05);
    --shadow-lg:  0 8px 28px rgba(0,0,0,0.1), 0 2px 6px rgba(0,0,0,0.06);
  }
}

/* --- data-theme overrides --- */
:root[data-theme="light"] {
  color-scheme: light;
  --bg:         #eeeef2;
  --bg-rgb:     238, 238, 242;
  --surface:    #ffffff;
  --surface-2:  #f4f4f8;
  --surface-3:  #e8e8ee;
  --border:     rgba(0, 0, 0, 0.07);
  --border-hi:  rgba(0, 0, 0, 0.14);
  --fg:         #16161e;
  --fg-2:       #5a5a6e;
  --fg-3:       #9898aa;
  --accent:     #0d9488;
  --accent-rgb: 13, 148, 136;
  --accent-dim: rgba(13, 148, 136, 0.1);
  --accent-glow: rgba(13, 148, 136, 0.14);
  --danger:     #dc2626;
  --danger-dim: rgba(220, 38, 38, 0.1);
  --shadow-sm:  0 1px 2px rgba(0,0,0,0.06);
  --shadow:     0 2px 8px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.05);
  --shadow-lg:  0 8px 28px rgba(0,0,0,0.1), 0 2px 6px rgba(0,0,0,0.06);
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg:         #121212;
  --bg-rgb:     18, 18, 18;
  --surface:    #1e1e1e;
  --surface-2:  #272727;
  --surface-3:  #323232;
  --border:     rgba(255, 255, 255, 0.12);
  --border-hi:  rgba(255, 255, 255, 0.24);
  --fg:         #e6e1e5;
  --fg-2:       #cac4d0;
  --fg-3:       #79747e;
  --accent:     #2dd4bf;
  --accent-rgb: 45, 212, 191;
  --accent-dim: rgba(45, 212, 191, 0.15);
  --accent-glow: rgba(45, 212, 191, 0.18);
  --danger:     #f87171;
  --danger-dim: rgba(248, 113, 113, 0.15);
  --shadow-sm:  0 1px 2px rgba(0,0,0,0.35);
  --shadow:     0 2px 8px rgba(0,0,0,0.30), 0 1px 2px rgba(0,0,0,0.35);
  --shadow-lg:  0 8px 28px rgba(0,0,0,0.40), 0 2px 6px rgba(0,0,0,0.30);
}

/* --- Base --- */
html { font-size: 16px; height: 100%; }

body {
  font-family: var(--font-mono);
  font-size: 14px;
  background: var(--bg);
  color: var(--fg);
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

#bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
  color: var(--fg);
}

/* ================================================================
   HEADER
   ================================================================ */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 16px;
  padding: 0 28px;
  height: 58px;
  background: rgba(var(--bg-rgb), 0.82);
  backdrop-filter: blur(20px) saturate(1.6);
  -webkit-backdrop-filter: blur(20px) saturate(1.6);
  border-bottom: 1px solid var(--border);
  transition: background var(--dur) var(--ease);
}

.logo {
  display: flex;
  align-items: center;
  gap: 9px;
  flex-shrink: 0;
  user-select: none;
}
.logo-glyph { font-size: 20px; color: var(--accent); line-height: 1; letter-spacing: -0.02em; }
.logo-name {
  font-family: var(--font-ui);
  font-weight: 800;
  font-size: 17px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg);
}

.header-right { display: flex; align-items: center; gap: 10px; margin-left: auto; min-width: 0; }

/* Theme toggle */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  flex-shrink: 0;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border);
  color: var(--fg-2);
  background: transparent;
  transition:
    border-color var(--dur) var(--ease),
    color        var(--dur) var(--ease),
    background   var(--dur) var(--ease),
    transform    100ms      var(--ease);
}
.theme-toggle:hover { border-color: var(--border-hi); color: var(--accent); background: var(--surface-2); }
.theme-toggle:active { transform: scale(0.9); transition-duration: 60ms; }

/* API key input */
.api-key-wrap {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px 5px 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 99px;
  transition:
    border-color var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}
.api-key-wrap:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
.key-icon { color: var(--fg-3); flex-shrink: 0; }
.api-key-input {
  width: 100px;
  border: none;
  outline: none;
  background: transparent;
  color: var(--fg);
  font-family: var(--font-mono);
  font-size: 12px;
  caret-color: var(--accent);
}
.api-key-input::placeholder { color: var(--fg-3); }

/* ================================================================
   MAIN
   ================================================================ */
main {
  position: relative;
  z-index: 1;
  max-width: 960px;
  margin: 0 auto;
  padding: 60px 28px 72px;
}

/* ================================================================
   URL BAR
   ================================================================ */
.url-section {
  display: flex;
  justify-content: center;
  margin-bottom: 36px;
}

.url-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  max-width: 640px;
  padding: 12px 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 99px;
  cursor: text;
  box-shadow: var(--shadow);
  transition:
    border-color var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}
.url-bar:focus-within {
  border-color: var(--accent);
  box-shadow: var(--shadow-lg), 0 0 0 3px var(--accent-glow);
}
.url-icon { color: var(--fg-3); display: flex; align-items: center; flex-shrink: 0; }
.url-input {
  flex: 1;
  min-width: 0;
  border: none;
  outline: none;
  background: transparent;
  color: var(--fg);
  font-family: var(--font-mono);
  font-size: 14px;
  caret-color: var(--accent);
}
.url-input::placeholder { color: var(--fg-3); }
.url-status {
  font-size: 11px;
  color: var(--fg-3);
  flex-shrink: 0;
  white-space: nowrap;
  transition: color var(--dur);
}
.url-status.ok { color: var(--accent); }
.url-status.err { color: var(--danger); }

/* ================================================================
   METADATA CARD (single URL result)
   ================================================================ */
.meta-card {
  max-width: 640px;
  margin: 0 auto 36px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  animation: fade-up 250ms var(--ease) both;
}
@keyframes fade-up {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.meta-card .meta-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 18px;
  border-bottom: 1px solid var(--border);
  background: var(--surface-2);
}
.meta-card .meta-title {
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-3);
}
.meta-card .meta-copy-btn {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: 99px;
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--accent);
  border: 1px solid rgba(var(--accent-rgb), 0.3);
  background: var(--accent-dim);
  cursor: pointer;
  transition: background var(--dur), border-color var(--dur);
}
.meta-card .meta-copy-btn:hover {
  background: rgba(var(--accent-rgb), 0.25);
  border-color: rgba(var(--accent-rgb), 0.5);
}

.meta-table {
  width: 100%;
  border-collapse: collapse;
}
.meta-table tr { border-bottom: 1px solid var(--border); }
.meta-table tr:last-child { border-bottom: none; }
.meta-table th {
  text-align: left;
  padding: 10px 18px;
  width: 130px;
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 12px;
  color: var(--fg-3);
  letter-spacing: 0.04em;
  vertical-align: top;
  white-space: nowrap;
}
.meta-table td {
  padding: 10px 18px;
  font-size: 13px;
  color: var(--fg-2);
  word-break: break-all;
}
.meta-table td a {
  color: var(--accent);
  text-decoration: none;
  transition: opacity var(--dur);
}
.meta-table td a:hover { opacity: 0.8; text-decoration: underline; }

/* ================================================================
   ADMIN TABLE
   ================================================================ */
.admin-panel {
  animation: fade-up 250ms var(--ease) both;
}
.admin-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}
.admin-panel-title {
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}
.admin-panel-count {
  font-size: 11px;
  color: var(--fg-3);
  letter-spacing: 0.02em;
}

.admin-table-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
}
.admin-table thead th {
  position: sticky;
  top: 0;
  padding: 10px 14px;
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-3);
  background: var(--surface-2);
  border-bottom: 1px solid var(--border);
  text-align: left;
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
  transition: color var(--dur);
}
.admin-table thead th:hover { color: var(--fg); }
.admin-table thead th.sorted { color: var(--accent); }
.admin-table thead th .sort-arrow {
  display: inline-block;
  margin-left: 4px;
  font-size: 10px;
  opacity: 0.5;
  transition: opacity var(--dur);
}
.admin-table thead th.sorted .sort-arrow { opacity: 1; }
.admin-table thead th.no-sort { cursor: default; }
.admin-table thead th.no-sort:hover { color: var(--fg-3); }

/* Column widths */
.admin-table .col-short    { width: 22%; }
.admin-table .col-original { width: 34%; }
.admin-table .col-visits   { width: 8%; text-align: right; }
.admin-table .col-created  { width: 14%; }
.admin-table .col-retention{ width: 10%; text-align: right; }
.admin-table .col-actions  { width: 12%; text-align: right; }

.admin-table tbody tr {
  border-bottom: 1px solid var(--border);
  transition: background var(--dur);
}
.admin-table tbody tr:last-child { border-bottom: none; }
.admin-table tbody tr:hover { background: var(--surface-2); }

.admin-table td {
  padding: 9px 14px;
  font-size: 12px;
  color: var(--fg-2);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  vertical-align: middle;
}
.admin-table td.r { text-align: right; }
.admin-table td a {
  color: var(--accent);
  transition: opacity var(--dur);
}
.admin-table td a:hover { opacity: 0.8; text-decoration: underline; }
.admin-table td .original-url {
  color: var(--fg-2);
  font-style: italic;
  font-weight: 300;
}

/* Row actions */
.row-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 4px;
  opacity: 0;
  transition: opacity var(--dur);
}
.admin-table tbody tr:hover .row-actions { opacity: 1; }

.btn-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border);
  color: var(--fg-3);
  background: transparent;
  transition:
    border-color var(--dur),
    color var(--dur),
    background var(--dur),
    transform 100ms var(--ease);
}
.btn-icon:hover {
  border-color: var(--border-hi);
  color: var(--accent);
  background: var(--surface-3);
}
.btn-icon:active { transform: scale(0.9); }
.btn-icon.btn-delete:hover {
  color: var(--danger);
  border-color: var(--danger);
  background: var(--danger-dim);
}

/* ================================================================
   PAGINATION
   ================================================================ */
.pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  border-top: 1px solid var(--border);
  background: var(--surface-2);
  font-size: 11px;
  color: var(--fg-3);
}
.pagination-info {
  letter-spacing: 0.02em;
}
.pagination-controls {
  display: flex;
  align-items: center;
  gap: 6px;
}
.pagination-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  height: 28px;
  padding: 0 8px;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border);
  color: var(--fg-2);
  font-size: 11px;
  font-family: var(--font-mono);
  background: transparent;
  cursor: pointer;
  transition:
    border-color var(--dur),
    color var(--dur),
    background var(--dur);
}
.pagination-btn:hover:not(:disabled) {
  border-color: var(--border-hi);
  color: var(--fg);
  background: var(--surface-3);
}
.pagination-btn:disabled {
  opacity: 0.35;
  cursor: default;
}
.pagination-btn.active {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);
}

.page-size-select {
  padding: 4px 8px;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--fg-2);
  font-family: var(--font-mono);
  font-size: 11px;
  outline: none;
  cursor: pointer;
  transition: border-color var(--dur);
}
.page-size-select:focus { border-color: var(--accent); }
.page-size-select option { background: var(--surface); color: var(--fg); }

/* ================================================================
   EMPTY STATE
   ================================================================ */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 140px;
  color: var(--fg-3);
  font-size: 13px;
  text-align: center;
  gap: 6px;
  letter-spacing: 0.02em;
}
.empty-state svg { opacity: 0.3; margin-bottom: 4px; }

/* ================================================================
   TOAST
   ================================================================ */
.toast {
  position: fixed;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  padding: 8px 20px;
  background: var(--surface-3);
  border: 1px solid var(--border-hi);
  border-radius: 99px;
  font-size: 12px;
  font-family: var(--font-mono);
  color: var(--fg);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  pointer-events: none;
  z-index: 1000;
  transition:
    opacity 200ms var(--ease),
    transform 200ms var(--ease);
}
.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}

/* ================================================================
   FOOTER
   ================================================================ */
footer {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 24px 28px 32px;
  border-top: 1px solid var(--border);
  color: var(--fg-3);
  font-size: 11px;
  letter-spacing: 0.04em;
}

/* ================================================================
   RESPONSIVE
   ================================================================ */
@media (max-width: 640px) {
  header { flex-wrap: wrap; height: auto; padding: 10px 16px; gap: 10px; }
  .header-right { width: 100%; order: 3; margin-left: 0; justify-content: flex-end; }
  main { padding: 30px 16px 56px; }
  .url-bar { padding: 10px 14px; }
  .url-input { font-size: 13px; }
  .api-key-input { width: 80px; }
  .admin-table-wrap { overflow-x: auto; }
  .admin-table { min-width: 700px; }
  .meta-table th { width: 100px; padding: 8px 12px; }
  .meta-table td { padding: 8px 12px; }
  footer { padding: 20px 16px 28px; }
}

@media (min-width: 641px) and (max-width: 960px) {
  main { max-width: 800px; }
}

/* ================================================================
   SCROLLBAR & SELECTION
   ================================================================ */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-hi); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: var(--fg-3); }

::selection { background: var(--accent-dim); color: var(--fg); }