/* ---------- design tokens ---------- */
:root {
  color-scheme: light dark;

  --fg: #09090b;
  --fg-muted: #71717a;
  --bg: #ffffff;
  --bg-subtle: #f4f4f5;
  --bg-hover: #e4e4e7;
  --border: #e4e4e7;
  --border-strong: #d4d4d8;
  --accent: #14b8a6;
  --accent-fg: #ffffff;
  --accent-soft: #ccfbf1;
  --danger: #dc2626;
  --danger-soft: #fee2e2;
  --success: #14b8a6;

  --radius: 6px;
  --radius-sm: 4px;
  --radius-lg: 10px;
  --space: 8px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);

  --font-body:
    -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --font-mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --fg: #f4f4f5;
    --fg-muted: #a1a1aa;
    --bg: #09090b;
    --bg-subtle: #18181b;
    --bg-hover: #27272a;
    --border: #27272a;
    --border-strong: #3f3f46;
    --accent: #2dd4bf;
    --accent-fg: #09090b;
    --accent-soft: rgba(45, 212, 191, 0.15);
    --danger: #f87171;
    --danger-soft: rgba(248, 113, 113, 0.15);
    --success: #2dd4bf;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  }
}

/* ---------- base ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}
html,
body {
  margin: 0;
  padding: 0;
}
body {
  font: 15px/1.55 var(--font-body);
  background: var(--bg);
  color: var(--fg);
  -webkit-font-smoothing: antialiased;
}
a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

.container {
  max-width: 640px;
  margin: 0 auto;
  padding: 40px 20px 60px;
}
.container.wide {
  max-width: 1080px;
}
.container.narrow {
  max-width: 440px;
}

.mono {
  font-family: var(--font-mono);
}
.muted {
  color: var(--fg-muted);
}
.small {
  font-size: 13px;
}
.center {
  text-align: center;
}
.error {
  color: var(--danger);
}

/* ---------- header ---------- */
.page-head {
  margin-bottom: 24px;
}
.page-head h1 {
  margin: 0 0 4px;
  font-size: 28px;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.page-head p {
  margin: 0;
}

.admin-head,
.paste-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.paste-actions {
  display: flex;
  gap: 8px;
}

/* ---------- token field ---------- */
.token-field {
  display: block;
  margin-bottom: 24px;
}
.token-field span {
  display: block;
  font-size: 12px;
  color: var(--fg-muted);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.token-field input {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-subtle);
  color: var(--fg);
  font: inherit;
  font-family: var(--font-mono);
  font-size: 13px;
}
.token-field input:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--bg);
}

/* ---------- tabs ---------- */
.tabs {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 24px;
}
.tabs button {
  background: transparent;
  color: var(--fg-muted);
  border: none;
  border-bottom: 2px solid transparent;
  padding: 10px 14px;
  font: inherit;
  font-weight: 500;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-radius: 0;
  margin-bottom: -1px;
}
.tabs button:hover {
  color: var(--fg);
}
.tabs button.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}
.tabs svg {
  flex-shrink: 0;
}

.tab {
  display: none;
}
.tab.active {
  display: block;
}

/* ---------- forms ---------- */
.field {
  display: block;
  margin-bottom: 12px;
}
.field > span {
  display: block;
  font-size: 12px;
  color: var(--fg-muted);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.field input,
.field textarea,
.field select {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  color: var(--fg);
  font: inherit;
  transition:
    border-color 0.1s,
    background 0.1s;
}
.field input:focus,
.field textarea:focus,
.field select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.field textarea {
  font-family: var(--font-mono);
  font-size: 13px;
  resize: vertical;
  min-height: 200px;
}

.check {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  cursor: pointer;
  padding: 4px 0;
}
.check input {
  margin: 0;
}

/* ---------- dropzone ---------- */
.dropzone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 40px 20px;
  border: 2px dashed var(--border-strong);
  border-radius: var(--radius-lg);
  background: var(--bg-subtle);
  cursor: pointer;
  transition: all 0.12s ease;
  text-align: center;
  margin-bottom: 16px;
}
.dropzone:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
}
.dropzone.dragover {
  border-color: var(--accent);
  background: var(--accent-soft);
  transform: scale(1.005);
}
.dropzone-icon {
  color: var(--fg-muted);
}
.dropzone:hover .dropzone-icon,
.dropzone.dragover .dropzone-icon {
  color: var(--accent);
}
.dropzone-title {
  margin: 0;
  font-weight: 500;
}
.dropzone-info {
  margin: 0;
}

/* ---------- options details ---------- */
.options {
  margin: 16px 0;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-subtle);
}
.options summary {
  padding: 10px 14px;
  cursor: pointer;
  font-size: 13px;
  color: var(--fg-muted);
  user-select: none;
  font-weight: 500;
}
.options summary:hover {
  color: var(--fg);
}
.options[open] summary {
  border-bottom: 1px solid var(--border);
}
.options-grid {
  padding: 14px;
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}
.options-grid .check {
  grid-column: 1 / -1;
}

/* ---------- buttons ---------- */
button,
.link-btn {
  font: inherit;
  cursor: pointer;
}
button.primary {
  padding: 10px 18px;
  background: var(--accent);
  color: var(--accent-fg);
  border: none;
  border-radius: var(--radius);
  font-weight: 500;
  transition: filter 0.1s;
}
button.primary:hover:not(:disabled) {
  filter: brightness(1.08);
}
button.primary:disabled {
  opacity: 0.6;
  cursor: wait;
}

button.ghost {
  padding: 6px 10px;
  background: transparent;
  color: var(--fg-muted);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 13px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
button.ghost:hover {
  color: var(--fg);
  background: var(--bg-hover);
  border-color: var(--border-strong);
}

.link-btn {
  padding: 6px 10px;
  color: var(--fg-muted);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 13px;
}
.link-btn:hover {
  color: var(--fg);
  background: var(--bg-hover);
  text-decoration: none;
}

.icon-btn {
  padding: 8px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--fg-muted);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s;
}
.icon-btn:hover {
  color: var(--fg);
  background: var(--bg-hover);
  border-color: var(--border-strong);
}
.icon-btn.ok {
  color: var(--success);
  border-color: var(--success);
  background: transparent;
}

.danger-btn {
  padding: 6px;
  background: transparent;
  color: var(--fg-muted);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
}
.danger-btn:hover {
  color: var(--danger);
  background: var(--danger-soft);
  border-color: var(--danger);
}

/* ---------- result card ---------- */
.result {
  display: block;
  margin: 24px 0 8px;
  padding: 16px;
  border: 1px solid var(--border);
  border-left: 3px solid var(--success);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: var(--bg-subtle);
  animation: fadeIn 0.18s ease-out;
}
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(4px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}
.result-main {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.result-info {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.url-row {
  display: flex;
  gap: 6px;
  align-items: stretch;
}
.url-row input {
  flex: 1;
  min-width: 0;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  color: var(--fg);
  font: inherit;
  font-family: var(--font-mono);
  font-size: 13px;
}
.url-row input:focus {
  outline: none;
  border-color: var(--accent);
}

.error-box {
  margin: 16px 0;
  padding: 12px 14px;
  border: 1px solid var(--danger);
  background: var(--danger-soft);
  color: var(--danger);
  border-radius: var(--radius);
  font-size: 14px;
}

/* ---------- footer ---------- */
.page-foot {
  margin-top: 40px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  font-size: 13px;
}
.page-foot a {
  color: var(--fg-muted);
}

/* ---------- paste view ---------- */
pre.paste {
  padding: 16px;
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-word;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.5;
  margin: 0;
}

/* ---------- card (password prompt / auth) ---------- */
.card {
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg-subtle);
}
.card h1,
.card h2 {
  margin: 0 0 8px;
  font-size: 20px;
  font-weight: 600;
}
.stack {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.stack .field {
  margin: 0;
}

/* ---------- admin table ---------- */
.toolbar {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.filter-input {
  flex: 1;
  min-width: 200px;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-subtle);
  color: var(--fg);
  font: inherit;
  font-size: 14px;
}
.filter-input:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--bg);
}
.toolbar-actions {
  display: flex;
  gap: 8px;
  align-items: center;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.admin-table th,
.admin-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: middle;
}
.admin-table thead th {
  font-weight: 500;
  font-size: 11px;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: var(--bg-subtle);
}
.admin-table tbody tr:last-child td {
  border-bottom: none;
}
.admin-table tbody tr:hover {
  background: var(--bg-hover);
}
.admin-table .num {
  text-align: right;
  font-variant-numeric: tabular-nums;
}
.admin-table .preview {
  max-width: 320px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--fg-muted);
  font-family: var(--font-mono);
  font-size: 12px;
}

.kind {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  background: var(--bg-hover);
  color: var(--fg-muted);
}
.kind-file {
  background: rgba(37, 99, 235, 0.12);
  color: var(--accent);
}
.kind-paste {
  background: rgba(5, 150, 105, 0.12);
  color: var(--success);
}
.kind-url {
  background: rgba(217, 119, 6, 0.12);
  color: #d97706;
}
@media (prefers-color-scheme: dark) {
  .kind-url {
    color: #fbbf24;
    background: rgba(251, 191, 36, 0.15);
  }
}

.tag {
  display: inline-block;
  margin-left: 4px;
  padding: 1px 6px;
  border-radius: 8px;
  font-size: 10px;
  background: var(--bg-hover);
  color: var(--fg-muted);
  font-family: var(--font-mono);
}

/* ---------- responsive ---------- */
@media (max-width: 520px) {
  .container {
    padding: 24px 16px 40px;
  }
  .page-head h1 {
    font-size: 24px;
  }
  .result-main {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  .result-info {
    width: 100%;
  }
  .options-grid {
    grid-template-columns: 1fr;
  }
}