:root {
  --font-sans: "Inter", "Segoe UI", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", "JetBrains Mono", Consolas, "Liberation Mono", monospace;
  --accent: #22d3ee;
  --accent-2: #8b5cf6;
  --radius: 16px;
}

html[data-theme="dark"] {
  --bg: #05080f;
  --glow-1: rgba(34, 211, 238, 0.14);
  --glow-2: rgba(139, 92, 246, 0.16);
  --card: rgba(13, 20, 33, 0.76);
  --card-border: rgba(148, 163, 184, 0.16);
  --card-border-strong: rgba(148, 163, 184, 0.3);
  --text: #e8effa;
  --muted: #8fa3bd;
  --soft: rgba(148, 163, 184, 0.08);
  --textarea-bg: rgba(5, 10, 19, 0.6);
  --shadow: 0 24px 64px rgba(0, 0, 0, 0.5);
  --ok: #34d399;
  --ok-bg: rgba(52, 211, 153, 0.1);
  --ok-border: rgba(52, 211, 153, 0.35);
  --err: #fb7185;
  --err-bg: rgba(251, 113, 133, 0.1);
  --err-border: rgba(251, 113, 133, 0.35);
  color-scheme: dark;
}

html[data-theme="light"] {
  --bg: #edf2f9;
  --glow-1: rgba(6, 182, 212, 0.18);
  --glow-2: rgba(139, 92, 246, 0.18);
  --card: rgba(255, 255, 255, 0.82);
  --card-border: rgba(15, 23, 42, 0.1);
  --card-border-strong: rgba(15, 23, 42, 0.22);
  --text: #0f1b2d;
  --muted: #5b6b84;
  --soft: rgba(15, 23, 42, 0.05);
  --textarea-bg: rgba(255, 255, 255, 0.72);
  --shadow: 0 22px 50px rgba(15, 23, 42, 0.12);
  --ok: #059669;
  --ok-bg: rgba(5, 150, 105, 0.09);
  --ok-border: rgba(5, 150, 105, 0.3);
  --err: #dc2626;
  --err-bg: rgba(220, 38, 38, 0.08);
  --err-border: rgba(220, 38, 38, 0.28);
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.25s ease, color 0.25s ease;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(900px 500px at 12% -10%, var(--glow-1), transparent 65%),
    radial-gradient(760px 520px at 92% 0%, var(--glow-2), transparent 68%);
}

.wrap {
  width: min(1240px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  border-bottom: 1px solid var(--card-border);
  backdrop-filter: blur(12px);
  background: color-mix(in srgb, var(--bg) 72%, transparent);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: inherit;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.18), rgba(139, 92, 246, 0.24));
  border: 1px solid var(--card-border-strong);
  color: var(--accent);
  font-size: 18px;
  box-shadow: 0 8px 24px rgba(34, 211, 238, 0.12);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
}

.brand-text strong {
  font-size: 17px;
  letter-spacing: 0.2px;
}

.brand-text small {
  color: var(--muted);
  font-size: 12.5px;
}

.brand-x {
  color: var(--accent);
  font-weight: 500;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--card-border);
  background: var(--soft);
  color: var(--muted);
  font-size: 12.5px;
}

.pill i {
  color: var(--accent);
}

.icon-btn {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--card-border);
  background: var(--soft);
  color: var(--text);
  font-size: 16px;
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.icon-btn:hover {
  border-color: var(--card-border-strong);
  color: var(--accent);
  transform: translateY(-1px);
}

main.wrap {
  padding: 30px 0 20px;
}

.lede {
  margin: 0 0 22px;
  max-width: 880px;
  color: var(--muted);
  font-size: 14.5px;
}

.alert {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  padding: 12px 16px;
  border-radius: 12px;
  border: 1px solid var(--card-border);
  background: var(--soft);
  font-size: 14px;
  animation: fade-in 0.2s ease;
}

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

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

.alert i {
  flex: 0 0 auto;
  font-size: 15px;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.08fr);
  gap: 18px;
  align-items: stretch;
}

.card {
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  background: var(--card);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.panel {
  display: flex;
  flex-direction: column;
  padding: 18px;
  min-width: 0;
  animation: fade-in 0.35s ease;
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.panel-head h2 {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.3px;
}

.panel-head h2 i {
  color: var(--accent);
  font-size: 14px;
}

.panel-tools {
  display: flex;
  gap: 6px;
}

.mini {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: 8px;
  border: 1px solid transparent;
  background: var(--soft);
  color: var(--muted);
  font-family: var(--font-sans);
  font-size: 12.5px;
  cursor: pointer;
  transition: color 0.18s ease, border-color 0.18s ease, background-color 0.18s ease;
}

.mini i {
  font-size: 12px;
}

.mini:hover {
  color: var(--text);
  border-color: var(--card-border-strong);
  background: color-mix(in srgb, var(--soft) 70%, var(--card));
}

textarea {
  flex: 1;
  width: 100%;
  min-height: 350px;
  padding: 14px 16px;
  border-radius: 12px;
  border: 1px solid var(--card-border);
  background: var(--textarea-bg);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 1.7;
  tab-size: 2;
  resize: vertical;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

textarea::placeholder {
  color: var(--muted);
  opacity: 0.7;
}

textarea:focus {
  border-color: color-mix(in srgb, var(--accent) 55%, var(--card-border));
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 16%, transparent);
}

.panel-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: 12px;
  min-height: 36px;
}

.foot-left,
.foot-right {
  display: flex;
  align-items: center;
  gap: 6px;
}

.foot-right {
  gap: 10px;
  min-width: 0;
}

.foot-right .hint {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.hint {
  color: var(--muted);
  font-size: 12.5px;
}

.primary,
.ghost {
  font-family: var(--font-sans);
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border: none;
  border-radius: 10px;
  background: linear-gradient(135deg, #22d3ee, #8b5cf6);
  color: #04121b;
  font-size: 13.5px;
  font-weight: 700;
  box-shadow: 0 10px 24px rgba(34, 211, 238, 0.22);
}

.primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 30px rgba(34, 211, 238, 0.3);
}

.primary:active {
  transform: translateY(0);
}

.ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: 10px;
  border: 1px solid var(--card-border-strong);
  background: var(--soft);
  color: var(--text);
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
}

.ghost:hover {
  border-color: color-mix(in srgb, var(--accent) 60%, var(--card-border-strong));
  color: var(--accent);
  transform: translateY(-1px);
}

.meta {
  margin-top: 18px;
  padding: 18px;
  animation: fade-in 0.3s ease;
}

.options {
  margin-top: 18px;
  padding: 18px;
  animation: fade-in 0.3s ease;
}

.options h2 {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 14px;
  font-size: 14px;
  font-weight: 600;
}

.options h2 i {
  color: var(--accent);
}

.opt-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 10px;
}

.opt {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 13px;
  border: 1px solid var(--card-border);
  border-radius: 10px;
  background: var(--soft);
  cursor: pointer;
  transition: border-color 0.18s ease, background-color 0.18s ease;
}

.opt:hover {
  border-color: var(--card-border-strong);
}

.opt.is-disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.opt.is-disabled input[type="checkbox"] {
  cursor: not-allowed;
}

.opt input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  position: relative;
  flex: 0 0 auto;
  width: 38px;
  height: 21px;
  margin: 0;
  border-radius: 999px;
  border: 1px solid var(--card-border-strong);
  background: color-mix(in srgb, var(--soft) 80%, var(--bg));
  cursor: pointer;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.opt input[type="checkbox"]::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--muted);
  transition: transform 0.2s ease, background-color 0.2s ease;
}

.opt input[type="checkbox"]:checked {
  border-color: color-mix(in srgb, var(--accent) 70%, var(--card-border-strong));
  background: color-mix(in srgb, var(--accent) 22%, transparent);
}

.opt input[type="checkbox"]:checked::after {
  transform: translateX(17px);
  background: var(--accent);
}

.opt input[type="checkbox"]:focus-visible {
  outline: 2px solid color-mix(in srgb, var(--accent) 60%, transparent);
  outline-offset: 2px;
}

.opt-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.opt-text strong {
  font-size: 13px;
  font-weight: 600;
}

.opt-text small {
  color: var(--muted);
  font-size: 11.5px;
  line-height: 1.45;
}

.meta h2 {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 14px;
  font-size: 14px;
  font-weight: 600;
}

.meta h2 i {
  color: var(--accent);
}

.meta-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  gap: 10px;
}

.meta-item {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--card-border);
  background: var(--soft);
  min-width: 0;
}

.meta-label {
  color: var(--muted);
  font-size: 11.5px;
  letter-spacing: 0.6px;
}

.meta-value {
  font-size: 13px;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.meta-value.mono {
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 500;
}

.site-footer {
  padding: 26px 0 10px;
  color: var(--muted);
  font-size: 12.5px;
  text-align: center;
}

@keyframes fade-in {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 900px) {
  .workspace {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  textarea {
    min-height: 240px;
  }
}

@media (max-width: 560px) {
  .wrap {
    width: calc(100% - 24px);
  }

  .pill {
    display: none;
  }

  .panel {
    padding: 14px;
  }

  .panel-foot {
    flex-wrap: wrap;
  }

  .lede {
    font-size: 13.5px;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}