:root {
  --bg0: #f9f6ef;
  --bg1: #eef5ff;
  --ink: #0f2338;
  --muted: rgba(15, 35, 56, 0.72);
  --panel: rgba(255, 255, 255, 0.74);
  --border: rgba(15, 35, 56, 0.14);
  --shadow: rgba(15, 35, 56, 0.12);
  --accent: #d64550;
  --accent2: #1f7a8c;
  --codeBg: #0b1220;
  --codeInk: #e7eefc;
  --codeMuted: rgba(231, 238, 252, 0.72);
  --scrollTrack: rgba(8, 16, 30, 0.92);
  --scrollTrackEdge: rgba(197, 214, 237, 0.16);
  --scrollThumb: rgba(100, 119, 145, 0.9);
  --scrollThumbHover: rgba(119, 140, 168, 0.96);
  --scrollThumbActive: rgba(137, 159, 190, 0.98);
  --radius: 16px;
}

:root[data-theme="dark"] {
  --bg0: #070c13;
  --bg1: #0d1724;
  --ink: #e7eefc;
  --muted: rgba(231, 238, 252, 0.74);
  --panel: rgba(12, 22, 36, 0.78);
  --border: rgba(179, 202, 232, 0.2);
  --shadow: rgba(0, 0, 0, 0.36);
  --accent: #ff6d75;
  --accent2: #52aebf;
  --codeBg: #08111e;
  --codeInk: #e7eefc;
  --codeMuted: rgba(231, 238, 252, 0.72);
  --scrollTrack: rgba(4, 9, 17, 0.92);
  --scrollTrackEdge: rgba(179, 202, 232, 0.16);
  --scrollThumb: rgba(108, 129, 158, 0.88);
  --scrollThumbHover: rgba(126, 147, 177, 0.94);
  --scrollThumbActive: rgba(144, 166, 198, 0.96);
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--bg1);
  position: relative;
  isolation: isolate;
  overflow-x: hidden;
  font-family: "Bahnschrift", "Microsoft YaHei UI", "PingFang SC", "Noto Sans CJK SC", sans-serif;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(1200px 640px at 12% 10%, rgba(31, 122, 140, 0.2), transparent 62%),
    radial-gradient(960px 560px at 88% 0%, rgba(214, 69, 80, 0.16), transparent 58%),
    linear-gradient(180deg, var(--bg0) 0%, var(--bg1) 100%);
  background-repeat: no-repeat;
  background-size: 100% 100%;
}

code {
  font-family: "Cascadia Mono", "JetBrains Mono", Consolas, ui-monospace, monospace;
  font-size: 0.95em;
}

.app {
  max-width: 1180px;
  margin: 0 auto;
  padding: 28px 18px 42px;
}

.hero {
  padding:0 16px 6px 20px;
}

.heroTop {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 10px;
}

.toggles {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.utility {
  padding: 6px 10px;
  border-radius: 10px;
  font-size: 12px;
}

.hero h1 {
  margin: 0 0 10px;
  font-weight: 700;
  letter-spacing: 0.2px;
  font-size: 28px;
}

.subtitle {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
}

.pill {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 999px;
  background: rgba(31, 122, 140, 0.14);
  border: 1px solid rgba(31, 122, 140, 0.22);
  color: rgba(15, 35, 56, 0.9);
  font-size: 0.92em;
  vertical-align: 1px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 12px 40px var(--shadow);
  padding: 14px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.panelHead {
  display: flex;
  gap: 10px;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.panelHead h2 {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.2px;
}

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

button {
  appearance: none;
  border: 1px solid rgba(15, 35, 56, 0.22);
  background: rgba(255, 255, 255, 0.75);
  color: rgba(15, 35, 56, 0.92);
  padding: 8px 12px;
  border-radius: 12px;
  cursor: pointer;
  font-weight: 650;
  letter-spacing: 0.15px;
  transition: transform 120ms ease, box-shadow 120ms ease, background 120ms ease;
}

button:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 18px rgba(15, 35, 56, 0.1);
}

button:active {
  transform: translateY(0px);
}

button.primary {
  border-color: rgba(214, 69, 80, 0.42);
  background: rgba(214, 69, 80, 0.12);
}

button.ghost {
  background: transparent;
}

button.copy {
  border-color: rgba(31, 122, 140, 0.42);
  background: rgba(31, 122, 140, 0.1);
}

textarea {
  width: 100%;
  min-height: 160px;
  resize: vertical;
  overflow: auto;
  padding: 12px 16px 12px 12px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: var(--codeBg);
  background-clip: padding-box;
  color: var(--codeInk);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
  outline: none;
  font-family: "Cascadia Mono", "JetBrains Mono", Consolas, ui-monospace, monospace;
  font-size: 12.5px;
  line-height: 1.46;
  scrollbar-width: thin;
  scrollbar-color: var(--scrollThumb) transparent;
  scrollbar-gutter: stable;
}

textarea#input {
  min-height: 120px;
}

textarea::placeholder {
  color: rgba(231, 238, 252, 0.48);
}

.status {
  margin-top: 10px;
  font-size: 12.5px;
  color: rgba(15, 35, 56, 0.78);
}

.errors {
  margin-top: 10px;
  padding: 10px 12px;
  border-radius: 14px;
  background: rgba(214, 69, 80, 0.08);
  border: 1px solid rgba(214, 69, 80, 0.22);
}

.errors ul {
  margin: 0;
  padding-left: 18px;
  color: rgba(15, 35, 56, 0.86);
  font-size: 12.5px;
  line-height: 1.5;
}

.grid {
  margin-top: 16px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.footer {
  margin-top: 16px;
  padding: 0 6px 8px;
}

.hint {
  margin: 0;
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.55;
}

.footerMeta {
  margin-top: 8px;
  padding-top: 10px;
  border-top: 1px dashed var(--border);
  display: flex;
  gap: 8px 16px;
  flex-wrap: wrap;
  align-items: center;
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.45;
}

.footerGithub,
.footerMade {
  margin: 0;
}

.footerMeta a {
  color: var(--accent2);
  text-decoration: none;
  font-weight: 700;
}

.footerMeta a:hover {
  text-decoration: underline;
}

.heart {
  color: var(--accent);
  font-size: 1.05em;
  vertical-align: -1px;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 18px;
  transform: translateX(-50%);
  padding: 10px 12px;
  border-radius: 999px;
  background: rgba(11, 18, 32, 0.92);
  color: rgba(231, 238, 252, 0.92);
  border: 1px solid rgba(231, 238, 252, 0.16);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.25);
  font-size: 12.5px;
  white-space: nowrap;
}

:root[data-theme="dark"] .pill {
  background: rgba(82, 174, 191, 0.18);
  border: 1px solid rgba(82, 174, 191, 0.34);
  color: rgba(231, 238, 252, 0.92);
}

:root[data-theme="dark"] button {
  border-color: rgba(179, 202, 232, 0.28);
  background: rgba(15, 28, 45, 0.84);
  color: rgba(231, 238, 252, 0.94);
}

:root[data-theme="dark"] button:hover {
  box-shadow: 0 10px 18px rgba(0, 0, 0, 0.26);
}

:root[data-theme="dark"] button.primary {
  border-color: rgba(255, 109, 117, 0.56);
  background: rgba(255, 109, 117, 0.18);
}

:root[data-theme="dark"] button.copy {
  border-color: rgba(82, 174, 191, 0.5);
  background: rgba(82, 174, 191, 0.2);
}

:root[data-theme="dark"] .status {
  color: rgba(231, 238, 252, 0.82);
}

:root[data-theme="dark"] .errors ul {
  color: rgba(231, 238, 252, 0.9);
}

:root[data-theme="dark"] .footerMeta a {
  color: rgba(120, 210, 226, 0.96);
}

:root[data-theme="dark"] .toast {
  background: rgba(6, 12, 22, 0.95);
}

@media (min-width: 980px) {
  .grid {
    grid-template-columns: 1fr 1fr 1fr;
  }

  textarea {
    min-height: 240px;
  }
}