/* 大聪明齐活台：全站统一视觉与主题样式 */
:root {
  color-scheme: light;
  --ui-bg: #f6f7fb;
  --ui-bg-soft: #eef2ff;
  --ui-card: #ffffff;
  --ui-card-soft: #f8fafc;
  --ui-text: #111827;
  --ui-muted: #64748b;
  --ui-border: #e2e8f0;
  --ui-primary: #3b5bff;
  --ui-primary-2: #7c3aed;
  --ui-primary-text: #ffffff;
  --ui-danger-bg: #fff1f2;
  --ui-danger-text: #be123c;
  --ui-ghost: #eef2ff;
  --ui-shadow: 0 10px 30px rgba(15, 23, 42, .08);
  --ui-shadow-hover: 0 16px 40px rgba(15, 23, 42, .12);
  --ui-radius: 18px;
  --ui-radius-sm: 12px;

  --bg: var(--ui-bg);
  --card: var(--ui-card);
  --text: var(--ui-text);
  --muted: var(--ui-muted);
  --border: var(--ui-border);
  --primary: var(--ui-primary);
  --primaryText: var(--ui-primary-text);
  --danger: var(--ui-danger-bg);
  --ghost: var(--ui-ghost);
}

* {
  box-sizing: border-box;
}

body {
  background:
    radial-gradient(circle at top left, rgba(59, 91, 255, .08), transparent 34rem),
    radial-gradient(circle at top right, rgba(124, 58, 237, .06), transparent 30rem),
    var(--ui-bg) !important;
  color: var(--ui-text) !important;
}

.wrap {
  width: min(100%, 960px);
}

h1 {
  letter-spacing: -.03em;
}

h2, h3 {
  letter-spacing: -.02em;
}

.sub,
.muted,
.hint,
label,
.back,
footer,
.site-footer,
.card p,
.result,
.box,
.label,
.stats,
.sponsor {
  color: var(--ui-muted) !important;
}

.back {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 7px 10px;
  border: 1px solid transparent;
  border-radius: 999px;
  transition: background .15s ease, border-color .15s ease, color .15s ease;
}

.back:hover {
  background: rgba(255, 255, 255, .72);
  border-color: var(--ui-border);
  color: var(--ui-text) !important;
}

.hero,
.section,
.card,
.result,
.box,
.preview,
.output-wrap,
.panel,
.qr-card,
.item {
  background-color: var(--ui-card) !important;
  border-color: var(--ui-border) !important;
  color: var(--ui-text) !important;
  box-shadow: var(--ui-shadow) !important;
}

.card,
.result,
.box,
.preview,
.output-wrap,
.panel,
.qr-card,
.item {
  border: 1px solid var(--ui-border);
  border-radius: var(--ui-radius) !important;
}

a.card,
.sponsor,
.privacy-entry {
  transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease, background .15s ease;
}

a.card:hover,
.sponsor:hover,
.privacy-entry:hover {
  transform: translateY(-2px);
  box-shadow: var(--ui-shadow-hover) !important;
  border-color: rgba(59, 91, 255, .22) !important;
}

input,
textarea,
select {
  background: #ffffff !important;
  color: var(--ui-text) !important;
  border-color: var(--ui-border) !important;
  transition: border-color .15s ease, box-shadow .15s ease, background .15s ease;
}

input::placeholder,
textarea::placeholder {
  color: #94a3b8 !important;
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--ui-primary) !important;
  box-shadow: 0 0 0 4px rgba(59, 91, 255, .14) !important;
}

button,
.download,
.linkbtn {
  font-weight: 650;
  transition: transform .15s ease, filter .15s ease, box-shadow .15s ease, background .15s ease;
}

button:hover,
.download:hover,
.linkbtn:hover {
  filter: brightness(.98);
  box-shadow: 0 8px 18px rgba(15, 23, 42, .10);
}

button:active,
.download:active,
.linkbtn:active {
  transform: translateY(1px);
}

.primary {
  background: linear-gradient(135deg, var(--ui-primary), var(--ui-primary-2)) !important;
  color: var(--ui-primary-text) !important;
}

.danger {
  background: var(--ui-danger-bg) !important;
  color: var(--ui-danger-text) !important;
}

.ghost,
.download,
.linkbtn {
  background: var(--ui-ghost) !important;
  color: var(--ui-text) !important;
}

.stats,
.privacy-entry {
  border: 1px solid var(--ui-border) !important;
  background: rgba(255, 255, 255, .82) !important;
  backdrop-filter: blur(10px);
}

.stats span,
.num,
strong,
h1,
h2,
h3,
.qr-card h2 {
  color: var(--ui-text) !important;
}

.section-title span {
  background: linear-gradient(135deg, var(--ui-primary), var(--ui-primary-2)) !important;
}

canvas,
img {
  background: #ffffff;
}

.theme-picker {
  position: fixed;
  top: 18px;
  right: 18px;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px;
  border: 1px solid rgba(148, 163, 184, .28);
  border-radius: 999px;
  background: rgba(255, 255, 255, .88);
  color: #64748b;
  font-size: 13px;
  line-height: 1;
  box-shadow: 0 10px 26px rgba(15, 23, 42, .10);
  backdrop-filter: blur(12px);
}

.theme-picker > span {
  padding-left: 4px;
  white-space: nowrap;
}

.theme-buttons {
  display: flex;
  gap: 4px;
  padding: 3px;
  border-radius: 999px;
  background: #eef2f7;
}

.theme-buttons button {
  border: 0;
  border-radius: 999px;
  padding: 7px 10px;
  background: transparent;
  color: #64748b;
  font-size: 13px;
  line-height: 1;
  cursor: pointer;
  box-shadow: none;
}

.theme-buttons button:hover {
  color: #334155;
  box-shadow: none;
}

.theme-buttons button.active {
  background: #ffffff;
  color: #111827;
  font-weight: 700;
  box-shadow: 0 4px 12px rgba(15, 23, 42, .10);
}

.theme-buttons button:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(59, 91, 255, .18);
}

html[data-theme="dark"] {
  color-scheme: dark;
  --ui-bg: #0b1020;
  --ui-bg-soft: #111827;
  --ui-card: #111827;
  --ui-card-soft: #0f172a;
  --ui-text: #e5e7eb;
  --ui-muted: #a5b4c8;
  --ui-border: #334155;
  --ui-primary: #8b5cf6;
  --ui-primary-2: #3b82f6;
  --ui-primary-text: #ffffff;
  --ui-danger-bg: #3f2630;
  --ui-danger-text: #fecdd3;
  --ui-ghost: #1f2937;
  --ui-shadow: 0 12px 32px rgba(0, 0, 0, .28);
  --ui-shadow-hover: 0 18px 46px rgba(0, 0, 0, .34);

  --bg: var(--ui-bg);
  --card: var(--ui-card);
  --text: var(--ui-text);
  --muted: var(--ui-muted);
  --border: var(--ui-border);
  --primary: var(--ui-primary);
  --primaryText: var(--ui-primary-text);
  --danger: var(--ui-danger-bg);
  --ghost: var(--ui-ghost);
}

html[data-theme="dark"] body {
  background:
    radial-gradient(circle at top left, rgba(139, 92, 246, .12), transparent 34rem),
    radial-gradient(circle at top right, rgba(59, 130, 246, .10), transparent 30rem),
    var(--ui-bg) !important;
  color: var(--ui-text) !important;
}

html[data-theme="dark"] .hero,
html[data-theme="dark"] .section,
html[data-theme="dark"] .card,
html[data-theme="dark"] .sponsor,
html[data-theme="dark"] .stats,
html[data-theme="dark"] .result,
html[data-theme="dark"] .box,
html[data-theme="dark"] .preview,
html[data-theme="dark"] .output-wrap,
html[data-theme="dark"] .panel,
html[data-theme="dark"] .qr-card,
html[data-theme="dark"] .item {
  background-color: var(--ui-card) !important;
  border-color: var(--ui-border) !important;
  color: var(--ui-text) !important;
  box-shadow: var(--ui-shadow) !important;
}

html[data-theme="dark"] a {
  color: inherit;
}

html[data-theme="dark"] .back,
html[data-theme="dark"] footer,
html[data-theme="dark"] .site-footer,
html[data-theme="dark"] .sub,
html[data-theme="dark"] .muted,
html[data-theme="dark"] .hint,
html[data-theme="dark"] label,
html[data-theme="dark"] .stats,
html[data-theme="dark"] .label {
  color: var(--ui-muted) !important;
}

html[data-theme="dark"] .card p,
html[data-theme="dark"] .sponsor,
html[data-theme="dark"] .result,
html[data-theme="dark"] .box {
  color: var(--ui-muted) !important;
}

html[data-theme="dark"] h1,
html[data-theme="dark"] h2,
html[data-theme="dark"] h3,
html[data-theme="dark"] strong,
html[data-theme="dark"] .stats span,
html[data-theme="dark"] .qr-card h2,
html[data-theme="dark"] .num {
  color: var(--ui-text) !important;
}

html[data-theme="dark"] input,
html[data-theme="dark"] textarea,
html[data-theme="dark"] select {
  background: var(--ui-card-soft) !important;
  color: var(--ui-text) !important;
  border-color: var(--ui-border) !important;
  box-shadow: none !important;
}

html[data-theme="dark"] input::placeholder,
html[data-theme="dark"] textarea::placeholder {
  color: #64748b !important;
}

html[data-theme="dark"] input:focus,
html[data-theme="dark"] textarea:focus,
html[data-theme="dark"] select:focus {
  outline: none;
  border-color: var(--ui-primary) !important;
  box-shadow: 0 0 0 4px rgba(139, 92, 246, .18) !important;
}

html[data-theme="dark"] .primary {
  background: linear-gradient(135deg, var(--ui-primary), var(--ui-primary-2)) !important;
  color: var(--ui-primary-text) !important;
}

html[data-theme="dark"] .danger {
  background: var(--ui-danger-bg) !important;
  color: var(--ui-danger-text) !important;
}

html[data-theme="dark"] .ghost,
html[data-theme="dark"] .download,
html[data-theme="dark"] .linkbtn {
  background: var(--ui-ghost) !important;
  border-color: var(--ui-border) !important;
  color: var(--ui-text) !important;
}

html[data-theme="dark"] canvas,
html[data-theme="dark"] img {
  background: #ffffff;
}

html[data-theme="dark"] .section-title span {
  background: linear-gradient(135deg, var(--ui-primary), var(--ui-primary-2)) !important;
}

html[data-theme="dark"] .privacy-entry {
  background: var(--ui-card) !important;
  border-color: var(--ui-border) !important;
  color: var(--ui-muted) !important;
  box-shadow: var(--ui-shadow) !important;
}

html[data-theme="dark"] .privacy-entry:hover {
  color: var(--ui-text) !important;
}

html[data-theme="dark"] .theme-picker {
  background: rgba(15, 23, 42, .86) !important;
  color: var(--ui-muted) !important;
  border-color: var(--ui-border) !important;
  box-shadow: 0 10px 30px rgba(0, 0, 0, .32) !important;
}

html[data-theme="dark"] .theme-buttons {
  background: #0b1222 !important;
}

html[data-theme="dark"] .theme-buttons button {
  color: var(--ui-muted) !important;
}

html[data-theme="dark"] .theme-buttons button:hover {
  color: var(--ui-text) !important;
}

html[data-theme="dark"] .theme-buttons button.active {
  background: linear-gradient(135deg, var(--ui-primary), var(--ui-primary-2)) !important;
  color: #ffffff !important;
  box-shadow: 0 6px 16px rgba(139, 92, 246, .28) !important;
}

@media (max-width: 640px) {
  body {
    padding: 16px !important;
  }

  .wrap {
    padding-top: 18px !important;
  }

  h1 {
    font-size: 28px !important;
  }

  .theme-picker {
    position: static;
    width: fit-content;
    margin: 0 0 14px auto;
  }

  .theme-picker > span {
    display: none;
  }

  .theme-buttons button {
    padding: 8px 9px;
  }

  .card,
  .result,
  .box,
  .preview,
  .output-wrap,
  .panel,
  .qr-card,
  .item {
    border-radius: 16px !important;
  }
}

.section{background:transparent!important;border:none!important;box-shadow:none!important;padding:0!important}
html[data-theme="dark"] .section{background:transparent!important;border:none!important;box-shadow:none!important;padding:0!important}

.hero{background:transparent!important;border:none!important;box-shadow:none!important;padding:0!important}
html[data-theme="dark"] .hero{background:transparent!important;border:none!important;box-shadow:none!important;padding:0!important}

html{min-height:100%;background:var(--ui-bg)!important}
body{min-height:100vh;background-repeat:no-repeat!important;background-attachment:fixed!important}
html[data-theme="dark"]{background:var(--ui-bg)!important}

html[data-theme="dark"] .scale div{background:var(--ui-card)!important;border-color:var(--ui-border)!important;color:var(--ui-muted)!important;box-shadow:none!important}

html[data-theme="dark"] .contact-card{background:var(--ui-card)!important;border-color:var(--ui-border)!important;color:var(--ui-text)!important}
html[data-theme="dark"] .contact-card h2,html[data-theme="dark"] .contact-card strong{color:var(--ui-text)!important}
html[data-theme="dark"] .contact-card .muted,html[data-theme="dark"] .contact-list{color:var(--ui-muted)!important}