:root {
  --bg: #f3f7f4;
  --ink: #13281d;
  --ink-soft: #2f4b3f;
  --panel: #ffffff;
  --line: #d5e1da;
  --brand: #0e7a4f;
  --brand-strong: #0a613e;
  --surface-alt: #f2f8f5;
  --desc-bg: #f9fcfa;
  --desc-ink: #274437;
  --hero-glow: #ffffff;
  --bg-top: #e8f4ee;
  --font-main: "Trebuchet MS", "Segoe UI", sans-serif;
}

body[data-theme="theme-2"] {
  --bg: #eef2f6;
  --ink: #1a2531;
  --ink-soft: #3b4d61;
  --panel: #ffffff;
  --line: #d5dce5;
  --brand: #315d8a;
  --brand-strong: #234769;
  --surface-alt: #eef4fb;
  --desc-bg: #f8fbff;
  --desc-ink: #2d4359;
  --hero-glow: #f8fbff;
  --bg-top: #e8eef6;
  --font-main: "Verdana", "Segoe UI", sans-serif;
}

body[data-theme="theme-3"] {
  --bg: #fff7e8;
  --ink: #35210f;
  --ink-soft: #5c3c1f;
  --panel: #fffdf7;
  --line: #ecd8b5;
  --brand: #b06e1c;
  --brand-strong: #8a5210;
  --surface-alt: #fff3df;
  --desc-bg: #fffaf0;
  --desc-ink: #5c3f1c;
  --hero-glow: #fff8e8;
  --bg-top: #fff2dc;
  --font-main: "Georgia", "Times New Roman", serif;
}

body[data-theme="theme-4"] {
  --bg: #fff0f4;
  --ink: #34131d;
  --ink-soft: #5b2936;
  --panel: #fffafe;
  --line: #efced8;
  --brand: #b73f63;
  --brand-strong: #8e2b4a;
  --surface-alt: #ffeef3;
  --desc-bg: #fff8fb;
  --desc-ink: #5f2c3a;
  --hero-glow: #fff8fb;
  --bg-top: #ffe9f0;
  --font-main: "Tahoma", "Segoe UI", sans-serif;
}

body[data-theme="theme-5"] {
  --bg: #121721;
  --ink: #e9f0ff;
  --ink-soft: #b5c3e0;
  --panel: #1a2231;
  --line: #2a3750;
  --brand: #6ea9ff;
  --brand-strong: #4f8ce8;
  --surface-alt: #1f2a3d;
  --desc-bg: #1b2738;
  --desc-ink: #d7e4ff;
  --hero-glow: #1a2231;
  --bg-top: #182032;
  --font-main: "Segoe UI", "Trebuchet MS", sans-serif;
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  font-family: var(--font-main);
  color: var(--ink);
  min-height: 100vh;
  background:
    radial-gradient(circle at 20% 0%, var(--hero-glow), transparent 52%),
    linear-gradient(170deg, var(--bg-top), var(--bg));
  background-repeat: no-repeat;
  background-size: cover;
  transition: background-color 180ms ease, color 180ms ease;
}

body[data-theme="theme-5"] {
  background:
    radial-gradient(circle at 14% -10%, #23314a 0%, transparent 48%),
    radial-gradient(circle at 92% 10%, #1f3559 0%, transparent 40%),
    linear-gradient(170deg, var(--bg-top), var(--bg));
}

.page {
  width: min(980px, 92vw);
  margin: 0 auto;
  padding: 2.25rem 0 3rem;
  display: grid;
  gap: 1rem;
}

.hero {
  padding: 1rem 0 0.25rem;
}

.kicker {
  margin: 0;
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  font-weight: 700;
  color: var(--brand);
}

h1 {
  margin: 0.3rem 0 0.35rem;
  font-size: clamp(2rem, 5vw, 3rem);
}

.subtitle {
  margin: 0;
  color: var(--ink-soft);
}

.theme-switcher {
  margin-top: 0.8rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.theme-btn {
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink-soft);
  border-radius: 999px;
  padding: 0.36rem 0.68rem;
  font: inherit;
  font-size: 0.82rem;
  cursor: pointer;
}

.theme-btn:hover {
  border-color: var(--brand);
  color: var(--brand);
}

.theme-btn.is-active {
  background: var(--brand);
  border-color: var(--brand-strong);
  color: #fff;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1rem;
  box-shadow: 0 10px 26px rgba(13, 74, 46, 0.08);
}

body[data-theme="theme-5"] .panel {
  border-color: #31415f;
  box-shadow:
    0 20px 44px rgba(5, 9, 18, 0.56),
    inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
}

h2 {
  margin: 0 0 0.6rem;
}

#copy-btn {
  border: 1px solid var(--brand-strong);
  background: var(--brand);
  color: #fff;
  padding: 0.45rem 0.8rem;
  border-radius: 9px;
  cursor: pointer;
}

#copy-btn:hover {
  background: var(--brand-strong);
}

body[data-theme="theme-5"] #copy-btn {
  color: #0e1a2d;
  font-weight: 700;
}

.grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.8rem;
}

.card {
  border: 1px solid color-mix(in srgb, var(--line) 90%, #ffffff);
  border-radius: 10px;
  padding: 0.75rem;
  background: color-mix(in srgb, var(--panel) 95%, #ffffff);
  width: 100%;
  transition: transform 150ms ease, border-color 150ms ease;
}

.card:hover {
  transform: translateY(-1px);
}

body[data-theme="theme-5"] .card {
  border-color: #334665;
  background: linear-gradient(180deg, #1b2638, #182335);
}

.card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
}

.card h3 {
  margin: 0 0 0.35rem;
}

.card a {
  color: var(--brand-strong);
  font-weight: 600;
}

.card-placeholder {
  margin-top: 0.55rem;
  min-height: 92px;
  border: 1px dashed color-mix(in srgb, var(--line) 75%, var(--brand) 25%);
  border-radius: 8px;
  background: var(--surface-alt);
  color: var(--ink-soft);
  display: grid;
  place-items: center;
  font-weight: 700;
  text-decoration: none;
  transition: background-color 140ms ease, border-color 140ms ease, color 140ms ease;
}

.card-placeholder:hover {
  background: color-mix(in srgb, var(--surface-alt) 78%, var(--brand) 22%);
  border-color: var(--brand);
  color: var(--ink);
}

body[data-theme="theme-5"] .card-placeholder {
  border-style: solid;
}

.card-description {
  margin: 0.65rem 0 0;
  border: 1px solid color-mix(in srgb, var(--line) 85%, #ffffff);
  border-radius: 8px;
  padding: 0.65rem 0.7rem;
  color: var(--desc-ink);
  background: var(--desc-bg);
  line-height: 1.45;
}

body[data-theme="theme-5"] .card-description {
  border-color: #2f4463;
}

.status {
  margin: 0.75rem 0 0;
  font-weight: 700;
  color: var(--ink-soft);
}

.status.is-error {
  color: #8c1f1f;
}

.site-footer {
  margin-top: 1rem;
  border-top: 1px solid color-mix(in srgb, var(--line) 85%, #ffffff);
  background: color-mix(in srgb, var(--panel) 92%, var(--bg) 8%);
}

.footer-inner {
  width: min(980px, 92vw);
  margin: 0 auto;
  padding: 0.85rem 0 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
}

.footer-inner a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.9rem;
}

.footer-inner a:hover {
  color: var(--brand);
}

@media (max-width: 780px) {
  .panel-head {
    flex-direction: column;
    align-items: flex-start;
  }

  .card-top {
    flex-direction: column;
    align-items: flex-start;
  }
}