:root {
  color-scheme: dark;
  --bg: #11161c;
  --bg-top: #171f27;
  --panel: rgba(24, 32, 41, 0.92);
  --panel-strong: rgba(20, 27, 35, 0.98);
  --line: #2f3b48;
  --text: #edf3f8;
  --muted: #9caab7;
  --accent: #7dd3fc;
  --accent-soft: rgba(38, 64, 82, 0.9);
  --ok: #79d2a6;
  --warn: #f2c572;
  --shadow: 0 22px 54px rgba(0, 0, 0, 0.34);
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f5efe6;
  --bg-top: #f9f4ec;
  --panel: rgba(255, 251, 245, 0.92);
  --panel-strong: rgba(255, 251, 245, 0.98);
  --line: #d8cab9;
  --text: #1f1a14;
  --muted: #6d6152;
  --accent: #935625;
  --accent-soft: #f2dfcb;
  --ok: #24693d;
  --warn: #9a6300;
  --shadow: 0 18px 44px rgba(82, 54, 22, 0.14);
}

:root[data-theme="eink"] {
  color-scheme: light;
  --bg: #ffffff;
  --bg-top: #ffffff;
  --panel: rgba(255, 255, 255, 0.98);
  --panel-strong: rgba(255, 255, 255, 1);
  --line: #6f6f6f;
  --text: #161616;
  --muted: #5a5a5a;
  --accent: #222222;
  --accent-soft: #efefef;
  --ok: #1c1c1c;
  --warn: #454545;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.04);
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme]) {
    color-scheme: light;
    --bg: #f5efe6;
    --bg-top: #f9f4ec;
    --panel: rgba(255, 251, 245, 0.92);
    --panel-strong: rgba(255, 251, 245, 0.98);
    --line: #d8cab9;
    --text: #1f1a14;
    --muted: #6d6152;
    --accent: #935625;
    --accent-soft: #f2dfcb;
    --ok: #24693d;
    --warn: #9a6300;
    --shadow: 0 18px 44px rgba(82, 54, 22, 0.14);
  }
}

html {
  background: var(--bg);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
  color: var(--text);
  background-color: var(--bg);
  background-image:
    radial-gradient(
      circle at top left,
      rgba(125, 211, 252, 0.14),
      transparent 24rem
    ),
    linear-gradient(180deg, var(--bg-top), var(--bg));
  background-repeat: no-repeat, no-repeat;
  background-size:
    auto,
    100% 100%;
}

:root[data-theme="eink"] body {
  background: #ffffff;
}

main {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0.85rem;
}

.hero {
  padding: 1rem 1.05rem;
  margin-bottom: 0.8rem;
  background: var(--panel-strong);
  border: 1px solid var(--line);
  border-radius: 20px;
  box-shadow: var(--shadow);
}

.eyebrow {
  margin: 0 0 0.35rem;
  font-size: 0.76rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
}

h1 {
  margin: 0;
  font-size: clamp(1.7rem, 4vw, 3rem);
  line-height: 0.98;
  letter-spacing: -0.04em;
}

.hero p {
  max-width: 60rem;
  margin: 0.65rem 0 0;
  color: var(--muted);
  line-height: 1.42;
  font-size: 0.95rem;
}

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 0.75rem;
}

.pill {
  padding: 0.32rem 0.62rem;
  border-radius: 999px;
  background: var(--accent-soft);
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.8rem;
}

.button {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.32rem 0.62rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--panel-strong);
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.8rem;
}

.theme-switcher {
  display: inline-flex;
  align-items: center;
  gap: 0.2rem;
  padding: 0.18rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--panel);
}

.theme-option {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 0.8rem;
  font-weight: 600;
  line-height: 1;
  padding: 0.42rem 0.68rem;
  border-radius: 999px;
  cursor: pointer;
}

.theme-option.is-active {
  background: var(--accent-soft);
  color: var(--text);
}

code {
  font-family: "DejaVu Sans Mono", monospace;
  font-size: 0.95em;
}

.footer {
  margin: 0.8rem 0 0.25rem;
  color: var(--muted);
  font-size: 0.8rem;
}

:root[data-theme="light"] .button {
  background: var(--panel-strong);
  border-color: var(--line);
  color: var(--accent);
}

:root[data-theme="dark"] .button {
  background: rgba(18, 24, 31, 0.98);
  border-color: #3a4755;
  color: #d8f4ff;
}

:root[data-theme="eink"] .button {
  background: var(--panel-strong);
  border-color: var(--line);
  color: var(--text);
}

:root[data-theme="light"] .pill {
  background: var(--accent-soft);
  border-color: var(--line);
  color: var(--muted);
}

:root[data-theme="dark"] .pill {
  background: rgba(28, 43, 55, 0.95);
  border-color: #3a4755;
  color: var(--muted);
}

:root[data-theme="eink"] .pill {
  background: var(--accent-soft);
  border-color: var(--line);
  color: var(--muted);
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme]) .button {
    background: var(--panel-strong);
    border-color: var(--line);
    color: var(--accent);
  }

  :root:not([data-theme]) .pill {
    background: var(--accent-soft);
    border-color: var(--line);
    color: var(--muted);
  }
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) .button {
    background: rgba(18, 24, 31, 0.98);
    border-color: #3a4755;
    color: #d8f4ff;
  }

  :root:not([data-theme]) .pill {
    background: rgba(28, 43, 55, 0.95);
    border-color: #3a4755;
    color: var(--muted);
  }
}

.button:hover {
  background: var(--accent-soft);
}

/* ── Card components ──────────────────────────────────────────────────────── */

.card-head {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
}

.card p {
  margin: 0.52rem 0 0;
  color: var(--muted);
  line-height: 1.35;
  font-size: 0.88rem;
}

/* ── Key-value layout ─────────────────────────────────────────────────────── */

.kv {
  margin-top: 0.85rem;
  display: grid;
  gap: 0.45rem;
}

.row {
  display: grid;
  grid-template-columns: 6.4rem 1fr;
  gap: 0.55rem;
  align-items: start;
}

.k {
  color: var(--muted);
  font-size: 0.83rem;
}

.v,
.v a,
.v code {
  font-size: 0.9rem;
  line-height: 1.45;
}

.v a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.16em;
}

/* ── Detail grid (badges/buttons row) ─────────────────────────────────────── */

.detail-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 0.65rem;
}

/* ── Copy button ──────────────────────────────────────────────────────────── */

.copy-button {
  display: inline-flex;
  align-items: center;
  gap: 0.32rem;
  padding: 0.38rem 0.64rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--panel-strong);
  color: var(--accent);
  font: inherit;
  cursor: pointer;
  font-size: 0.8rem;
  line-height: 1;
  white-space: nowrap;
}

.copy-button:hover {
  background: var(--accent-soft);
}

.copy-button.copied {
  color: var(--ok);
}

:root[data-theme="dark"] .copy-button {
  background: rgba(18, 24, 31, 0.98);
  border-color: #3a4755;
  color: #d8f4ff;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) .copy-button {
    background: rgba(18, 24, 31, 0.98);
    border-color: #3a4755;
    color: #d8f4ff;
  }
}

/* ── Tooltip hint (i) button ──────────────────────────────────────────────── */

.service-hint {
  flex: 0 0 auto;
  width: 1.2rem;
  height: 1.2rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--panel-strong);
  color: var(--muted);
  font-size: 0.75rem;
  line-height: 1;
  font-weight: 700;
  cursor: help;
}

.service-hint::after {
  content: attr(data-tooltip);
  position: absolute;
  left: 0;
  right: 0;
  width: auto;
  top: calc(100% + 0.45rem);
  padding: 0.5rem 0.62rem;
  border-radius: 0.5rem;
  border: 1px solid var(--line);
  background: var(--panel-strong);
  color: var(--text);
  font-size: 0.8rem;
  font-weight: 500;
  line-height: 1.3;
  white-space: normal;
  text-align: left;
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transform: translateY(-3px);
  transition: opacity 120ms ease, transform 120ms ease;
  z-index: 30;
}

.service-hint:hover::after,
.service-hint:focus-visible::after {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 720px) {
  main {
    padding: 0.7rem;
  }

  .hero {
    border-radius: 16px;
    padding: 0.75rem;
  }
}

.sections {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  grid-auto-flow: dense;
  gap: 0.8rem;
  margin-top: 0.8rem;
}

.section {
  min-width: 0;
}

.section-plain {
  padding: 0;
  background: transparent;
  border: none;
  box-shadow: none;
}

.section-panel {
  padding: 1rem 1.05rem;
  background: var(--panel-strong);
  border: 1px solid var(--line);
  border-radius: 20px;
  box-shadow: var(--shadow);
}

.section-static {
  grid-column: 1 / -1;
}

.section.span-1 {
  grid-column: span 1;
}

.section.span-2 {
  grid-column: span 2;
}

.section.span-3 {
  grid-column: span 4;
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.7rem;
  flex-wrap: wrap;
  margin-bottom: 0.65rem;
}

h2 {
  margin: 0;
  font-size: 1.02rem;
}

.section-plain .section-head {
  position: relative;
  display: block;
  margin-bottom: 0.9rem;
  padding: 0.16rem 0 0.58rem 0.95rem;
  border-bottom: 1px solid rgba(147, 86, 37, 0.18);
}

.section-plain .section-head h2 {
  font-size: 1.18rem;
  line-height: 1.02;
  letter-spacing: -0.03em;
}

.section-plain .section-head::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.1rem;
  bottom: 0.58rem;
  width: 4px;
  border-radius: 999px;
  background: linear-gradient(180deg, var(--accent), rgba(147, 86, 37, 0.2));
}

.grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.7rem;
}

.grid.grid-tight-cards {
  grid-template-columns: repeat(auto-fit, minmax(240px, 280px));
}

.section.span-1 .grid {
  grid-template-columns: 1fr;
}

.section.span-2 .grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.section.span-3 .grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 0.8rem;
  display: flex;
  flex-direction: column;
}

.card h3 {
  margin: 0;
  font-size: 0.96rem;
  line-height: 1.18;
}

@media (max-width: 1180px) {
  .sections {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .section.span-3 {
    grid-column: span 3;
  }

  .section.span-3 .grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 960px) {
  .sections {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .section.span-2,
  .section.span-3 {
    grid-column: span 2;
  }

  .section.span-2 .grid,
  .section.span-3 .grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .sections {
    grid-template-columns: 1fr;
  }

  .section-plain .section-head {
    padding: 0.12rem 0 0.52rem 0.82rem;
    margin-bottom: 0.82rem;
  }

  .section.span-1,
  .section.span-2,
  .section.span-3 {
    grid-column: span 1;
  }

  .row {
    grid-template-columns: 1fr;
    gap: 0.18rem;
  }

  .grid,
  .grid.grid-tight-cards,
  .section.span-2 .grid,
  .section.span-3 .grid {
    grid-template-columns: 1fr;
  }
}