/* ============================================================
   tunlx documentation – visual system
   ============================================================ */

:root {
  --md-primary-fg-color:        #0f172a;
  --md-primary-fg-color--light:  #1e293b;
  --md-primary-fg-color--dark:   #020617;
  --md-accent-fg-color:          #06b6d4;
  --md-accent-fg-color--transparent: rgba(6, 182, 212, 0.12);
  --md-typeset-a-color:          #0891b2;

  --tunlx-brand-1: #06b6d4;
  --tunlx-brand-2: #6366f1;
  --tunlx-brand-3: #a855f7;
  --tunlx-brand-warm: #f59e0b;
  --tunlx-brand-glow: rgba(99, 102, 241, 0.35);
  --tunlx-border: rgba(15, 23, 42, 0.1);
  --tunlx-card-bg: #ffffff;
  --tunlx-card-shadow: 0 1px 2px rgba(15, 23, 42, 0.04),
                       0 8px 24px rgba(15, 23, 42, 0.06);
  --tunlx-card-shadow-hover: 0 6px 16px rgba(15, 23, 42, 0.08),
                             0 20px 40px rgba(15, 23, 42, 0.12);
}

[data-md-color-scheme="slate"] {
  --md-primary-fg-color:         #0b1220;
  --md-primary-fg-color--light:  #111c30;
  --md-primary-fg-color--dark:   #050a14;
  --md-accent-fg-color:          #22d3ee;
  --md-accent-fg-color--transparent: rgba(34, 211, 238, 0.18);
  --md-typeset-a-color:          #67e8f9;
  --md-default-bg-color:         #0b1220;
  --tunlx-border: rgba(148, 163, 184, 0.18);
  --tunlx-card-bg: rgba(255, 255, 255, 0.025);
  --tunlx-card-shadow: 0 1px 2px rgba(0, 0, 0, 0.4),
                       0 8px 24px rgba(0, 0, 0, 0.35);
  --tunlx-card-shadow-hover: 0 6px 16px rgba(0, 0, 0, 0.5),
                             0 24px 48px rgba(99, 102, 241, 0.22);
}

/* Typography ------------------------------------------------------------- */

.md-typeset h1 {
  font-weight: 800;
  letter-spacing: -0.02em;
  font-size: 2.4rem;
  line-height: 1.15;
  background: linear-gradient(120deg,
              var(--tunlx-brand-1) 0%,
              var(--tunlx-brand-2) 55%,
              var(--tunlx-brand-3) 100%);
  -webkit-background-clip: text;
          background-clip: text;
  color: transparent;
  margin-bottom: 1rem;
}

[data-md-color-scheme="slate"] .md-typeset h1 {
  background: linear-gradient(120deg, #22d3ee 0%, #818cf8 55%, #c084fc 100%);
  -webkit-background-clip: text;
          background-clip: text;
  color: transparent;
}

.md-typeset h2 {
  font-weight: 700;
  letter-spacing: -0.01em;
  border-bottom: 1px solid var(--tunlx-border);
  padding-bottom: 0.4em;
  margin-top: 2.4em;
}

.md-typeset h3 {
  font-weight: 650;
  letter-spacing: -0.005em;
  margin-top: 1.8em;
}

.md-typeset p,
.md-typeset li {
  line-height: 1.65;
}

/* Layout ----------------------------------------------------------------- */

.md-grid { max-width: 68rem; }

.md-header {
  background: linear-gradient(120deg,
              var(--md-primary-fg-color--dark) 0%,
              var(--md-primary-fg-color) 50%,
              var(--md-primary-fg-color--light) 100%);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.04),
              0 6px 24px rgba(2, 6, 23, 0.25);
}

.md-tabs {
  background: linear-gradient(120deg,
              var(--md-primary-fg-color) 0%,
              var(--md-primary-fg-color--light) 100%);
}

.md-tabs__link {
  opacity: 0.85;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: opacity 160ms ease, color 160ms ease;
}

.md-tabs__link:hover,
.md-tabs__link--active {
  opacity: 1;
  color: var(--md-accent-fg-color);
}

/* Tables ----------------------------------------------------------------- */

.md-typeset table:not([class]) {
  border: 1px solid var(--tunlx-border);
  border-radius: 0.7rem;
  overflow: hidden;
  box-shadow: var(--tunlx-card-shadow);
}

.md-typeset table:not([class]) th {
  background: color-mix(in srgb, var(--tunlx-brand-2) 10%, transparent);
  font-weight: 700;
}

.md-typeset table:not([class]) tr:hover td {
  background: color-mix(in srgb, var(--tunlx-brand-1) 5%, transparent);
}

/* Images ----------------------------------------------------------------- */

.md-typeset img {
  border-radius: 0.7rem;
  border: 1px solid var(--tunlx-border);
  box-shadow: var(--tunlx-card-shadow);
  transition: transform 220ms ease, box-shadow 220ms ease;
}

.md-typeset a:hover img {
  transform: translateY(-2px);
  box-shadow: var(--tunlx-card-shadow-hover);
}

/* Hero screenshot: centred preview, not a full-bleed banner */
.tunlx-screenshot-wrap {
  display: flex;
  justify-content: center;
  margin: 1.6rem 0 2.4rem;
  padding: 1.6rem 2rem;
  background: color-mix(in srgb, var(--tunlx-brand-2) 5%, transparent);
  border: 1px solid var(--tunlx-border);
  border-radius: 1rem;
}

.tunlx-screenshot-wrap img {
  max-width: min(100%, 38rem);
  width: 100%;
  opacity: 0.92;
  transition: opacity 220ms ease, transform 220ms ease, box-shadow 220ms ease;
}

.tunlx-screenshot-wrap img:hover {
  opacity: 1;
  transform: translateY(-2px) scale(1.01);
}

/* Code ------------------------------------------------------------------- */

.md-typeset code {
  border-radius: 0.4rem;
  padding: 0.12em 0.4em;
  font-size: 0.85em;
}

.md-typeset pre > code {
  border-radius: 0.6rem;
  padding: 1rem 1.1rem;
  box-shadow: var(--tunlx-card-shadow);
}

/* Admonitions ------------------------------------------------------------ */

.md-typeset .admonition,
.md-typeset details {
  border-radius: 0.6rem;
  border-left-width: 0.25rem;
  box-shadow: var(--tunlx-card-shadow);
}

/* ============================================================
   Hero (used on index.md)
   ============================================================ */

.tunlx-hero {
  position: relative;
  margin: 0.5rem 0 2.4rem;
  padding: 3.6rem 2.8rem 3rem;
  border-radius: 1rem;
  overflow: hidden;
  background:
    radial-gradient(circle at 12% 12%, rgba(34, 211, 238, 0.28), transparent 38%),
    radial-gradient(circle at 88% 14%, rgba(168, 85, 247, 0.26), transparent 40%),
    radial-gradient(circle at 60% 92%, rgba(99, 102, 241, 0.32), transparent 45%),
    linear-gradient(140deg, #020617 0%, #0f172a 55%, #1e1b4b 100%);
  color: #f8fafc;
  isolation: isolate;
}

.tunlx-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(rgba(255,255,255,0.08) 1px, transparent 1px),
    radial-gradient(rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size: 32px 32px, 64px 64px;
  background-position: 0 0, 16px 16px;
  opacity: 0.6;
  z-index: -1;
  pointer-events: none;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,0.9), transparent 90%);
}

.tunlx-hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.16);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #cffafe;
  backdrop-filter: blur(8px);
  margin-bottom: 1.25rem;
}

.tunlx-hero__eyebrow::before {
  content: "";
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 999px;
  background: #22d3ee;
  box-shadow: 0 0 0 4px rgba(34, 211, 238, 0.25);
  animation: tunlx-pulse 2.2s ease-in-out infinite;
}

@keyframes tunlx-pulse {
  0%, 100% { box-shadow: 0 0 0 4px rgba(34, 211, 238, 0.25); }
  50%      { box-shadow: 0 0 0 9px rgba(34, 211, 238, 0); }
}

.tunlx-hero h1.tunlx-hero__title {
  font-size: 3.4rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin: 0 0 1rem;
  background: linear-gradient(120deg, #f8fafc 0%, #c4b5fd 45%, #67e8f9 100%);
  -webkit-background-clip: text;
          background-clip: text;
  color: transparent;
  border: 0;
  padding: 0;
}

.tunlx-hero__lede {
  max-width: 44rem;
  font-size: 1.1rem;
  line-height: 1.6;
  color: rgba(248, 250, 252, 0.85);
  margin: 0 0 1.8rem;
}

.tunlx-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 0 0 2rem;
}

.tunlx-hero__actions > p {
  display: contents;
  margin: 0;
}

.tunlx-hero__meta > p {
  display: contents;
  margin: 0;
}

.tunlx-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.2rem;
  border-radius: 0.6rem;
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none !important;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.tunlx-btn--primary {
  background: linear-gradient(120deg, #06b6d4 0%, #6366f1 100%);
  color: #ffffff !important;
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.35);
}

.tunlx-btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(99, 102, 241, 0.55);
}

.tunlx-btn--ghost {
  background: rgba(255, 255, 255, 0.07);
  color: #f1f5f9 !important;
  border: 1px solid rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(6px);
}

.tunlx-btn--ghost:hover {
  background: rgba(255, 255, 255, 0.13);
  transform: translateY(-2px);
}

.tunlx-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1.6rem;
  font-size: 0.85rem;
  color: rgba(248, 250, 252, 0.75);
}

.tunlx-hero__meta strong {
  color: #f8fafc;
  font-weight: 700;
}

@media (max-width: 60em) {
  .tunlx-hero { padding: 2.6rem 1.4rem 2.4rem; }
  .tunlx-hero h1.tunlx-hero__title { font-size: 2.4rem; }
}

/* ============================================================
   Feature card grid
   ============================================================ */

.tunlx-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: 1rem;
  margin: 1.6rem 0 2.4rem;
}

/* Markdown wraps each card in <p> when md_in_html is active.
   Flatten that wrapper so the grid lays out cards, not paragraphs. */
.tunlx-grid > p {
  display: contents;
}

.tunlx-grid > p > .tunlx-card,
.tunlx-grid > .tunlx-card {
  margin: 0;
}

.tunlx-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  padding: 1.4rem 1.3rem 1.3rem;
  border-radius: 0.85rem;
  border: 1px solid var(--tunlx-border);
  background: var(--tunlx-card-bg);
  box-shadow: var(--tunlx-card-shadow);
  text-decoration: none !important;
  color: var(--md-default-fg-color) !important;
  transition: transform 200ms ease, box-shadow 200ms ease, border-color 200ms ease;
  overflow: hidden;
}

.tunlx-card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg,
              rgba(34, 211, 238, 0.5),
              rgba(99, 102, 241, 0.45),
              rgba(168, 85, 247, 0.4));
  -webkit-mask:
    linear-gradient(#000 0 0) content-box,
    linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
  opacity: 0;
  transition: opacity 200ms ease;
  pointer-events: none;
}

.tunlx-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--tunlx-card-shadow-hover);
  border-color: transparent;
}

.tunlx-card:hover::after { opacity: 1; }

.tunlx-card__icon {
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 0.6rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  background: linear-gradient(135deg,
              color-mix(in srgb, var(--tunlx-brand-1) 30%, transparent),
              color-mix(in srgb, var(--tunlx-brand-2) 30%, transparent));
  border: 1px solid var(--tunlx-border);
  color: var(--md-accent-fg-color);
  margin-bottom: 0.35rem;
}

.tunlx-card__title {
  font-weight: 700;
  font-size: 1.02rem;
  letter-spacing: -0.005em;
  color: var(--md-default-fg-color);
}

.tunlx-card__body {
  font-size: 0.88rem;
  line-height: 1.5;
  color: var(--md-default-fg-color--light);
}

.tunlx-card__cta {
  margin-top: auto;
  padding-top: 0.4rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--md-accent-fg-color);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.tunlx-card__cta::after {
  content: "→";
  transition: transform 160ms ease;
}

.tunlx-card:hover .tunlx-card__cta::after {
  transform: translateX(4px);
}

/* ============================================================
   Pill badges
   ============================================================ */

.tunlx-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  border: 1px solid var(--tunlx-border);
  background: color-mix(in srgb, var(--md-accent-fg-color) 12%, transparent);
  color: var(--md-accent-fg-color);
  vertical-align: middle;
  margin-left: 0.35rem;
}

.tunlx-pill--new {
  background: linear-gradient(120deg,
              color-mix(in srgb, var(--tunlx-brand-1) 20%, transparent),
              color-mix(in srgb, var(--tunlx-brand-3) 20%, transparent));
  border-color: transparent;
}

.tunlx-pill--warm {
  background: color-mix(in srgb, var(--tunlx-brand-warm) 18%, transparent);
  color: var(--tunlx-brand-warm);
}

/* ============================================================
   Step list (numbered)
   ============================================================ */

.tunlx-steps {
  list-style: none;
  counter-reset: tunlx-step;
  padding: 0;
  margin: 1.4rem 0;
}

.tunlx-steps > li {
  counter-increment: tunlx-step;
  position: relative;
  padding: 0.9rem 1rem 0.9rem 3.2rem;
  margin: 0 0 0.6rem;
  border: 1px solid var(--tunlx-border);
  border-radius: 0.7rem;
  background: var(--tunlx-card-bg);
  box-shadow: var(--tunlx-card-shadow);
}

.tunlx-steps > li::before {
  content: counter(tunlx-step);
  position: absolute;
  left: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  width: 1.8rem;
  height: 1.8rem;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  background: linear-gradient(135deg, var(--tunlx-brand-1), var(--tunlx-brand-2));
  color: #fff;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

/* ============================================================
   Mermaid alignment with theme
   ============================================================ */

.mermaid {
  text-align: center;
  background: transparent;
  margin: 1.4rem 0;
}

/* ============================================================
   Misc polish
   ============================================================ */

.md-footer-meta { background: var(--md-primary-fg-color--dark); }

.md-search__form {
  border-radius: 0.5rem;
}

[data-md-color-scheme="slate"] .md-typeset a code {
  color: #93c5fd;
}