/* AnimeciX landing — Adwaita / libadwaita design language.
   Mirrors the look of GNOME 45+ apps: same palette, same typography,
   same component shapes. No framework, no slop. */

:root {
  /* Adwaita light palette (libadwaita defaults.adw) */
  --window-bg: #fafafb;
  --window-fg: #1e1e1e;
  --view-bg: #ffffff;
  --view-fg: #1e1e1e;
  --sidebar-bg: #f6f5f4;
  --sidebar-fg: #1e1e1e;
  --sidebar-shade: rgba(0, 0, 0, 0.025);
  --sidebar-border-color: rgba(0, 0, 0, 0.072);
  --headerbar-bg: #ffffff;
  --headerbar-fg: #1e1e1e;
  --headerbar-border-color: rgba(0, 0, 0, 0.072);
  --headerbar-shade: rgba(0, 0, 0, 0.025);
  --card-bg: #ffffff;
  --card-fg: #1e1e1e;
  --card-shade: rgba(0, 0, 0, 0.025);
  --popover-bg: #ffffff;
  --popover-fg: #1e1e1e;
  --popover-shade: rgba(0, 0, 0, 0.04);

  --accent-color: #3584e4;
  --accent-bg: #3584e4;
  --accent-fg: #ffffff;
  --accent-color-soft: alpha(#3584e4, 0.18);
  --accent-bg-soft: alpha(#3584e4, 0.18);
  --accent-fg-soft: #1a3f7a;

  --destructive-color: #c01c28;
  --destructive-bg: #c01c28;
  --destructive-fg: #ffffff;
  --warning-color: #e5a50a;
  --success-color: #26a269;
  --error-color: #c01c28;

  --border-color: rgba(0, 0, 0, 0.125);
  --dim-label: rgba(30, 30, 30, 0.55);
  --shade-color: rgba(0, 0, 0, 0.04);

  --radius-sm: 6px;
  --radius-md: 9px;
  --radius-lg: 12px;
  --radius-xl: 18px;

  --shadow-1: 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-2: 0 2px 4px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-3: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-4: 0 8px 24px rgba(0, 0, 0, 0.12);

  --font-family: "Cantarell", system-ui, -apple-system, "Segoe UI Variable",
                 "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  --font-mono: "Cantarell Mono", "JetBrains Mono", "SF Mono", "Cascadia Mono",
               ui-monospace, Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --window-bg: #1e1e1e;
    --window-fg: #ffffff;
    --view-bg: #1e1e1e;
    --view-fg: #ffffff;
    --sidebar-bg: #2e2e2e;
    --sidebar-fg: #ffffff;
    --sidebar-shade: rgba(0, 0, 0, 0.25);
    --sidebar-border-color: rgba(0, 0, 0, 0.36);
    --headerbar-bg: #2e2e2e;
    --headerbar-fg: #ffffff;
    --headerbar-border-color: rgba(0, 0, 0, 0.36);
    --headerbar-shade: rgba(0, 0, 0, 0.25);
    --card-bg: #2e2e2e;
    --card-fg: #ffffff;
    --card-shade: rgba(0, 0, 0, 0.16);
    --popover-bg: #2e2e2e;
    --popover-fg: #ffffff;
    --popover-shade: rgba(0, 0, 0, 0.25);
    --accent-color: #62a0ea;
    --accent-bg: #62a0ea;
    --accent-fg: #1e1e1e;
    --accent-fg-soft: #d4e3ff;
    --destructive-color: #ff7b6b;
    --destructive-bg: #c01c28;
    --destructive-fg: #ffffff;
    --warning-color: #e5a50a;
    --success-color: #26a269;
    --error-color: #ff7b6b;
    --border-color: rgba(0, 0, 0, 0.5);
    --dim-label: rgba(255, 255, 255, 0.55);
    --shade-color: rgba(0, 0, 0, 0.16);
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--window-bg);
  color: var(--window-fg);
  font-family: var(--font-family);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: var(--accent-color); text-decoration: none; }
a:hover { text-decoration: underline; }

.show-on-focus {
  position: absolute;
  top: -100px;
  left: 8px;
  background: var(--accent-bg);
  color: var(--accent-fg);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  z-index: 1000;
  transition: top 0.15s;
}
.show-on-focus:focus { top: 8px; }

/* === Headerbar (Adwaita-style) === */
.headerbar {
  background: var(--headerbar-bg);
  color: var(--headerbar-fg);
  border-bottom: 1px solid var(--headerbar-border-color);
  min-height: 48px;
  display: flex;
  align-items: center;
  padding: 0 12px;
  box-shadow: var(--shadow-1);
  position: sticky;
  top: 0;
  z-index: 10;
}
.headerbar-inner {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 12px;
}
.headerbar .brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 15px;
  color: var(--headerbar-fg);
}
.headerbar .brand img {
  width: 28px; height: 28px;
  border-radius: var(--radius-sm);
}
.headerbar nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 4px;
}
.headerbar nav a {
  color: var(--headerbar-fg);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
}
.headerbar nav a:hover {
  background: var(--headerbar-shade);
  text-decoration: none;
}
.headerbar nav a.active {
  background: var(--accent-bg-soft);
  color: var(--accent-fg-soft);
}

@media (max-width: 720px) {
  .headerbar nav a.nav-link { display: none; }
  .headerbar nav { gap: 0; }
}

/* === Buttons (Adwaita pill/button) === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 16px;
  min-height: 32px;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 14px;
  font-weight: 500;
  line-height: 1;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.1s, box-shadow 0.1s;
}
.btn:hover { text-decoration: none; }

.btn.suggested-action {
  background: var(--accent-bg);
  color: var(--accent-fg);
  border-color: var(--accent-bg);
  box-shadow: var(--shadow-1);
  font-weight: 600;
}
.btn.suggested-action:hover {
  background: color-mix(in srgb, var(--accent-bg) 90%, black);
  box-shadow: var(--shadow-2);
}
.btn.suggested-action.large {
  min-height: 40px;
  padding: 10px 22px;
  font-size: 15px;
  border-radius: var(--radius-lg);
}

.btn.flat {
  background: transparent;
  color: var(--window-fg);
  border-color: transparent;
}
.btn.flat:hover {
  background: var(--shade-color);
}

.btn.outlined {
  background: transparent;
  color: var(--window-fg);
  border-color: var(--border-color);
}
.btn.outlined:hover {
  background: var(--shade-color);
}

.btn.destructive-action {
  background: var(--destructive-bg);
  color: var(--destructive-fg);
  border-color: var(--destructive-bg);
}

/* === Layout === */
.window {
  max-width: 1080px;
  margin: 0 auto;
  background: var(--window-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.content {
  flex: 1;
  padding: 16px 20px 24px;
}
.content-narrow {
  max-width: 640px;
  margin: 0 auto;
}

/* === Typography (Adwaita scale) === */
.title-1 {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin: 0 0 4px;
}
.title-2 {
  font-size: 18px;
  font-weight: 700;
  margin: 32px 0 8px;
}
.title-3 {
  font-size: 15px;
  font-weight: 700;
  margin: 16px 0 6px;
}
.body {
  font-size: 15px;
  line-height: 1.5;
  color: var(--window-fg);
}
.dim-label { color: var(--dim-label); }
.caption { font-size: 13px; color: var(--dim-label); }
.mono { font-family: var(--font-mono); font-size: 13px; }

h1 { font-size: 32px; font-weight: 800; letter-spacing: -0.02em; margin: 0 0 12px; line-height: 1.15; }
h2 { font-size: 22px; font-weight: 700; letter-spacing: -0.01em; margin: 0 0 8px; }
h3 { font-size: 17px; font-weight: 700; margin: 0 0 6px; }
p { margin: 0 0 12px; }

/* === Hero === */
.hero {
  text-align: center;
  padding: 36px 16px 28px;
}
.hero h1 {
  font-size: 40px;
  letter-spacing: -0.025em;
  margin-bottom: 8px;
}
.hero .subtitle {
  font-size: 15px;
  color: var(--dim-label);
  max-width: 520px;
  margin: 0 auto 18px;
  line-height: 1.45;
}
.hero .actions {
  display: flex;
  gap: 8px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 10px;
}
.hero .meta {
  font-size: 12px;
  color: var(--dim-label);
}

/* === Card (libadwaita) === */
.card {
  background: var(--card-bg);
  color: var(--card-fg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-1);
}
.card.elevated { box-shadow: var(--shadow-2); }
.card + .card { margin-top: 16px; }

.card-title { font-size: 17px; font-weight: 700; margin: 0 0 8px; }
.card-text { color: var(--window-fg); margin: 0 0 12px; line-height: 1.5; }

/* === Feature row (alternating, libadwaita .card layout) === */
.feature {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  align-items: center;
  margin: 20px 0;
}
.feature.reverse { direction: rtl; }
.feature.reverse > * { direction: ltr; }
.feature .visual {
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-2);
  display: block;
  overflow: hidden;
  background: var(--card-bg);
}
.feature .visual img {
  width: 100%;
  height: auto;
  display: block;
}
.feature .text h2 { font-size: 20px; margin: 0 0 6px; }
.feature .text p { color: var(--dim-label); margin: 0 0 8px; font-size: 14px; line-height: 1.5; }

@media (min-width: 720px) {
  .feature { grid-template-columns: 1fr 1fr; gap: 28px; margin: 28px 0; }
}

/* === Section header === */
.section-title {
  text-align: center;
  font-size: 20px;
  font-weight: 800;
  margin: 24px 0 14px;
  letter-spacing: -0.01em;
}
.section-eyebrow {
  display: block;
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 10px;
  font-weight: 700;
  color: var(--accent-color);
  margin: 16px 0 4px;
}

/* === Code block (libadwaita .frame) === */
.frame {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.frame pre {
  margin: 0;
  padding: 14px 16px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.5;
  color: var(--window-fg);
}
.frame pre code { font-family: inherit; }

/* === Inline code (libadwaita) === */
code:not(pre code) {
  font-family: var(--font-mono);
  font-size: 0.92em;
  padding: 1px 5px;
  background: var(--shade-color);
  border-radius: var(--radius-sm);
  color: var(--window-fg);
}
kbd {
  display: inline-block;
  padding: 2px 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-bottom-width: 2px;
  border-radius: var(--radius-sm);
  color: var(--window-fg);
  vertical-align: 1px;
}

/* === List (libadwaita .boxed-list) === */
.boxed-list {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.boxed-list > * {
  padding: 14px 18px;
  border-top: 1px solid var(--border-color);
}
.boxed-list > *:first-child { border-top: none; }
.boxed-list h3 { margin: 0 0 4px; font-size: 15px; }
.boxed-list p { margin: 0; color: var(--dim-label); }

/* === Details (libadwaita .expander) === */
details.expander {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: 8px;
  overflow: hidden;
}
details.expander > summary {
  list-style: none;
  cursor: pointer;
  padding: 14px 18px;
  font-weight: 600;
  user-select: none;
  display: flex;
  align-items: center;
  gap: 10px;
}
details.expander > summary::-webkit-details-marker { display: none; }
details.expander > summary::before {
  content: "›";
  font-size: 18px;
  width: 16px;
  text-align: center;
  transition: transform 0.15s;
  color: var(--dim-label);
  font-weight: 400;
}
details.expander[open] > summary::before { transform: rotate(90deg); }
details.expander > summary:hover { background: var(--shade-color); }
details.expander > .body {
  padding: 0 18px 16px 44px;
  color: var(--window-fg);
  border-top: 1px solid var(--border-color);
  padding-top: 14px;
  padding-left: 44px;
  padding-right: 18px;
  padding-bottom: 16px;
}

/* === Footer === */
.footer {
  border-top: 1px solid var(--border-color);
  padding: 24px;
  color: var(--dim-label);
  font-size: 13px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}
.footer a { color: var(--dim-label); }
.footer a:hover { color: var(--window-fg); }
.footer ul {
  list-style: none;
  margin: 0; padding: 0;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* === Misc === */
.divider {
  height: 1px;
  background: var(--border-color);
  margin: 20px 0;
  border: none;
}
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--accent-bg-soft);
  color: var(--accent-fg-soft);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

ul, ol { padding-left: 20px; }
li { margin-bottom: 4px; }