/* Pano website. Light and dark colors follow the system setting. */

:root {
  color-scheme: light dark;

  --bg: #fafafb;
  --bg-raised: #ffffff;
  --bg-sunken: #f0f0f3;
  --fg: #1f1f24;
  --fg-muted: #5c5c66;
  --border: rgb(0 0 0 / 0.1);
  --accent: #2a7d4f;
  --accent-fg: #ffffff;
  --accent-soft: rgb(42 125 79 / 0.1);
  --code-bg: #f0f0f3;
  --shadow: 0 1px 2px rgb(0 0 0 / 0.06), 0 8px 24px rgb(0 0 0 / 0.08);

  --radius: 12px;
  --font: "Adwaita Sans", "Cantarell", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "Adwaita Mono", "Source Code Pro", ui-monospace, "SFMono-Regular", Menlo, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1d1d21;
    --bg-raised: #26262b;
    --bg-sunken: #17171a;
    --fg: #ececf0;
    --fg-muted: #a3a3ad;
    --border: rgb(255 255 255 / 0.1);
    --accent: #5cc98a;
    --accent-fg: #0f2a1a;
    --accent-soft: rgb(92 201 138 / 0.12);
    --code-bg: #141417;
    --shadow: 0 1px 2px rgb(0 0 0 / 0.3), 0 8px 24px rgb(0 0 0 / 0.35);
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

code,
pre {
  font-family: var(--mono);
  font-size: 0.88em;
}

:not(pre) > code {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.1em 0.4em;
}

.container {
  width: min(1080px, 100% - 40px);
  margin-inline: auto;
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--fg);
  font-weight: 700;
  font-size: 1.15rem;
  text-decoration: none;
}

.brand img {
  width: 28px;
  height: 28px;
}

.site-nav {
  display: flex;
  gap: 24px;
}

.site-nav a {
  color: var(--fg-muted);
  text-decoration: none;
  font-size: 0.95rem;
}

.site-nav a:hover {
  color: var(--fg);
}

/* Hero */

.hero {
  padding: 80px 0 48px;
  text-align: center;
}

.badge {
  display: inline-block;
  margin-bottom: 20px;
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 600;
}

.hero h1 {
  margin: 0 auto 16px;
  max-width: 760px;
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

.hero p {
  margin: 0 auto 32px;
  max-width: 620px;
  color: var(--fg-muted);
  font-size: 1.15rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.button {
  display: inline-block;
  padding: 11px 22px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-raised);
  color: var(--fg);
  font-weight: 600;
  text-decoration: none;
}

.button.primary {
  background: var(--accent);
  border-color: transparent;
  color: var(--accent-fg);
}

.button:hover {
  filter: brightness(1.06);
}

/* Sections */

section {
  padding: 56px 0;
}

section h2 {
  margin: 0 0 8px;
  font-size: 1.9rem;
  letter-spacing: -0.01em;
}

.lead {
  margin: 0 0 32px;
  color: var(--fg-muted);
  max-width: 680px;
}

/* Tab position showcase */

.showcase {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
}

.segmented {
  display: inline-flex;
  margin-bottom: 20px;
  padding: 4px;
  gap: 4px;
  border-radius: 10px;
  background: var(--bg-sunken);
}

.segmented button {
  font: inherit;
  font-size: 0.95rem;
  padding: 6px 16px;
  border: 0;
  border-radius: 7px;
  background: transparent;
  color: var(--fg-muted);
  cursor: pointer;
}

.segmented button[aria-pressed="true"] {
  background: var(--bg-raised);
  color: var(--fg);
  box-shadow: 0 1px 3px rgb(0 0 0 / 0.15);
}

.screenshot {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 300px;
}

.screenshot img {
  border-radius: 10px;
}

.showcase figcaption {
  margin-top: 14px;
  color: var(--fg-muted);
  font-size: 0.92rem;
  text-align: center;
}

/* Feature grid */

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}

.card {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
}

.card h3 {
  margin: 0 0 6px;
  font-size: 1.05rem;
}

.card p {
  margin: 0;
  color: var(--fg-muted);
  font-size: 0.95rem;
}

.tag {
  display: inline-block;
  margin-bottom: 10px;
  padding: 2px 9px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--bg-sunken);
  color: var(--fg-muted);
}

.tag.done {
  background: var(--accent-soft);
  color: var(--accent);
}

/* Install */

pre {
  margin: 0 0 20px;
  padding: 16px 18px;
  overflow-x: auto;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  line-height: 1.5;
}

.steps h3 {
  margin: 28px 0 10px;
  font-size: 1.05rem;
}

.note {
  padding: 14px 18px;
  border-left: 3px solid var(--accent);
  background: var(--accent-soft);
  border-radius: 0 10px 10px 0;
  color: var(--fg);
  font-size: 0.95rem;
}

/* Footer */

.site-footer {
  margin-top: 40px;
  padding: 32px 0 48px;
  border-top: 1px solid var(--border);
  color: var(--fg-muted);
  font-size: 0.9rem;
}

.site-footer p {
  margin: 4px 0;
}

@media (max-width: 640px) {
  .site-nav {
    gap: 14px;
  }

  .site-nav .optional {
    display: none;
  }

  .hero {
    padding-top: 56px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}