/* ============================================
   Tuis - Marketing Site Styles
   ============================================ */

/* --- Reset & Base --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  /* Light mode */
  --bg: #fafafa;
  --bg-alt: #f1f1f1;
  --text: #1a1a1a;
  --text-muted: #636363;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --border: #e2e2e2;
  --code-bg: #1e1e2e;
  --code-text: #cdd6f4;
  --code-comment: #6c7086;
  --card-bg: #ffffff;
  --card-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
  --hero-bg: #f5f5f5;
  --tag-bg: #e8e8e8;
  --tag-text: #555555;
  --link: #2563eb;
}

[data-theme="dark"] {
  --bg: #111111;
  --bg-alt: #1a1a1a;
  --text: #e4e4e4;
  --text-muted: #999999;
  --accent: #60a5fa;
  --accent-hover: #93c5fd;
  --border: #2a2a2a;
  --code-bg: #0a0a0a;
  --code-text: #cdd6f4;
  --code-comment: #6c7086;
  --card-bg: #1a1a1a;
  --card-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
  --hero-bg: #141414;
  --tag-bg: #2a2a2a;
  --tag-text: #aaaaaa;
  --link: #60a5fa;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--link);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

code, pre {
  font-family: "SF Mono", "Fira Code", "JetBrains Mono", Menlo, monospace;
}

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

/* --- Layout --- */
.container {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.container--wide {
  max-width: 1080px;
}

/* --- Theme Toggle --- */
.theme-toggle {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 50%;
  width: 42px;
  height: 42px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--card-shadow);
  z-index: 100;
  transition: background 0.2s;
  font-size: 1.1rem;
}

.theme-toggle:hover {
  background: var(--bg-alt);
}

.theme-toggle .icon-sun,
.theme-toggle .icon-moon { display: none; }

[data-theme="dark"] .theme-toggle .icon-sun { display: inline; }
[data-theme="light"] .theme-toggle .icon-moon { display: inline; }
:root:not([data-theme]) .theme-toggle .icon-moon { display: inline; }

/* --- Header / Hero --- */
.hero {
  background: var(--hero-bg);
  padding: 2.5rem 0 5rem;
  text-align: center;
  border-bottom: 1px solid var(--border);
  overflow: visible;
  margin-bottom: 2rem;
}

.hero-logo {
  width: 80px;
  height: 80px;
  margin: 0 auto 0.75rem;
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 0;
}

.hero .pronunciation {
  font-size: 1rem;
  color: var(--text-muted);
  font-style: italic;
  margin-bottom: 0.5rem;
  letter-spacing: 0.02em;
}

.hero .tagline {
  font-size: 1.25rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.hero-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.hero-nav__sep {
  color: var(--text-muted);
  user-select: none;
}

.hero-nav a {
  color: var(--text-muted);
  font-size: 0.95rem;
  padding: 0.25rem 0.25rem;
}

.hero-nav a:hover {
  color: var(--text);
  text-decoration: none;
}

.hero-nav__primary {
  background: var(--accent);
  color: #fff !important;
  padding: 0.5rem 1.5rem !important;
  border-radius: 4px;
  font-weight: 600;
  transition: background 0.2s;
}

.hero-nav__primary:hover {
  background: var(--accent-hover);
}

.github-link svg {
  vertical-align: -2px;
  fill: currentColor;
}

/* --- Hero Mockup --- */
.hero-mockup {
  position: relative;
  max-width: 720px;
  margin: 3rem auto 0;
}

.mockup-browser {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
}

[data-theme="dark"] .mockup-browser {
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.mockup-browser__bar {
  display: flex;
  gap: 6px;
  padding: 10px 14px;
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
}

.mockup-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border);
}

.mockup-browser img {
  width: 100%;
  display: block;
}

.mockup-phone {
  position: absolute;
  bottom: -24px;
  right: -20px;
  width: 160px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 8px 4px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] .mockup-phone {
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
}

.mockup-phone img {
  width: 100%;
  display: block;
  border-radius: 10px;
}

@media (max-width: 640px) {
  .hero-mockup {
    margin-top: 2rem;
  }

  .mockup-phone {
    width: 110px;
    bottom: -16px;
    right: -8px;
    border-radius: 12px;
    padding: 6px 3px;
  }

  .mockup-phone img {
    border-radius: 8px;
  }
}

/* --- Section Rules --- */
.section-rule {
  border: none;
  border-top: 1px solid var(--border);
  margin: 0;
}

/* --- Pitch Section --- */
.pitch {
  padding: 4rem 0;
}

.pitch h2 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.accent {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  padding: 0.05em 0.4em;
  border-radius: 4px;
  transform: rotate(-1.5deg);
  text-decoration: none;
}

[data-theme="dark"] .accent {
  background: var(--accent);
  color: #111;
}

.pitch-intro {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 600px;
  margin-bottom: 2.5rem;
}

/* --- Feature Grid --- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
}

.feature {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1.5rem;
}

.feature-icon {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.feature h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.feature p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* --- Principles Section --- */
.principles {
  padding: 4rem 0;
}

.principles h2 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 2rem;
}


.principles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.principle h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.principle p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* --- Screenshots Section --- */
.screenshots {
  padding: 4rem 0;
}

.screenshots h2 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 2rem;
}


.screenshot-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.25rem;
}

.screenshot-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  cursor: zoom-in;
}

.screenshot-card img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  background: var(--bg-alt);
}

.screenshot-card .placeholder {
  width: 100%;
  aspect-ratio: 16 / 10;
  background: var(--bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.screenshot-card figcaption {
  padding: 0.75rem 1rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* --- Install / Get Started --- */
.install {
  padding: 4rem 0;
}

.install h2 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
}


.install pre {
  background: var(--code-bg);
  color: var(--code-text);
  padding: 1.25rem 1.5rem;
  border-radius: 8px;
  overflow-x: auto;
  font-size: 0.85rem;
  line-height: 1.6;
  margin-bottom: 1rem;
}

.install pre .comment {
  color: var(--code-comment);
}

.install p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

/* --- Footer --- */
footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  text-align: center;
}

.footer-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
}

.footer-nav a {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-nav a:hover {
  color: var(--text);
}

.footer-sep {
  color: var(--text-muted);
  user-select: none;
}

.footer-copy {
  color: var(--text-muted);
  font-size: 0.8rem;
}

/* --- Tags --- */
.tag {
  display: inline-block;
  background: var(--tag-bg);
  color: var(--tag-text);
  font-size: 0.75rem;
  padding: 0.15rem 0.6rem;
  border-radius: 999px;
  font-weight: 500;
}

/* ============================================
   Docs Page Styles
   ============================================ */

.docs-header {
  background: var(--hero-bg);
  padding: 3rem 0 2rem;
  border-bottom: 1px solid var(--border);
}

.docs-header h1 {
  font-size: 2rem;
  font-weight: 700;
}

.docs-header .breadcrumb {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.docs-header .breadcrumb a {
  color: var(--text-muted);
}

.docs-body {
  padding: 3rem 0 4rem;
}

.docs-body h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-top: 3rem;
  margin-bottom: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.docs-body h2:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: none;
}

.docs-body h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

.docs-body p {
  margin-bottom: 1rem;
  color: var(--text);
}

.docs-body ul, .docs-body ol {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
}

.docs-body li {
  margin-bottom: 0.35rem;
}

.docs-body pre {
  background: var(--code-bg);
  color: var(--code-text);
  padding: 1.25rem 1.5rem;
  border-radius: 8px;
  overflow-x: auto;
  font-size: 0.85rem;
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.docs-body code {
  background: var(--tag-bg);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-size: 0.85em;
}

.docs-body pre code {
  background: none;
  padding: 0;
  border-radius: 0;
  font-size: inherit;
}

.docs-body .comment {
  color: var(--code-comment);
}

.docs-body .callout {
  background: var(--bg-alt);
  border-left: 3px solid var(--accent);
  padding: 1rem 1.25rem;
  margin-bottom: 1.5rem;
  border-radius: 0 6px 6px 0;
  font-size: 0.95rem;
}

.docs-body .callout p {
  margin-bottom: 0;
}

.docs-body .env-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
}

.docs-body .env-table th,
.docs-body .env-table td {
  text-align: left;
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--border);
}

.docs-body .env-table th {
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.docs-body .env-table code {
  font-size: 0.8rem;
}

/* --- TOC sidebar (docs) --- */
.docs-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 960px) {
  .docs-layout {
    grid-template-columns: 1fr 200px;
  }
}

.docs-toc {
  display: none;
}

@media (min-width: 960px) {
  .docs-toc {
    display: block;
    position: sticky;
    top: 2rem;
    align-self: start;
  }

  .docs-toc h4 {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
  }

  .docs-toc a {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    padding: 0.2rem 0;
    line-height: 1.4;
  }

  .docs-toc a:hover {
    color: var(--text);
    text-decoration: none;
  }
}

/* --- Responsive --- */
@media (max-width: 640px) {
  .hero {
    padding: 2rem 0 3rem;
  }

  .hero h1 {
    font-size: 2.5rem;
  }

  .hero .tagline {
    font-size: 1.05rem;
  }

  .screenshot-grid {
    grid-template-columns: 1fr;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }
}

/* --- Zoom Overlay --- */
.zoom-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(0, 0, 0, 0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: zoom-out;
  opacity: 0;
  transition: opacity 0.25s ease;
}

.zoom-overlay--active {
  opacity: 1;
}

.zoom-overlay img {
  max-width: 92vw;
  max-height: 92vh;
  border-radius: 6px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
  transform: scale(0.95);
  transition: transform 0.25s ease;
}

.zoom-overlay--active img {
  transform: scale(1);
}