/* ===== Language toggle (EN/TR) ===== */
:root[data-lang="en"] .tr { display: none; }
:root[data-lang="tr"] .en { display: none; }

/* ===== Tokens ===== */
:root {
  --bg: #ffffff;
  --bg-alt: #f5f6f9;
  --surface: #ffffff;
  --border: #e5e7eb;
  --text: #15181f;
  --muted: #5b6472;
  --accent: #4f46e5;
  --accent-2: #7c83ff;
  --accent-contrast: #ffffff;
  --accent-soft: rgba(79, 70, 229, .10);
  --shadow: 0 1px 2px rgba(16, 24, 40, .04), 0 8px 24px rgba(16, 24, 40, .06);
  --shadow-lg: 0 12px 40px rgba(16, 24, 40, .12);
  --radius: 14px;
  --max: 1080px;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1117;
    --bg-alt: #0f141d;
    --surface: #151b24;
    --border: #232b38;
    --text: #e6edf3;
    --muted: #94a1b2;
    --accent: #7c83ff;
    --accent-2: #a5acff;
    --accent-soft: rgba(124, 131, 255, .14);
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .35);
    --shadow-lg: 0 16px 44px rgba(0, 0, 0, .5);
  }
}

/* ===== Base ===== */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code {
  font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: .9em;
  background: var(--accent-soft);
  padding: .1em .4em;
  border-radius: 6px;
}
h1, h2, h3 { line-height: 1.2; margin: 0 0 .5em; }
p { margin: 0 0 1em; }

/* ===== Layout ===== */
.nav, .section, .hero, .footer { width: 100%; }
.hero, .section > *, .footer > * { max-width: var(--max); margin-left: auto; margin-right: auto; }
.section { padding: 64px 20px; margin: 0 auto; }
.section:nth-child(even) { background: var(--bg-alt); }

/* ===== Nav ===== */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 20px;
  max-width: var(--max);
  margin: 0 auto;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: baseline; gap: 8px; font-weight: 700; font-size: 1.15rem; color: var(--text); text-decoration: none; }
.brand:hover { text-decoration: none; }
.brand-mark { font-family: ui-serif, Georgia, serif; letter-spacing: -1px; }
.brand-tex { font-style: italic; color: var(--accent); }
.brand-name { font-size: .95rem; font-weight: 600; }
.nav-actions { display: flex; align-items: center; gap: 10px; }
.lang-toggle {
  font: inherit;
  font-size: .85rem;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--text);
  background: var(--accent-soft);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 12px;
  cursor: pointer;
  transition: background .15s, transform .1s;
}
.lang-toggle:hover { background: var(--accent); color: var(--accent-contrast); }
.lang-toggle:active { transform: scale(.96); }

/* ===== Buttons ===== */
.primary-btn, .ghost-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font: inherit;
  font-weight: 600;
  font-size: .92rem;
  border-radius: 9px;
  padding: 9px 16px;
  cursor: pointer;
  transition: transform .1s, box-shadow .15s, background .15s;
  text-decoration: none;
  white-space: nowrap;
}
.primary-btn { background: var(--accent); color: var(--accent-contrast); border: 1px solid var(--accent); }
.primary-btn:hover { background: var(--accent-2); border-color: var(--accent-2); text-decoration: none; transform: translateY(-1px); box-shadow: var(--shadow); }
.ghost-btn { background: transparent; color: var(--text); border: 1px solid var(--border); }
.ghost-btn:hover { border-color: var(--accent); color: var(--accent); text-decoration: none; transform: translateY(-1px); }
.lg { padding: 12px 22px; font-size: 1rem; }

/* ===== Hero ===== */
.hero {
  display: grid;
  grid-template-columns: 1fr 1.8fr;
  align-items: center;
  gap: 40px;
  padding: 56px 20px 64px;
  margin: 0 auto;
}
.hero h1 { font-size: clamp(1.9rem, 4vw, 2.9rem); font-weight: 800; letter-spacing: -.02em; }
.lead { font-size: 1.15rem; color: var(--muted); max-width: 38ch; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin: 20px 0 18px; }
.badges { display: flex; flex-wrap: wrap; gap: 6px; }
.badges img { height: 22px; }
.hero-media { display: flex; justify-content: center; }
.hero-img, .spotlight-media img {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  background: var(--surface);
}
.hero-img { max-width: 760px; }
.spotlight-media img {
  max-width: 940px;
  display: block;
  margin: 28px auto 0;
}

/* ===== Section titles ===== */
.section-title { font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 800; letter-spacing: -.01em; }
.section-sub { color: var(--muted); margin-top: -.25em; }

/* ===== Card grids ===== */
.card-grid { display: grid; gap: 16px; margin-top: 28px; }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-auto { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  transition: transform .15s, box-shadow .15s, border-color .15s;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: color-mix(in srgb, var(--accent) 40%, var(--border)); }

/* Differentiator cards */
.diff .diff-icon {
  font-family: ui-monospace, monospace;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 10px;
  letter-spacing: -.02em;
}
.diff h3 { font-size: 1.02rem; }
.diff p { font-size: .9rem; color: var(--muted); margin: 0; }

/* Feature cards */
.feat { display: flex; flex-direction: column; gap: 6px; }
.feat-emoji { font-size: 1.4rem; }
.feat h3 { font-size: 1rem; margin: 0; }
.feat p { font-size: .88rem; color: var(--muted); margin: 0; }

/* ===== Spotlight ===== */
.spotlight {
  display: block;
}
.spotlight-text { max-width: 760px; }
.spotlight .lead { max-width: none; }
.check-list { list-style: none; padding: 0; margin: 16px 0 0; display: grid; gap: 8px; }
.check-list li { position: relative; padding-left: 26px; color: var(--muted); }
.check-list li::before { content: "✓"; position: absolute; left: 0; color: var(--accent); font-weight: 700; }

/* ===== Themes ===== */
.themes .swatch { height: 84px; border-radius: 10px; margin-bottom: 12px; border: 1px solid var(--border); }
.themes h3 { font-size: .95rem; margin: 0; }
.swatch-dark       { background: linear-gradient(90deg, #1e1e1e 0 38%, #569cd6 38% 52%, #dcdcaa 52% 66%, #ce9178 66% 80%, #c586c0 80% 94%, #1e1e1e 94%); }
.swatch-light      { background: linear-gradient(90deg, #ffffff 0 38%, #0000ff 38% 52%, #267fff 52% 66%, #098658 66% 80%, #d19a66 80% 94%, #ffffff 94%); }
.swatch-solarized  { background: linear-gradient(90deg, #fdf6e3 0 38%, #268bd2 38% 52%, #b58900 52% 66%, #859900 66% 80%, #cb4b16 80% 94%, #fdf6e3 94%); }
.swatch-dracula    { background: linear-gradient(90deg, #282a36 0 38%, #bd93f9 38% 52%, #ff79c6 52% 66%, #50fa7b 66% 80%, #f1fa8c 80% 94%, #282a36 94%); }
.swatch-monokai    { background: linear-gradient(90deg, #272822 0 38%, #f92672 38% 52%, #a6e22e 52% 66%, #66d9ef 66% 80%, #fd971f 80% 94%, #272822 94%); }
.swatch-nord       { background: linear-gradient(90deg, #2e3440 0 38%, #88c0d0 38% 52%, #81a1c1 52% 66%, #ebcb8b 66% 80%, #a3be8c 80% 94%, #2e3440 94%); }
.swatch-gruvbox    { background: linear-gradient(90deg, #282828 0 38%, #fb4934 38% 52%, #fabd2f 52% 66%, #b8bb26 66% 80%, #83a598 80% 94%, #282828 94%); }

/* ===== Download ===== */
.download .dl h3 { font-size: 1.15rem; }
.download .dl p { color: var(--muted); }
.note { color: var(--muted); font-size: .9rem; margin-top: 16px; }

/* ===== Setup ===== */
.setup { grid-template-columns: 1fr; max-width: 860px; }
.setup .setup-col h3 { font-size: 1.1rem; }
.steps { margin: 12px 0 0; padding-left: 22px; display: grid; gap: 18px; }
.steps > li { line-height: 1.55; }
.cmd { position: relative; margin-top: 10px; }
.cmd pre {
  margin: 0;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 60px 14px 14px;
  overflow-x: auto;
}
.cmd pre code {
  background: transparent;
  padding: 0;
  font-size: .84rem;
  line-height: 1.5;
  color: var(--text);
  white-space: pre;
}
.copy-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  font: inherit;
  font-size: .72rem;
  font-weight: 600;
  color: var(--muted);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 10px;
  cursor: pointer;
  transition: color .15s, border-color .15s;
}
.copy-btn:hover { color: var(--accent); border-color: var(--accent); }
.copy-btn.copied { color: #2ea043; border-color: #2ea043; }

/* ===== FAQ ===== */
.faq { margin-top: 24px; display: grid; gap: 0; max-width: 760px; }
.faq details { border-bottom: 1px solid var(--border); padding: 4px 0; }
.faq summary {
  cursor: pointer;
  font-weight: 600;
  padding: 14px 0;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--accent); font-weight: 700; font-size: 1.2rem; transition: transform .2s; }
.faq details[open] summary::after { content: "−"; }
.faq details p { color: var(--muted); margin: 0 0 14px; max-width: 70ch; }

/* ===== Footer ===== */
.footer {
  border-top: 1px solid var(--border);
  padding: 36px 20px;
  text-align: center;
  color: var(--muted);
  font-size: .92rem;
}
.footer p { margin: 4px auto; }
.footer-sub { font-size: .85rem; opacity: .8; }

/* ===== Responsive ===== */
@media (max-width: 880px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .hero { grid-template-columns: 1fr; gap: 32px; }
  .hero-media { order: -1; }
  .spotlight { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .grid-4, .grid-2 { grid-template-columns: 1fr; }
  .nav { flex-wrap: wrap; }
  .nav-actions { width: 100%; justify-content: flex-end; }
  .section { padding: 44px 18px; }
  .lead { font-size: 1.05rem; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; scroll-behavior: auto !important; }
}