@import url("https://fonts.googleapis.com/css2?family=Fredoka:wght@400;500;600;700&family=Lilita+One&family=Outfit:wght@400;500;600;700&family=Sora:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap");

:root {
  /* Fonts */
  --font-display: "Outfit", "Sora", system-ui, sans-serif;
  --font-body:    "Sora", system-ui, -apple-system, sans-serif;
  --font-mono:    "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  /* Density multipliers (overridden by [data-density]) */
  --d: 1;

  --s-1:  calc(4px  * var(--d));
  --s-2:  calc(8px  * var(--d));
  --s-3:  calc(12px * var(--d));
  --s-4:  calc(16px * var(--d));
  --s-5:  calc(20px * var(--d));
  --s-6:  calc(28px * var(--d));
  --s-7:  calc(40px * var(--d));
  --s-8:  calc(64px * var(--d));
  --s-9:  calc(96px * var(--d));
  --s-10: calc(140px * var(--d));

  --t-xs:   12px;
  --t-sm:   13px;
  --t-base: 15px;
  --t-md:   17px;
  --t-lg:   20px;
  --t-xl:   26px;
  --t-2xl:  34px;
  --t-3xl:  46px;
  --t-4xl:  64px;
  --t-5xl:  88px;

  --r-1: 6px;
  --r-2: 10px;
  --r-3: 14px;
  --r-4: 20px;

  /* Accent - overridden by Tweaks. Text on accent is always white. */
  --accent: #874dfa;
  --accent-ink: #ffffff;

  /* Theme - DARK default */
  --bg:        #0c0a14;
  --bg-elev:   #110e1c;
  --surface:   #16121f;
  --surface-2: #1c172a;
  --surface-3: #25203a;
  --border:    rgba(255, 255, 255, 0.07);
  --border-strong: rgba(255, 255, 255, 0.14);
  --text:      #ecebf2;
  --muted:     #9c97b0;
  --dim:       #6c6884;
  --code-bg:   #0a0812;
}

[data-theme="light"] {
  --bg:        #eef2f8;
  --bg-elev:   #f6f8fc;
  --surface:   #ffffff;
  --surface-2: #e6eef8;
  --surface-3: #d6e1ef;
  --border:    rgba(20, 35, 70, 0.08);
  --border-strong: rgba(20, 35, 70, 0.16);
  --text:      #0f1a2e;
  --muted:     #4a5568;
  --dim:       #7f8a9c;
  --code-bg:   #e6eef8;
}

[data-density="compact"] { --d: 0.82; }
[data-density="regular"] { --d: 1; }
[data-density="comfy"]   { --d: 1.18; }

/* Reset */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html {
  font-family: var(--font-body);
  font-size: var(--t-base);
  line-height: 1.55;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
}
body {
  min-height: 100vh;
  background: var(--bg);
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
::selection { background: color-mix(in oklab, var(--accent) 35%, transparent); color: var(--text); }

/* Typography utilities */
.display { font-family: var(--font-display); font-weight: 600; letter-spacing: -0.01em; }
.mono    { font-family: var(--font-mono); }
.eyebrow {
  display: inline-flex; align-items: center; gap: var(--s-2);
  font-family: var(--font-mono);
  font-size: var(--t-xs);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--muted);
}
.eyebrow::before {
  content: "";
  width: 18px;
  height: 1px;
  background: var(--accent);
}

/* Layout */
.container { width: 100%; max-width: 1240px; margin: 0 auto; padding: 0 var(--s-6); position: relative; z-index: 1; }
.section { padding: var(--s-9) 0; }

/* Header / Nav */
.nav {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  background: color-mix(in oklab, var(--bg) 75%, transparent);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex; align-items: center; gap: var(--s-5);
  padding: var(--s-3) var(--s-6);
  max-width: 1240px; margin: 0 auto;
}
.brand {
  display: inline-flex; align-items: center; gap: var(--s-3);
  font-family: var(--font-display);
  font-weight: 600; letter-spacing: -0.01em;
  font-size: var(--t-md);
  color: var(--text);
}
.brand-mark {
  width: 30px; height: 30px;
  border-radius: 8px;
  object-fit: contain;
  background: transparent;
}

.nav-collapse {
  display: flex; flex: 1; align-items: center; gap: var(--s-5);
  min-width: 0;
}

.nav-links {
  display: flex; gap: var(--s-2);
}
.nav-link {
  padding: 6px 12px; border-radius: var(--r-2);
  font-size: var(--t-sm); color: var(--muted);
  transition: color .15s, background .15s;
}
.nav-link:hover { color: var(--text); background: var(--surface-2); }
.nav-link[aria-current="page"] { color: var(--text); background: var(--surface-2); }

.nav-spacer { flex: 1; }

.nav-tools {
  display: inline-flex; gap: var(--s-2); align-items: center;
}

.icon-btn {
  width: 36px; height: 36px; border-radius: var(--r-2);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  display: inline-flex; align-items: center; justify-content: center;
  transition: color .15s, background .15s, border-color .15s;
}
.icon-btn:hover { color: var(--text); background: var(--surface-2); border-color: var(--border-strong); }
.icon-btn svg { width: 16px; height: 16px; }

.is-resizing .nav-collapse,
.is-resizing .nav-burger [data-burger-open],
.is-resizing .nav-burger [data-burger-close] { transition: none !important; }

/* Suppress color/background transitions during a theme swap so the
   interpolated midpoint between dark and light values can't flash an
   off-hue tint. */
.is-theme-switching,
.is-theme-switching *,
.is-theme-switching *::before,
.is-theme-switching *::after { transition: none !important; }

.nav-burger { display: none; position: relative; }
.nav-burger svg { width: 18px; height: 18px; }
.nav-burger [data-burger-open],
.nav-burger [data-burger-close] {
  position: absolute;
  inset: 0;
  margin: auto;
  transition: opacity .15s ease;
}
.nav-burger [data-burger-close] { opacity: 0; }
.nav-burger[aria-expanded="true"] [data-burger-open] { opacity: 0; }
.nav-burger[aria-expanded="true"] [data-burger-close] { opacity: 1; }

.lang-pill {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  height: 36px; padding: 0 12px; border-radius: var(--r-2);
  font-family: var(--font-mono); font-size: var(--t-xs);
  letter-spacing: 0.08em; text-transform: uppercase;
  display: inline-flex; align-items: center; gap: 8px;
  transition: color .15s, border-color .15s;
}
.lang-pill:hover { color: var(--text); border-color: var(--border-strong); }

/* Language menu (popover from globe icon) */
.lang-menu {
  position: fixed;
  z-index: 100;
  min-width: 200px;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-2);
  padding: 4px;
  box-shadow: 0 12px 32px -8px rgba(0, 0, 0, 0.35);
}
.lang-menu-item {
  display: flex; align-items: center; gap: 10px;
  width: 100%;
  padding: 8px 10px;
  border-radius: 6px;
  color: var(--text);
  font-size: var(--t-sm);
  text-align: left;
  cursor: default;
}
.lang-menu-item:hover { background: var(--surface-2); }
.lang-menu-name { flex: 1; }
.lang-menu-region {
  font-family: var(--font-mono);
  font-size: var(--t-xs);
  color: var(--dim);
  letter-spacing: 0.08em;
}
.lang-menu-check {
  width: 16px; height: 16px;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--accent);
}
.lang-menu-check svg { width: 14px; height: 14px; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: var(--s-2);
  height: 44px; padding: 0 var(--s-5);
  border-radius: var(--r-2);
  font-family: var(--font-body); font-weight: 600;
  font-size: var(--t-sm);
  letter-spacing: 0.01em;
  border: 1px solid transparent;
  transition: transform .12s ease, background .15s, border-color .15s, color .15s;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: var(--accent);
  color: var(--accent-ink);
}
.btn-primary:hover { filter: brightness(1.05); }
.btn-secondary {
  background: var(--surface);
  border-color: var(--border-strong);
  color: var(--text);
}
.btn-secondary:hover { background: var(--surface-2); border-color: var(--accent); }
.btn-ghost {
  background: transparent;
  color: var(--muted);
}
.btn-ghost:hover { color: var(--text); background: var(--surface-2); }
.btn-sm { height: 32px; padding: 0 14px; font-size: var(--t-xs); }
.btn-lg { height: 52px; padding: 0 var(--s-6); font-size: var(--t-base); }
.btn svg { width: 16px; height: 16px; }

/* Cards */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-3);
}
.card-pad { padding: var(--s-6); }

/* Footer */
.footer {
  margin-top: var(--s-9);
  border-top: 1px solid var(--border);
  padding: var(--s-7) 0 var(--s-8);
}
.footer-inner {
  display: flex;
  flex-direction: column;
  gap: var(--s-5);
}
.footer-top {
  display: flex;
  align-items: center;
  gap: var(--s-5);
  flex-wrap: wrap;
  justify-content: space-between;
}
.footer-links {
  display: flex;
  gap: var(--s-6);
  flex-wrap: wrap;
}
.footer-links a { color: var(--muted); font-size: var(--t-sm); }
.footer-links a:hover { color: var(--text); }
.footer-copy { color: var(--dim); font-size: var(--t-xs); }

/* Code / kbd */
code, kbd, .code {
  font-family: var(--font-mono);
  font-size: 0.92em;
  background: var(--code-bg);
  padding: 2px 6px;
  border-radius: 6px;
  border: 1px solid var(--border);
}
kbd {
  padding: 1px 6px;
  font-size: 0.8em;
  border-bottom-width: 2px;
}

/* Responsive */
@media (max-width: 900px) {
  :root { --t-3xl: 36px; --t-4xl: 48px; --t-5xl: 60px; }
  .section { padding: var(--s-8) 0; }

  .nav-burger { display: inline-flex; margin-left: auto; }

  .nav-collapse {
    display: flex;
    position: absolute;
    top: 100%; left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: var(--s-4);
    padding: var(--s-4) var(--s-5) var(--s-5);
    background: color-mix(in oklab, var(--bg) 94%, transparent);
    backdrop-filter: blur(18px) saturate(140%);
    -webkit-backdrop-filter: blur(18px) saturate(140%);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 12px 32px -8px rgba(0, 0, 0, 0.35);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    pointer-events: none;
    transition: opacity .2s ease, transform .2s ease, visibility 0s linear .2s;
  }
  .nav[data-nav-open="true"] .nav-collapse {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
    transition: opacity .2s ease, transform .2s ease, visibility 0s;
  }

  .nav-links { flex-direction: column; gap: 2px; }
  .nav-link {
    padding: 10px 12px;
    font-size: var(--t-base);
    border-radius: var(--r-2);
  }

  .nav-spacer { display: none; }

  .nav-tools {
    display: flex;
    flex-direction: row;
    gap: var(--s-2);
    width: 100%;
    padding-top: var(--s-3);
    border-top: 1px solid var(--border);
  }
  .nav-tools .btn { flex: 1; min-width: 0; }
}
@media (max-width: 600px) {
  :root { --t-3xl: 28px; --t-4xl: 36px; --t-5xl: 44px; }
  .nav-inner { padding: var(--s-3) var(--s-4); }
  .container { padding: 0 var(--s-4); }
}

/* Scrollbar polish */
* { scrollbar-width: thin; scrollbar-color: var(--border-strong) transparent; }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 999px; }
::-webkit-scrollbar-track { background: transparent; }