/* ============================================================
   Agencia Byte v2 — design system
   Light base with intercalated dark sections, mono accents.
   ============================================================ */

:root{
  --accent: #FF6A1A;
  --accent-soft: #FFE7D6;
  --accent-ink: #1a0a00;

  --bg: #FAFAF7;
  --bg-elev: #FFFFFF;
  --ink: #0B1020;
  --ink-2: #2A2F45;
  --ink-3: #5B6175;
  --line: rgba(11,16,32,0.10);
  --line-strong: rgba(11,16,32,0.18);
  --grid: rgba(11,16,32,0.05);

  --dark-bg: #0B1020;
  --dark-bg-2: #0F1530;
  --dark-elev: #131A36;
  --dark-ink: #F4F4ED;
  --dark-ink-2: #B7BCD0;
  --dark-line: rgba(255,255,255,0.10);

  --radius: 14px;
  --radius-sm: 8px;

  --font-display: "Space Grotesk", ui-sans-serif, system-ui, sans-serif;
  --font-body: "Geist", ui-sans-serif, system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, monospace;

  --maxw: 1240px;
}

*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-size: 16px;
  line-height: 1.55;
}

body[data-theme="dark"]{
  background: var(--dark-bg);
  color: var(--dark-ink);
}

::selection{ background: var(--accent); color: var(--accent-ink); }

a{ color: inherit; }

/* ----- shell ----- */
.wrap{ max-width: var(--maxw); margin: 0 auto; padding: 0 32px; }
@media (max-width: 720px){ .wrap{ padding: 0 20px; } }

/* ----- type ----- */
.display{ font-family: var(--font-display); font-weight: 700; letter-spacing: -0.02em; line-height: 0.98; }
.eyebrow{
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
  display: inline-flex; align-items: center; gap: 8px;
}
body[data-theme="dark"] .eyebrow{ color: var(--dark-ink-2); }
.eyebrow .dot{
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent); box-shadow: 0 0 0 4px color-mix(in oklab, var(--accent) 30%, transparent);
}

.mono{ font-family: var(--font-mono); }

/* ----- shared sections ----- */
section{ padding: 110px 0; position: relative; }
@media (max-width: 720px){ section{ padding: 72px 0; } }

.section-dark{
  background: var(--dark-bg);
  color: var(--dark-ink);
}
.section-dark .eyebrow{ color: var(--dark-ink-2); }

/* grid backdrop */
.grid-bg{
  position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(to right, var(--grid) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 30%, #000 40%, transparent 100%);
}
.section-dark .grid-bg{
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.06) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.06) 1px, transparent 1px);
}

/* ----- nav ----- */
.nav{
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in oklab, var(--bg) 78%, transparent);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid var(--line);
}
body[data-theme="dark"] .nav{
  background: color-mix(in oklab, var(--dark-bg) 78%, transparent);
  border-bottom-color: var(--dark-line);
}
.nav-inner{
  display:flex; align-items:center; justify-content:space-between;
  padding: 14px 32px; max-width: var(--maxw); margin: 0 auto;
}
.brand{ display:flex; align-items:center; gap: 10px; font-weight: 600; letter-spacing: -0.01em; }
.brand .glyph{
  width: 32px; height: 32px; border-radius: 8px;
  display: grid; place-items: center;
  position: relative;
  overflow: visible;
}
.brand .glyph img{
  width: 100%; height: 100%;
  object-fit: contain;
  display: block;
  border-radius: 8px;
}
.brand .glyph::after{
  content:""; position:absolute; right:-3px; top:-3px;
  width: 8px; height: 8px; border-radius: 50%; background: var(--accent);
  box-shadow: 0 0 0 3px var(--bg);
}
body[data-theme="dark"] .brand .glyph::after{ box-shadow: 0 0 0 3px var(--dark-bg); }

.nav-links{ display:flex; align-items:center; gap: 28px; font-size: 14px; }
.nav-links a{ text-decoration: none; opacity: 0.8; transition: opacity .15s; }
.nav-links a:hover{ opacity: 1; }
@media (max-width: 880px){ .nav-links{ display:none; } }

.nav-cta{ display:flex; align-items:center; gap: 12px; }
.btn{
  font-family: var(--font-body); font-weight: 600;
  border: 0; padding: 10px 18px; border-radius: var(--radius-sm);
  background: var(--ink); color: var(--bg);
  cursor: pointer; font-size: 14px;
  transition: transform .15s, background .15s;
  text-decoration: none;
  display: inline-flex; align-items: center; gap: 6px;
}
.btn:hover{ transform: translateY(-1px); }
.btn:focus-visible{ outline: 2px solid var(--accent); outline-offset: 3px; }
.btn-accent{ background: var(--accent); color: var(--accent-ink); }
.btn-ghost{
  background: transparent; color: inherit;
  border: 1px solid var(--line-strong);
}
body[data-theme="dark"] .btn{ background: var(--dark-ink); color: var(--dark-bg); }
body[data-theme="dark"] .btn-accent{ background: var(--accent); color: var(--accent-ink); }
body[data-theme="dark"] .btn-ghost{ border-color: var(--dark-line); color: var(--dark-ink); background: transparent; }

/* ----- chip / badge ----- */
.chip{
  display:inline-flex; align-items:center; gap: 8px;
  padding: 6px 12px; border-radius: 999px;
  background: var(--bg-elev); border: 1px solid var(--line);
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.04em;
}
body[data-theme="dark"] .chip{ background: var(--dark-elev); border-color: var(--dark-line); }
.chip .pulse{
  width: 7px; height: 7px; border-radius:50%; background: var(--accent);
  position: relative;
}
.chip .pulse::after{
  content:""; position: absolute; inset: -3px; border-radius: 50%;
  border: 1px solid var(--accent); opacity: .6;
  animation: pulse 1.6s ease-out infinite;
}
@keyframes pulse {
  0%{ transform: scale(.6); opacity: .8;}
  100%{ transform: scale(2.2); opacity: 0;}
}

/* ----- terminal ----- */
.term{
  background: #0B1020;
  color: #E8ECEF;
  border-radius: 14px;
  padding: 16px 18px 22px;
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 1.6;
  box-shadow:
    0 1px 0 rgba(255,255,255,0.08) inset,
    0 30px 60px -20px rgba(11,16,32,0.35),
    0 8px 24px -12px rgba(11,16,32,0.25);
  border: 1px solid rgba(255,255,255,0.08);
  overflow: hidden;
  position: relative;
}
.term-bar{
  display:flex; align-items:center; gap: 8px;
  margin: -16px -18px 14px;
  padding: 10px 14px;
  background: rgba(255,255,255,0.03);
  border-bottom: 1px solid rgba(255,255,255,0.07);
}
.term-bar .dot{ width: 11px; height: 11px; border-radius:50%; }
.term-bar .d1{ background: #FF5F57; } .term-bar .d2{ background: #FEBC2E; } .term-bar .d3{ background: #28C840; }
.term-bar .title{ margin-left: 8px; font-size: 11.5px; color: rgba(255,255,255,0.5); }

.term-body{
  flex: 1;
  overflow-y: scroll;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.term-body::-webkit-scrollbar{ display: none; }

.term .ln{ display: block; white-space: pre-wrap; }
.term .prompt{ color: #5DD3A8; }
.term .arrow{ color: #FF8A4C; }
.term .key{ color: #8AB4F8; }
.term .str{ color: #FFD79A; }
.term .dim{ color: rgba(255,255,255,0.45); }
.term .ok{ color: #5DD3A8; }
.term .warn{ color: #FFD79A; }
.term .acc{ color: var(--accent); }
.cursor{
  display:inline-block; width: 8px; height: 1.05em;
  background: #E8ECEF; vertical-align: text-bottom;
  margin-left: 1px; animation: blink 1s steps(1) infinite;
}
@keyframes blink { 50%{ opacity: 0; } }

/* ----- code editor (hero variant B) ----- */
.code{
  background: #0B1020;
  color: #E8ECEF;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,0.08);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.7;
  overflow: hidden;
  box-shadow:
    0 1px 0 rgba(255,255,255,0.08) inset,
    0 30px 60px -20px rgba(11,16,32,0.35);
}
.code-tabs{
  display:flex; gap: 0; padding: 0 8px;
  background: rgba(255,255,255,0.02);
  border-bottom: 1px solid rgba(255,255,255,0.07);
}
.code-tab{
  padding: 10px 14px; font-size: 12px; color: rgba(255,255,255,0.5);
  border-bottom: 2px solid transparent;
}
.code-tab.active{ color: #fff; border-bottom-color: var(--accent); background: rgba(255,255,255,0.03);}
.code-body{ display: grid; grid-template-columns: 44px 1fr; }
.code-gutter{
  padding: 14px 0; text-align: right; color: rgba(255,255,255,0.3);
  background: rgba(255,255,255,0.015);
  user-select: none;
}
.code-gutter span{ display:block; padding-right: 12px; }
.code-content{ padding: 14px 16px; overflow-x: auto; }
.tk-kw{ color: #C792EA; }
.tk-fn{ color: #8AB4F8; }
.tk-str{ color: #FFD79A; }
.tk-num{ color: #FF8A4C; }
.tk-com{ color: rgba(255,255,255,0.4); font-style: italic; }
.tk-var{ color: #5DD3A8; }
.tk-prop{ color: #E8ECEF; }
.tk-tag{ color: #FF6A8B; }

/* ----- card ----- */
.card{
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  position: relative;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s;
}
.card:hover{
  transform: translateY(-2px);
  border-color: var(--line-strong);
  box-shadow: 0 16px 40px -20px rgba(11,16,32,0.18);
}
body[data-theme="dark"] .card{
  background: var(--dark-elev); border-color: var(--dark-line);
}

/* ----- reveal ----- */
.reveal{ opacity: 0; transform: translateY(28px); transition: opacity .8s ease, transform .8s cubic-bezier(.2,.7,.2,1); }
.reveal.in{ opacity: 1; transform: none; }
.reveal-stagger > *{ opacity: 0; transform: translateY(20px); transition: opacity .6s ease, transform .6s cubic-bezier(.2,.7,.2,1); }
.reveal-stagger.in > *{ opacity: 1; transform: none; }
.reveal-stagger.in > *:nth-child(1){ transition-delay: .05s; }
.reveal-stagger.in > *:nth-child(2){ transition-delay: .12s; }
.reveal-stagger.in > *:nth-child(3){ transition-delay: .19s; }
.reveal-stagger.in > *:nth-child(4){ transition-delay: .26s; }
.reveal-stagger.in > *:nth-child(5){ transition-delay: .33s; }
.reveal-stagger.in > *:nth-child(6){ transition-delay: .40s; }
.reveal-stagger.in > *:nth-child(7){ transition-delay: .47s; }
.reveal-stagger.in > *:nth-child(8){ transition-delay: .54s; }

/* utility */
.muted{ color: var(--ink-3); }
body[data-theme="dark"] .muted{ color: var(--dark-ink-2); }

/* underline link */
.ul-link{ position: relative; }
.ul-link::after{
  content: ""; position: absolute; left: 0; bottom: -2px; height: 1px;
  width: 100%; background: currentColor; opacity: 0.3;
  transform-origin: left; transition: transform .3s ease, opacity .2s;
}
.ul-link:hover::after{ opacity: 1; transform: scaleX(1.05); }

.divider{
  height: 1px; background: var(--line); margin: 0;
}
body[data-theme="dark"] .divider{ background: var(--dark-line); }

/* keyboard chip */
.kbd{
  display:inline-block; padding: 2px 6px; border-radius: 5px;
  font-family: var(--font-mono); font-size: 11px;
  border: 1px solid var(--line-strong); background: var(--bg-elev);
  color: var(--ink-2);
  box-shadow: 0 1px 0 var(--line);
}
body[data-theme="dark"] .kbd{ background: var(--dark-elev); border-color: var(--dark-line); color: var(--dark-ink-2); }

/* theme toggle button */
.theme-toggle{
  appearance: none; border: 1px solid var(--line-strong);
  background: transparent; color: inherit;
  width: 36px; height: 36px; border-radius: var(--radius-sm);
  display: grid; place-items: center; cursor: pointer;
  transition: background .15s, border-color .15s;
}
.theme-toggle:hover{ background: var(--bg-elev); }
.theme-toggle:focus-visible{ outline: 2px solid var(--accent); outline-offset: 3px; }
body[data-theme="dark"] .theme-toggle{ border-color: var(--dark-line); }
body[data-theme="dark"] .theme-toggle:hover{ background: var(--dark-elev); }

/* focus-visible — nav links */
.nav-links a:focus-visible,
.ul-link:focus-visible{
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
  opacity: 1;
}

/* prefers-reduced-motion */
@media (prefers-reduced-motion: reduce){
  .reveal, .reveal-stagger > *{
    transition: none;
    opacity: 1;
    transform: none;
  }
  .chip .pulse::after{ animation: none; }
  .cursor{ animation: none; opacity: 1; }
}