/* ============================================================================
   Siphrix — Base  ·  reset, typography, shared primitives
   ============================================================================ */

*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: var(--lh);
  letter-spacing: var(--tracking);
  color: var(--ink);
  background: var(--bg-0);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  min-height: 100vh;
}

/* Persistent aurora wash + faint grid behind everything */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: var(--z-bg);
  pointer-events: none;
  background: var(--grad-aurora);
}
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: var(--z-bg);
  pointer-events: none;
  opacity: .5;
  background-image:
    linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(1200px 700px at 50% 0%, #000 0%, transparent 75%);
}

img, svg, canvas { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; background: none; border: none; }
input, select, textarea { font: inherit; color: inherit; }
::selection { background: rgba(43, 212, 189, .3); color: #fff; }

:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 3px;
  border-radius: 6px;
}

/* --- Typography ----------------------------------------------------------- */
h1, h2, h3, h4 { line-height: 1.12; letter-spacing: -0.02em; font-weight: 650; }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); }
p { color: var(--ink-2); }
code, kbd, samp, pre { font-family: var(--font-mono); font-size: .92em; }

.mono { font-family: var(--font-mono); }
.gradient-text {
  background: var(--grad-teal);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.ink-grad {
  background: var(--grad-ink);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* --- Layout helpers ------------------------------------------------------- */
.wrap { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gut); }
.prose { max-width: var(--maxw-prose); }
.section { position: relative; z-index: var(--z-content); padding-block: clamp(4rem, 10vw, 8rem); }
.center { text-align: center; }
.stack { display: flex; flex-direction: column; }
.row { display: flex; align-items: center; }
.hidden { display: none !important; }

/* --- Eyebrow / section heads ---------------------------------------------- */
.eyebrow {
  display: inline-flex; align-items: center; gap: .55rem;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--teal);
  padding: .4rem .8rem;
  border: 1px solid var(--line-teal);
  border-radius: var(--radius-pill);
  background: rgba(43, 212, 189, .06);
}
.eyebrow::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%;
  background: var(--teal); box-shadow: 0 0 10px var(--teal);
  animation: pulse-dot 2.4s var(--ease) infinite;
}
@keyframes pulse-dot { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:.4;transform:scale(.7)} }

.section-head { max-width: 720px; margin-bottom: clamp(2rem, 5vw, 3.5rem); }
.section-head.center { margin-inline: auto; }
.section-head h2 { margin: 1rem 0 .9rem; }
.section-head p { font-size: 1.125rem; color: var(--ink-2); }

/* --- Buttons -------------------------------------------------------------- */
.btn {
  --b-bg: var(--bg-3);
  display: inline-flex; align-items: center; justify-content: center; gap: .6rem;
  padding: .85rem 1.4rem;
  border-radius: var(--radius-pill);
  font-weight: 600; font-size: .98rem;
  background: var(--b-bg);
  border: 1px solid var(--line-2);
  color: var(--ink);
  transition: transform var(--t-fast) var(--spring),
              box-shadow var(--t) var(--ease),
              background var(--t) var(--ease),
              border-color var(--t) var(--ease);
  will-change: transform;
}
.btn:hover { transform: translateY(-2px); border-color: var(--line-teal); }
.btn:active { transform: translateY(0); }
.btn svg { width: 18px; height: 18px; }

.btn-primary {
  background: var(--grad-teal);
  color: var(--ink-on-teal);
  border-color: transparent;
  box-shadow: 0 8px 30px -8px var(--allow-glow);
  font-weight: 700;
}
.btn-primary:hover { box-shadow: 0 14px 44px -8px var(--allow-glow); }

.btn-ghost { background: rgba(255,255,255,.03); }
.btn-lg { padding: 1.05rem 1.8rem; font-size: 1.05rem; }
.btn-block { width: 100%; }

/* --- Cards & glass -------------------------------------------------------- */
.card {
  position: relative;
  background: var(--bg-3);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}
.glass {
  background: var(--glass);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  backdrop-filter: blur(18px) saturate(140%);
  border: 1px solid var(--line-2);
}
/* gradient-border-on-hover wrapper */
.glow-border { position: relative; }
.glow-border::after {
  content: ""; position: absolute; inset: -1px; border-radius: inherit;
  padding: 1px; background: var(--grad-teal);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  opacity: 0; transition: opacity var(--t) var(--ease); pointer-events: none;
}
.glow-border:hover::after { opacity: .8; }

/* --- Badges / pills ------------------------------------------------------- */
.badge {
  display: inline-flex; align-items: center; gap: .4rem;
  font-family: var(--font-mono); font-size: var(--fs-xs);
  letter-spacing: .04em; padding: .28rem .6rem;
  border-radius: var(--radius-pill); border: 1px solid var(--line-2);
  color: var(--ink-2); white-space: nowrap;
}
.badge-dot { width: 7px; height: 7px; border-radius: 50%; }
.badge.allow  { color: var(--allow); border-color: rgba(43,212,189,.4); background: rgba(43,212,189,.08); }
.badge.block  { color: var(--block); border-color: rgba(224,85,107,.4); background: rgba(224,85,107,.08); }
.badge.abort  { color: var(--abort); border-color: rgba(246,167,64,.4); background: rgba(246,167,64,.08); }
.badge.review { color: var(--review); border-color: rgba(139,123,255,.4); background: rgba(139,123,255,.08); }

.badge.shipping { color: var(--allow); border-color: rgba(43,212,189,.4); background: rgba(43,212,189,.08); }
.badge.contract { color: var(--cyan); border-color: rgba(56,225,255,.35); background: rgba(56,225,255,.07); }
.badge.external { color: var(--abort); border-color: rgba(246,167,64,.35); background: rgba(246,167,64,.07); }

/* --- Divider -------------------------------------------------------------- */
.hr { height: 1px; border: 0; background: var(--grad-line); margin-block: 0; }

/* --- Scroll-reveal (progressive enhancement) ------------------------------
   Only hidden when JS is active (html.js). Without JS, everything shows. */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .7s var(--ease-out), transform .7s var(--ease-out);
  transition-delay: var(--reveal-delay, 0ms);
}
.js [data-reveal].in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .js [data-reveal] { opacity: 1; transform: none; }
}

/* --- Code blocks ---------------------------------------------------------- */
pre.code {
  background: var(--bg-1);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 1.1rem 1.25rem;
  overflow-x: auto;
  font-size: .9rem;
  line-height: 1.7;
  color: #cdd7e6;
}
pre.code .c { color: var(--ink-3); }     /* comment */
pre.code .k { color: var(--teal); }      /* keyword / command */
pre.code .s { color: var(--cyan); }      /* string */
pre.code .o { color: var(--violet); }    /* output */

/* --- Tooltip-ish caption -------------------------------------------------- */
.cap { font-family: var(--font-mono); font-size: var(--fs-xs); color: var(--ink-3); letter-spacing: .04em; }

/* --- Scrollbar ------------------------------------------------------------ */
* { scrollbar-width: thin; scrollbar-color: var(--bg-4) transparent; }
*::-webkit-scrollbar { width: 10px; height: 10px; }
*::-webkit-scrollbar-thumb { background: var(--bg-4); border-radius: 999px; border: 2px solid transparent; background-clip: content-box; }
*::-webkit-scrollbar-thumb:hover { background: #2a374a; background-clip: content-box; }