/* ============================================================
   Trust Tasks — Stylesheet
   Imports tokens.css and applies them to elements + components.
   ============================================================ */

@import url('./tokens.css');

/* ------------------------------------------------------------
   Reset / base
   ------------------------------------------------------------ */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  margin: 0;
  background: var(--tt-bg);
  color: var(--tt-text);
  font-family: var(--tt-font-body);
  font-size: var(--tt-text-base);
  line-height: var(--tt-leading-body);
  font-feature-settings: "ss01", "cv11";

  /* Subtle paper texture — concentric warm gradients, no banding */
  background-image:
    radial-gradient(1200px 600px at 90% -10%, rgba(251, 113, 133, 0.06), transparent 60%),
    radial-gradient(900px 500px at -10% 20%, rgba(13, 148, 136, 0.05), transparent 55%),
    radial-gradient(700px 400px at 50% 110%, rgba(139, 92, 246, 0.04), transparent 60%);
  background-attachment: fixed;
}

img, svg { display: block; max-width: 100%; }

::selection {
  background: var(--tt-amber);
  color: var(--tt-navy);
}

/* ------------------------------------------------------------
   Typography
   ------------------------------------------------------------ */
h1, h2, h3, h4, h5 {
  font-family: var(--tt-font-display);
  color: var(--tt-text);
  font-weight: 400;
  line-height: var(--tt-leading-tight);
  letter-spacing: var(--tt-tracking-tight);
  margin: 0 0 var(--tt-space-4);
  /* Fraunces variable axes — subtle optical adjustments */
  font-variation-settings: "SOFT" 30, "WONK" 0, "opsz" 144;
}

h1 { font-size: clamp(2.5rem, 6vw, var(--tt-text-4xl)); font-weight: 350; }
h2 { font-size: clamp(2rem, 4vw, var(--tt-text-3xl)); font-weight: 380; }
h3 { font-size: var(--tt-text-2xl); font-weight: 400; }
h4 { font-size: var(--tt-text-xl); font-weight: 450; }
h5 { font-size: var(--tt-text-lg); font-weight: 500; }

p { margin: 0 0 var(--tt-space-4); color: var(--tt-text-muted); max-width: 62ch; }
p.lead {
  font-size: var(--tt-text-md);
  line-height: var(--tt-leading-snug);
  color: var(--tt-text);
  max-width: 56ch;
}

a {
  color: var(--tt-link);
  text-decoration: none;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  border-bottom: 1px solid currentColor;
  transition: color var(--tt-duration-1) var(--tt-ease);
}
a:hover { color: var(--tt-link-hover); }

code, kbd, samp {
  font-family: var(--tt-font-mono);
  font-size: 0.92em;
  background: var(--tt-surface-alt);
  padding: 0.15em 0.4em;
  border-radius: var(--tt-radius-sm);
  border: 1px solid var(--tt-border);
}

pre {
  font-family: var(--tt-font-mono);
  font-size: var(--tt-text-sm);
  line-height: 1.7;
  background: var(--tt-navy);
  color: #e7eef7;
  padding: var(--tt-space-5);
  border-radius: var(--tt-radius-lg);
  overflow-x: auto;
  margin: 0;
}
pre code {
  background: transparent;
  border: none;
  padding: 0;
  color: inherit;
}

/* Eyebrow label — small caps, mega tracking */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--tt-space-2);
  font-family: var(--tt-font-mono);
  font-size: var(--tt-text-xs);
  font-weight: 500;
  letter-spacing: var(--tt-tracking-mega);
  text-transform: uppercase;
  color: var(--tt-text-muted);
}
.eyebrow::before {
  content: "";
  width: 18px; height: 1px;
  background: currentColor;
}

/* ------------------------------------------------------------
   Layout
   ------------------------------------------------------------ */
.container {
  width: 100%;
  max-width: var(--tt-container);
  margin-inline: auto;
  padding-inline: var(--tt-gutter);
}
.container--narrow { max-width: var(--tt-container-sm); }
.container--wide   { max-width: var(--tt-container-wide); }

section {
  padding-block: clamp(var(--tt-space-8), 8vw, var(--tt-space-10));
}

.section-head {
  margin-bottom: var(--tt-space-7);
  max-width: 38rem;
}

/* ------------------------------------------------------------
   Buttons
   ------------------------------------------------------------ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--tt-space-2);
  padding: 0.85em 1.4em;
  font-family: var(--tt-font-body);
  font-size: var(--tt-text-sm);
  font-weight: 500;
  letter-spacing: 0.01em;
  border-radius: var(--tt-radius-pill);
  border: 1.5px solid transparent;
  background: transparent;
  color: var(--tt-text);
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  line-height: 1.2;
  transition: transform var(--tt-duration-1) var(--tt-ease),
              background var(--tt-duration-2) var(--tt-ease),
              color var(--tt-duration-2) var(--tt-ease),
              border-color var(--tt-duration-2) var(--tt-ease);
}
.btn:hover { transform: translateY(-1px); }

.btn--primary {
  background: var(--tt-accent);
  color: var(--tt-accent-on);
  border-color: var(--tt-accent);
}
.btn--primary:hover { background: var(--tt-teal); border-color: var(--tt-teal); color: #fff; }

.btn--ghost {
  border-color: var(--tt-line-strong);
  color: var(--tt-text);
}
.btn--ghost:hover { border-color: var(--tt-text); }

.btn { text-decoration: none; }
/* Anchor-as-button: the global `a { border-bottom: 1px solid currentColor }` underline
   collides with the button's own pill border. Reassert the full border explicitly. */
a.btn,
a.btn:hover {
  text-decoration: none;
  border-bottom-width: 1.5px;
}
a.btn[class*="--primary"] { border-bottom-color: var(--tt-accent); }
a.btn[class*="--ghost"]   { border-bottom-color: var(--tt-line-strong); }
a.btn[class*="--ghost"]:hover { border-bottom-color: var(--tt-text); }
a.btn[class*="--primary"]:hover { border-bottom-color: var(--tt-teal); }

/* ------------------------------------------------------------
   Brand motif components
   ------------------------------------------------------------ */

/* The "node — tick — node" inline mark, scalable via font-size */
.bond {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  vertical-align: -0.15em;
}
.bond .node {
  width: 0.55em; height: 0.55em;
  border-radius: 50%;
  flex-shrink: 0;
}
.bond .node--coral { background: var(--tt-coral); }
.bond .node--teal  { background: var(--tt-teal); }
.bond .node--sky   { background: var(--tt-sky); }
.bond .node--violet{ background: var(--tt-violet); }
.bond .tick {
  width: 1.4em; height: 0.8em;
  flex-shrink: 0;
}

/* Bracket-framed callout — uses the protocol-frame motif as content frame */
.bracket-frame {
  position: relative;
  padding: var(--tt-space-7) var(--tt-space-7);
}
.bracket-frame::before,
.bracket-frame::after {
  content: "";
  position: absolute;
  top: 0; bottom: 0;
  width: 18px;
  border: 1.5px solid;
  border-top-style: solid;
  border-bottom-style: solid;
}
.bracket-frame::before {
  left: 0;
  border-color: var(--tt-violet);
  border-right: none;
  border-radius: var(--tt-radius) 0 0 var(--tt-radius);
}
.bracket-frame::after {
  right: 0;
  border-color: var(--tt-amber);
  border-left: none;
  border-radius: 0 var(--tt-radius) var(--tt-radius) 0;
}

/* Section divider with center node — visual rhythm between sections */
.protocol-rule {
  display: flex;
  align-items: center;
  gap: var(--tt-space-4);
  border: 0;
  margin: 0;
  padding-block: var(--tt-space-6);
}
.protocol-rule::before,
.protocol-rule::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--tt-line);
}
.protocol-rule .node {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--tt-coral);
  box-shadow:
    14px 0 0 0 var(--tt-navy),
    28px 0 0 0 var(--tt-teal);
  margin-right: 28px;
}

/* Pill — entity badges, status tags */
.pill {
  display: inline-flex;
  align-items: center;
  gap: var(--tt-space-2);
  padding: 0.35em 0.85em;
  font-family: var(--tt-font-mono);
  font-size: var(--tt-text-xs);
  letter-spacing: 0.02em;
  border-radius: var(--tt-radius-pill);
  background: var(--tt-surface);
  border: 1px solid var(--tt-border);
  color: var(--tt-text);
  white-space: nowrap;
  line-height: 1.2;
}
.pill .dot {
  width: 6px; height: 6px;
  border-radius: 50%;
}
.pill--coral  .dot { background: var(--tt-coral); }
.pill--teal   .dot { background: var(--tt-teal); }
.pill--violet .dot { background: var(--tt-violet); }
.pill--amber  .dot { background: var(--tt-amber); }
.pill--sky    .dot { background: var(--tt-sky); }

/* ------------------------------------------------------------
   Cards
   ------------------------------------------------------------ */
.card {
  background: var(--tt-surface);
  border: 1px solid var(--tt-border);
  border-radius: var(--tt-radius-lg);
  padding: var(--tt-space-6);
  transition: transform var(--tt-duration-2) var(--tt-ease),
              border-color var(--tt-duration-2) var(--tt-ease),
              box-shadow var(--tt-duration-2) var(--tt-ease);
}
.card:hover {
  transform: translateY(-2px);
  border-color: var(--tt-line-strong);
  box-shadow: var(--tt-shadow);
}
.card .card__index {
  font-family: var(--tt-font-mono);
  font-size: var(--tt-text-xs);
  letter-spacing: var(--tt-tracking-wide);
  color: var(--tt-text-muted);
  margin-bottom: var(--tt-space-4);
}
.card h4 { margin-bottom: var(--tt-space-3); }
.card p:last-child { margin-bottom: 0; }

/* Feature card — accent stripe at top */
.card--accent { position: relative; overflow: hidden; }
.card--accent::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: var(--accent, var(--tt-coral));
}
.card--coral  { --accent: var(--tt-coral); }
.card--teal   { --accent: var(--tt-teal); }
.card--violet { --accent: var(--tt-violet); }
.card--amber  { --accent: var(--tt-amber); }
.card--sky    { --accent: var(--tt-sky); }

/* ------------------------------------------------------------
   Grids
   ------------------------------------------------------------ */
.grid {
  display: grid;
  gap: var(--tt-space-5);
}
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.grid--4 { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }

/* ------------------------------------------------------------
   Navigation
   ------------------------------------------------------------ */
.nav {
  position: sticky;
  top: 0;
  z-index: var(--tt-z-nav);
  background: color-mix(in srgb, var(--tt-bg) 85%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--tt-border);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--tt-space-4);
  gap: var(--tt-space-5);
}
.nav__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--tt-space-3);
  font-family: var(--tt-font-display);
  font-size: var(--tt-text-md);
  font-weight: 450;
  color: var(--tt-text);
  border-bottom: none;
  letter-spacing: -0.01em;
}
.nav__links {
  display: flex;
  gap: var(--tt-space-5);
  list-style: none;
  margin: 0; padding: 0;
}
.nav__links a {
  font-size: var(--tt-text-sm);
  color: var(--tt-text-muted);
  border-bottom: none;
}
.nav__links a:hover { color: var(--tt-text); }

@media (max-width: 720px) {
  .nav__links { display: none; }
}

/* ------------------------------------------------------------
   Hero
   ------------------------------------------------------------ */
.hero {
  position: relative;
  padding-block: clamp(var(--tt-space-9), 12vw, var(--tt-space-10));
  overflow: hidden;
}
.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: var(--tt-space-8);
  align-items: center;
}
@media (max-width: 880px) {
  .hero__grid { grid-template-columns: 1fr; }
}
.hero h1 {
  margin-bottom: var(--tt-space-5);
}
.hero__sub {
  font-size: var(--tt-text-md);
  color: var(--tt-text-muted);
  max-width: 38ch;
  margin-bottom: var(--tt-space-6);
}
.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--tt-space-3);
}
.hero__visual {
  background: var(--tt-surface);
  border: 1px solid var(--tt-border);
  border-radius: var(--tt-radius-xl);
  padding: var(--tt-space-5);
  box-shadow: var(--tt-shadow-lg);
}

/* ------------------------------------------------------------
   Footer
   ------------------------------------------------------------ */
.footer {
  border-top: 1px solid var(--tt-border);
  padding-block: var(--tt-space-7);
  margin-top: var(--tt-space-9);
}
.footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--tt-space-4);
}
.footer small {
  font-family: var(--tt-font-mono);
  font-size: var(--tt-text-xs);
  letter-spacing: var(--tt-tracking-wide);
  color: var(--tt-text-muted);
  text-transform: uppercase;
}

/* ------------------------------------------------------------
   Animation primitives
   ------------------------------------------------------------ */
@keyframes tt-rise {
  from { transform: translateY(14px); }
  to   { transform: translateY(0); }
}
.tt-rise {
  opacity: 1;
  animation: tt-rise var(--tt-duration-4) var(--tt-ease-out);
}
.tt-rise-1 { animation-delay: 60ms; }
.tt-rise-2 { animation-delay: 160ms; }
.tt-rise-3 { animation-delay: 260ms; }
.tt-rise-4 { animation-delay: 360ms; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}