/* ZORTAX marketing site — shared layout, nav, buttons, sections.
   Visual language matches the design system tokens (styles.css must be
   linked before this file). Vanilla HTML/CSS/JS — no framework overhead,
   so the particle animation stays smooth across all five pages. */

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--color-canvas);
  color: var(--color-body);
  font-family: var(--font-body);
  font-weight: 300;
  opacity: 1;
  transition: opacity .35s ease;
}
body.entering, body.leaving { opacity: 0; }
a { color: var(--color-on-dark); }
a:hover { color: var(--color-body); }

.container { max-width: var(--container-max); margin: 0 auto; padding: 0 48px; }
@media (max-width: 768px) { .container { padding: 0 24px; } }

/* ---- particle field ---- */
canvas.particle-field {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}
.field-host { position: relative; overflow: hidden; }

/* ---- globe band ---- */
.globe-band .container { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-xl); align-items: center; }
.globe-host { position: relative; aspect-ratio: 1 / 1; max-width: 560px; justify-self: center; width: 100%; }
canvas.globe-field { position: absolute; inset: 0; width: 100%; height: 100%; }
@media (max-width: 900px) { .globe-band .container { grid-template-columns: 1fr; } }

/* ---- nav ---- */
.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: 64px;
  display: flex;
  align-items: center;
  gap: 40px;
  padding: 0 48px;
  background: var(--color-canvas);
  border-bottom: 1px solid var(--color-hairline);
}
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.brand:hover { color: var(--color-on-dark); }
.logo-mark { width: 26px; height: 26px; display: block; }
.wordmark {
  font-family: var(--font-display); font-weight: 800; font-size: 18px;
  letter-spacing: 1.5px; text-transform: uppercase; color: var(--color-on-dark);
}
.nav-links { display: flex; gap: 32px; list-style: none; margin: 0 auto 0 8px; padding: 0; }
.nav-links a {
  color: var(--color-body); text-decoration: none; font-size: 14px; font-weight: 400;
  letter-spacing: .5px; position: relative; padding: 22px 0;
  transition: color .18s ease;
}
.nav-links a:hover, .nav-links a.active { color: var(--color-on-dark); }
.nav-links a.active::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 18px; height: 2px;
  background: var(--gradient-stripe);
}
.nav-cta { flex: none; }

/* On desktop the wrapper is transparent to layout — brand | links | cta lay
   out exactly as three flex children of .site-nav. */
.nav-menu { display: contents; }
.nav-toggle { display: none; }

/* ---- mobile nav ---- */
@media (max-width: 860px) {
  .site-nav { gap: 16px; padding: 0 24px; }
  .nav-toggle {
    display: inline-flex; flex-direction: column; justify-content: center; align-items: center;
    gap: 5px; margin-left: auto; width: 44px; height: 44px; padding: 0;
    background: transparent; border: 1px solid var(--color-hairline); cursor: pointer;
  }
  .nav-toggle span {
    display: block; width: 20px; height: 2px; background: var(--color-on-dark);
    transition: transform .2s ease, opacity .2s ease;
  }
  .site-nav.open .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .site-nav.open .nav-toggle span:nth-child(2) { opacity: 0; }
  .site-nav.open .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .nav-menu {
    display: none;
    position: fixed; top: 64px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--color-canvas); border-bottom: 1px solid var(--color-hairline);
    padding: var(--space-xs) 24px var(--space-lg);
    max-height: calc(100vh - 64px); overflow-y: auto;
  }
  .site-nav.open .nav-menu { display: flex; }
  .nav-menu .nav-links { flex-direction: column; gap: 0; margin: 0; }
  .nav-menu .nav-links a { padding: 16px 0; border-bottom: 1px solid var(--color-hairline); }
  .nav-menu .nav-cta { align-self: flex-start; margin-top: var(--space-lg); }
}

/* ---- buttons ---- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 48px; padding: 0 32px; border-radius: var(--radius-none);
  font-family: var(--font-display); font-size: 14px; font-weight: 700;
  letter-spacing: 1.5px; text-transform: uppercase; text-decoration: none;
  cursor: pointer; transition: background-color .18s ease, color .18s ease;
  white-space: nowrap; border: 1px solid var(--color-on-dark);
}
.btn-primary { background: var(--color-canvas); color: var(--color-on-dark); }
.btn-primary:hover { background: var(--color-on-dark); color: var(--color-canvas); }
.btn-outline { background: transparent; color: var(--color-on-dark); }
.btn-outline:hover { background: var(--color-on-dark); color: var(--color-canvas); }
.text-link {
  display: inline-flex; align-items: center; gap: 8px; color: var(--color-on-dark);
  text-decoration: none; font-family: var(--font-display); font-size: 14px;
  font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase;
  transition: opacity .18s ease;
}
.text-link:hover { opacity: .7; color: var(--color-on-dark); }

/* ---- hero ---- */
.hero {
  min-height: 100vh;
  display: flex; flex-direction: column; justify-content: center;
  padding: 140px 0 96px;
  position: relative;
}
.hero-inner { position: relative; z-index: 1; max-width: 880px; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px; color: var(--color-body);
  font-family: var(--font-display); font-size: 14px; font-weight: 700;
  letter-spacing: 1.5px; text-transform: uppercase; margin-bottom: var(--space-lg);
}
.eyebrow::before {
  content: ""; width: 16px; height: 2px; background: var(--gradient-stripe);
}
.hero h1 {
  margin: 0 0 var(--space-lg);
  font-family: var(--font-display); font-weight: 700; text-transform: uppercase;
  letter-spacing: -0.5px; line-height: 1.05;
  font-size: clamp(2.4rem, 5.6vw, 4.8rem);
  color: var(--color-on-dark);
}
.hero p.lead {
  max-width: 560px; margin: 0 0 var(--space-xl);
  font-size: var(--type-title-sm-size); font-weight: 400; line-height: 1.5;
  color: var(--color-body-strong);
}
.hero .actions { display: flex; gap: var(--space-md); flex-wrap: wrap; }
.page-hero { min-height: 56vh; padding-top: 160px; }

/* ---- section rhythm ---- */
section.band { padding: var(--space-section) 0; position: relative; }
section.band.tight { padding: 72px 0; }
h2.section-head {
  font-family: var(--font-display); font-weight: 700; text-transform: uppercase;
  letter-spacing: -0.5px; font-size: var(--type-display-lg-size); line-height: 1.05;
  color: var(--color-on-dark); margin: 0 0 var(--space-xl); max-width: 640px;
}
p.section-sub {
  font-size: var(--type-body-md-size); font-weight: 300; line-height: 1.5;
  color: var(--color-body); max-width: 560px; margin: calc(-1 * var(--space-lg)) 0 var(--space-xl);
}
.stripe { height: 4px; background: var(--gradient-stripe); }

/* ---- reveal-on-scroll ---- */
[data-reveal] {
  opacity: 0; transform: translateY(24px);
  transition: opacity .8s cubic-bezier(.2,.7,.2,1), transform .8s cubic-bezier(.2,.7,.2,1);
}
[data-reveal="left"] { transform: translateX(-48px); }
[data-reveal="right"] { transform: translateX(48px); }
[data-reveal="scale"] { transform: scale(.9) translateY(16px); }
[data-reveal="stripe"] { transform: scaleX(0); transform-origin: left; }
[data-reveal].in-view { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; transition: none; }
  body.entering, body.leaving { opacity: 1; }
}

/* ---- grids & cards ---- */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-lg); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-lg); }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-lg); }
@media (max-width: 1024px) { .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .grid-3, .grid-4, .grid-2 { grid-template-columns: 1fr; } }

.card {
  background: var(--color-surface-card); border-radius: var(--radius-none);
  padding: var(--space-lg); display: flex; flex-direction: column; gap: var(--space-md);
}
.card .icon {
  width: 44px; height: 44px; display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--color-hairline-strong); color: var(--color-on-dark);
  font-family: var(--font-display); font-weight: 700; font-size: 18px;
}
.card h3 {
  margin: 0; color: var(--color-on-dark); font-family: var(--font-display);
  font-size: var(--type-title-lg-size); font-weight: 700; line-height: 1.3;
}
.card p { margin: 0; font-size: var(--type-body-md-size); font-weight: 300; color: var(--color-body); }

.stat-cell { background: var(--color-surface-soft); border-radius: var(--radius-none); padding: var(--space-xl); }
.stat-cell .value {
  color: var(--color-on-dark); font-family: var(--font-display); font-weight: 700;
  font-size: var(--type-display-sm-size); margin-bottom: var(--space-sm);
}
.stat-cell .label {
  color: var(--color-body); font-family: var(--font-display); font-weight: 700;
  font-size: 14px; letter-spacing: 1.5px; text-transform: uppercase;
}

.quote-band { text-align: center; max-width: 820px; margin: 0 auto; }
.quote-band p {
  font-family: var(--font-display); font-weight: 700; letter-spacing: -0.5px;
  font-size: var(--type-display-sm-size); line-height: 1.3; color: var(--color-on-dark);
  margin: 0 0 var(--space-lg);
}
.quote-band span { font-size: 14px; color: var(--color-muted); letter-spacing: .5px; }

.cta-band {
  padding: 96px 0; text-align: center; background: var(--color-carbon-gray);
  position: relative; overflow: hidden;
}
.cta-band .hero-inner { margin: 0 auto; text-align: center; z-index: 1; position: relative; }
.cta-band h2 {
  font-family: var(--font-display); font-weight: 700; text-transform: uppercase;
  letter-spacing: -0.5px; font-size: var(--type-display-md-size); color: var(--color-on-dark);
  margin: 0 0 var(--space-lg);
}

/* ---- footer ---- */
.site-footer { background: var(--color-canvas); color: var(--color-body); padding: 64px 0 40px; }
.footer-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-lg); }
@media (max-width: 768px) { .footer-grid { grid-template-columns: repeat(2, 1fr); } }
.footer-grid h4 {
  color: var(--color-on-dark); font-family: var(--font-display); font-size: 14px;
  font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase; margin: 0 0 var(--space-md);
}
.footer-grid ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: var(--space-sm); }
.footer-grid a { color: var(--color-muted); text-decoration: none; font-size: 14px; font-weight: 300; }
.footer-grid a:hover { color: var(--color-on-dark); }
.footer-bottom {
  margin-top: var(--space-xxl); padding-top: var(--space-lg); border-top: 1px solid var(--color-hairline);
  display: flex; justify-content: space-between; gap: var(--space-lg); flex-wrap: wrap;
  color: var(--color-muted); font-size: 12px; letter-spacing: .5px;
}

/* ---- forms ---- */
.field { display: flex; flex-direction: column; gap: 8px; }
.field label {
  color: var(--color-body); font-family: var(--font-display); font-size: 14px;
  font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase;
}
.field input, .field textarea, .field select {
  height: 48px; padding: 0 16px; background: var(--color-surface-card); color: var(--color-on-dark);
  border: 1px solid var(--color-hairline); border-radius: var(--radius-none);
  font-family: var(--font-body); font-size: var(--type-body-md-size); font-weight: 300; outline: none;
  transition: border-color .18s ease;
}
.field textarea { height: 140px; padding: 14px 16px; resize: vertical; }
.field select {
  appearance: none; -webkit-appearance: none; cursor: pointer; padding-right: 44px;
  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='none' stroke='%23bbbbbb' stroke-width='1.6' d='M1 1.5 6 6.5 11 1.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 16px center;
}
.field select:invalid { color: var(--color-muted); }
.field select option { color: #111; }
.field input:focus, .field textarea:focus, .field select:focus { border-color: var(--color-on-dark); }

/* ---- category tabs (blog) ---- */
.tabs { display: flex; gap: var(--space-xl); border-bottom: 1px solid var(--color-hairline); margin-bottom: var(--space-xl); flex-wrap: wrap; }
.tab {
  background: none; border: none; padding: 12px 0; cursor: pointer;
  color: var(--color-body); font-family: var(--font-display); font-size: 14px;
  font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase; position: relative;
}
.tab:hover, .tab.active { color: var(--color-on-dark); }
.tab.active::after { content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 2px; background: var(--color-on-dark); }

.article-card { border: 1px solid var(--color-hairline); border-radius: var(--radius-none); display: flex; flex-direction: column; transition: border-color .18s ease; }
.article-card:hover { border-color: var(--color-hairline-strong); }

/* ---- article thumbnail photos ----
   Each card carries a category modifier (t-tax / t-book / t-auto / t-comp)
   that sets --thumb-accent, used by the corner stripe. The photo fills the
   16:9 frame; a soft top/bottom gradient blends its edges into the dark card. */
.article-thumb {
  aspect-ratio: 16/9; position: relative; overflow: hidden;
  border-bottom: 1px solid var(--color-hairline);
  --thumb-accent: var(--color-stripe-blue-dark);
  background: var(--color-surface-soft);
}
.article-thumb.t-tax  { --thumb-accent: var(--color-stripe-red); }
.article-thumb.t-book { --thumb-accent: var(--color-stripe-blue-light); }
.article-thumb.t-auto { --thumb-accent: var(--color-stripe-blue-dark); }
.article-thumb.t-comp { --thumb-accent: var(--color-warning); }
.article-thumb img {
  position: absolute; inset: 0; z-index: 0;
  width: 100%; height: 100%; object-fit: cover; display: block;
  transition: transform .45s cubic-bezier(.2,.7,.2,1);
}
.article-card:hover .article-thumb img { transform: scale(1.05); }
.article-thumb::before {
  content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background: linear-gradient(180deg, rgba(0,0,0,.18) 0%, rgba(0,0,0,0) 38%, rgba(0,0,0,.42) 100%);
}
.article-thumb::after { content: ""; position: absolute; left: 0; top: 0; z-index: 2; width: 40px; height: 4px; background: var(--thumb-accent); }

.article-card .body { padding: var(--space-lg); display: flex; flex-direction: column; gap: var(--space-sm); }
.article-card .cat { color: var(--color-body); font-family: var(--font-display); font-size: 14px; font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase; }
.article-card h3 { margin: 0; color: var(--color-on-dark); font-family: var(--font-display); font-size: var(--type-title-lg-size); font-weight: 700; }
.article-card p { margin: 0; color: var(--color-body); font-size: var(--type-body-md-size); font-weight: 300; }