/* ==========================================================================
   Katari Studios — Marketing Site
   Palette derived from the Katari brand system:
   seafoam #2ECCB0, baby blue #A7D8FF, deep surfaces #0D1114 / #121417
   ========================================================================== */

:root {
  --seafoam: #2ECCB0;
  --seafoam-dark: #2FA489;
  --blue: #A7D8FF;
  --blue-dark: #55B8E6;
  --surface: #0D1114;
  --surface-elevated: #121417;
  --surface-hover: #1A1D21;
  --text: #E6EEF5;
  --text-secondary: #A9B6C2;
  --text-muted: #596770;
  --border: #1E2328;

  --font-display: "Sora", system-ui, sans-serif;
  --font-body: "Inter", system-ui, sans-serif;

  --container: 1120px;
  --radius: 14px;
  --header-h: 68px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--surface);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; }

a { color: var(--blue); text-decoration: none; }
a:hover { color: var(--blue-dark); }

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

/* ---------- Typography ---------- */

h1, h2, h3, h4 {
  font-family: var(--font-display);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.4rem, 6vw, 4.2rem); font-weight: 800; }
h2 { font-size: clamp(1.8rem, 4vw, 2.6rem); font-weight: 700; }
h3 { font-size: 1.25rem; font-weight: 600; }

.accent {
  background: linear-gradient(90deg, var(--seafoam), var(--blue));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.eyebrow {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--seafoam);
  margin-bottom: 14px;
}

.lead {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 56ch;
}

/* ---------- Accessibility ---------- */

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--seafoam);
  color: var(--surface);
  padding: 10px 18px;
  border-radius: 0 0 8px 0;
  z-index: 200;
  font-weight: 600;
}
.skip-link:focus { left: 0; }

:focus-visible {
  outline: 2px solid var(--seafoam);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- Header / Nav ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--surface) 82%, transparent);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text);
}
.nav-logo:hover { color: var(--text); }
.nav-logo em {
  font-style: normal;
  color: var(--seafoam);
}

.logo-mark {
  width: 26px;
  height: 26px;
  color: var(--seafoam);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-menu a {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.2s;
}
.nav-menu a:hover { color: var(--text); }

.nav-cta {
  padding: 9px 18px;
  border: 1px solid var(--seafoam);
  border-radius: 999px;
  color: var(--seafoam) !important;
  transition: background 0.2s, color 0.2s;
}
.nav-cta:hover {
  background: var(--seafoam);
  color: var(--surface) !important;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.25s, opacity 0.25s;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Buttons ---------- */

.btn {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 13px 28px;
  border-radius: 999px;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s, color 0.2s;
}

.btn-primary {
  background: var(--seafoam);
  color: var(--surface);
}
.btn-primary:hover {
  background: var(--seafoam-dark);
  color: var(--surface);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px color-mix(in srgb, var(--seafoam) 35%, transparent);
}

.btn-ghost {
  border: 1px solid var(--border);
  color: var(--text);
}
.btn-ghost:hover {
  border-color: var(--blue);
  color: var(--blue);
  transform: translateY(-2px);
}

.btn-lg { padding: 16px 36px; font-size: 1.05rem; }

/* ---------- Hero ---------- */

.hero {
  position: relative;
  padding: 130px 0 80px;
  overflow: hidden;
  text-align: center;
}

.hero-glow {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 60% 45% at 50% -5%, color-mix(in srgb, var(--seafoam) 16%, transparent), transparent 70%),
    radial-gradient(ellipse 45% 35% at 80% 15%, color-mix(in srgb, var(--blue) 8%, transparent), transparent 70%);
}

.hero-inner { position: relative; }

.hero-sub {
  margin: 26px auto 0;
  max-width: 60ch;
  font-size: 1.15rem;
  color: var(--text-secondary);
}

.hero-actions {
  margin-top: 38px;
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-marquee {
  margin-top: 90px;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 18px 0;
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}

.marquee-track {
  display: flex;
  gap: 42px;
  width: max-content;
  animation: marquee 26s linear infinite;
  animation-play-state: var(--marquee-state, running);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  color: var(--text-muted);
  white-space: nowrap;
}

@keyframes marquee {
  to { transform: translateX(-50%); }
}

/* ---------- Sections ---------- */

.section { padding: 110px 0; }
.section-alt {
  background: var(--surface-elevated);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-head { margin-bottom: 56px; }
.section-head .lead { margin-top: 16px; }

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 60px;
  align-items: start;
}

/* ---------- Stats ---------- */

.stats {
  display: flex;
  gap: 48px;
  margin-top: 42px;
  flex-wrap: wrap;
}

.stat { display: flex; flex-direction: column; }

.stat-num {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--seafoam);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ---------- Venture cards ---------- */

.cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.card,
.step {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 34px;
}

.card {
  background: var(--surface);
  display: flex;
  flex-direction: column;
  transition: transform 0.25s, border-color 0.25s, background 0.25s;
}

.card:hover {
  transform: translateY(-4px);
  border-color: color-mix(in srgb, var(--seafoam) 45%, transparent);
  background: var(--surface-hover);
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  margin-bottom: 22px;
}
.card-icon svg { width: 24px; height: 24px; }

.card-icon--seafoam {
  background: color-mix(in srgb, var(--seafoam) 12%, transparent);
  color: var(--seafoam);
}
.card-icon--blue {
  background: color-mix(in srgb, var(--blue) 12%, transparent);
  color: var(--blue);
}

.card-tag {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin: 6px 0 14px;
}

.card p { color: var(--text-secondary); }

.card-link {
  margin-top: auto;
  padding-top: 22px;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--seafoam);
}
.card-link:hover { color: var(--seafoam-dark); }

/* ---------- Approach steps ---------- */

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  list-style: none;
}

.step {
  background: var(--surface-elevated);
}

.step-num {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--blue);
  letter-spacing: 0.1em;
}

.step h3 { margin: 14px 0 10px; }
.step p { color: var(--text-secondary); font-size: 0.97rem; }

/* ---------- Contact ---------- */

.contact-inner {
  text-align: center;
  max-width: 640px;
}
.contact-inner .lead { margin: 18px auto 36px; }

/* ---------- Footer ---------- */

.site-footer {
  padding: 70px 0 30px;
  border-top: 1px solid var(--border);
}

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
}

.footer-brand p {
  margin-top: 16px;
  color: var(--text-muted);
  font-size: 0.92rem;
  max-width: 32ch;
}

.footer-links { display: flex; flex-direction: column; gap: 10px; }

.footer-links h4 {
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.95rem;
}
.footer-links a:hover { color: var(--text); }

.footer-legal {
  margin-top: 56px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* ---------- Reveal animations ---------- */

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible { opacity: 1; transform: none; }
.delay-1 { transition-delay: 0.12s; }
.delay-2 { transition-delay: 0.24s; }
.delay-3 { transition-delay: 0.36s; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .marquee-track { animation: none; }
}

/* ---------- Responsive ---------- */

@media (max-width: 900px) {
  .grid-2 { grid-template-columns: 1fr; gap: 32px; }
  .steps { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 720px) {
  .section { padding: 80px 0; }
  .hero { padding: 90px 0 50px; }
  .cards { grid-template-columns: 1fr; }

  .nav-toggle { display: flex; }

  .nav-menu {
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--surface-elevated);
    border-bottom: 1px solid var(--border);
    padding: 12px 24px 20px;
    display: none;
  }
  .nav-menu.open { display: flex; }
  .nav-menu li { padding: 10px 0; }
  .nav-cta { display: inline-block; text-align: center; margin-top: 8px; }
}

@media (max-width: 520px) {
  .footer-inner { grid-template-columns: 1fr; }
}