/* Presentation marketing page — navy / teal brand */

:root {
  --pres-bg: #0a1628;
  --pres-bg2: #0B1B2B;
  --pres-teal: #00C2B2;
  --pres-blue: #2B6CB0;
  --pres-text: #f4f7fb;
  --pres-muted: #9db0c7;
  --pres-border: rgba(0, 194, 178, 0.18);
  --pres-font: "Space Grotesk", system-ui, sans-serif;
  --pres-body: "Sora", system-ui, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body.pres-body {
  margin: 0;
  font-family: var(--pres-body);
  color: var(--pres-text);
  background: var(--pres-bg);
  line-height: 1.55;
}

.pres-bg {
  position: fixed; inset: 0; z-index: -1; overflow: hidden;
  background:
    radial-gradient(1000px 500px at 0% 0%, rgba(0,194,178,0.14), transparent 55%),
    radial-gradient(800px 400px at 100% 0%, rgba(43,108,176,0.2), transparent 50%),
    linear-gradient(180deg, var(--pres-bg), var(--pres-bg2));
}
.pres-orb {
  position: absolute; border-radius: 50%; filter: blur(70px); opacity: 0.4;
  animation: pres-float 16s ease-in-out infinite;
}
.pres-orb.a { width: 380px; height: 380px; background: var(--pres-teal); top: -60px; left: -40px; }
.pres-orb.b { width: 320px; height: 320px; background: var(--pres-blue); right: -30px; bottom: 20%; animation-delay: -5s; }
.pres-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at center, #000 15%, transparent 70%);
}
@keyframes pres-float {
  0%, 100% { transform: translate(0,0); }
  50% { transform: translate(20px, 14px); }
}

.pres-nav {
  position: sticky; top: 0; z-index: 30;
  display: flex; align-items: center; gap: 1rem; flex-wrap: wrap;
  padding: 0.85rem clamp(1rem, 4vw, 2rem);
  backdrop-filter: blur(12px);
  background: rgba(10, 22, 40, 0.82);
  border-bottom: 1px solid var(--pres-border);
}
.pres-brand {
  display: flex; align-items: center; gap: 0.6rem;
  color: var(--pres-text); text-decoration: none;
  font-family: var(--pres-font); font-weight: 600;
}
.pres-brand img { height: 34px; width: auto; }
.pres-brand .pres-nav-mark {
  height: 34px;
  width: 34px;
  object-fit: contain;
  border-radius: 8px;
}
.pres-nav nav {
  display: flex; flex-wrap: wrap; gap: 0.85rem; margin-left: auto;
}
.pres-nav nav a { color: var(--pres-muted); text-decoration: none; font-size: 0.9rem; }
.pres-nav nav a:hover { color: var(--pres-teal); }
.pres-lang {
  display: inline-flex; border: 1px solid var(--pres-border); border-radius: 999px; overflow: hidden;
}
.pres-lang button {
  border: 0; background: transparent; color: var(--pres-muted);
  padding: 0.3rem 0.6rem; font-size: 0.75rem; font-weight: 600; cursor: pointer; font-family: inherit;
}
.pres-lang button.is-active { background: var(--pres-teal); color: #04201c; }
.pres-cta {
  padding: 0.45rem 0.9rem; border-radius: 999px;
  background: rgba(0,194,178,0.14); color: var(--pres-teal);
  text-decoration: none; border: 1px solid rgba(0,194,178,0.35); font-size: 0.85rem; font-weight: 600;
}

main { max-width: 1080px; margin: 0 auto; padding: 0 clamp(1rem, 4vw, 2rem) 3rem; }

.pres-hero {
  display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 2rem;
  align-items: center; padding: 3.25rem 0 2.5rem; min-height: min(72vh, 640px);
}
@media (max-width: 860px) {
  .pres-hero { grid-template-columns: 1fr; min-height: auto; }
  .pres-nav nav { display: none; }
}

.pres-kicker {
  color: var(--pres-teal); font-size: 0.8rem; font-weight: 600;
  letter-spacing: 0.12em; text-transform: uppercase; margin: 0 0 0.7rem;
}
.pres-hero h1 {
  font-family: var(--pres-font); font-size: clamp(2.1rem, 5vw, 3.2rem);
  margin: 0 0 0.9rem; letter-spacing: -0.03em; line-height: 1.1;
}
.pres-lead { color: var(--pres-muted); font-size: 1.08rem; max-width: 34rem; margin: 0 0 1.4rem; }
.pres-hero-actions { display: flex; flex-wrap: wrap; gap: 0.7rem; }

.pres-btn {
  display: inline-flex; align-items: center; gap: 0.4rem;
  padding: 0.7rem 1.15rem; border-radius: 10px; text-decoration: none;
  font-family: var(--pres-font); font-weight: 600; font-size: 0.95rem;
  border: 1px solid transparent; transition: transform 0.15s;
}
.pres-btn:hover { transform: translateY(-1px); }
.pres-btn.primary {
  background: linear-gradient(135deg, var(--pres-teal), #009e92); color: #04201c;
  box-shadow: 0 8px 28px rgba(0,194,178,0.28);
}
.pres-btn.ghost { color: var(--pres-text); border-color: var(--pres-border); }
.pres-btn.lg { padding: 0.9rem 1.4rem; font-size: 1.05rem; }

.pres-hero-visual {
  display: flex; flex-direction: column; align-items: center; gap: 1.25rem;
  animation: pres-rise 0.9s ease-out both;
}
@keyframes pres-rise {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: none; }
}
.pres-logo-full {
  width: min(100%, 420px); height: auto;
  filter: drop-shadow(0 12px 40px rgba(0,194,178,0.2));
}
.pres-logo-mark {
  width: 96px; height: auto; opacity: 0.9;
  border-radius: 18px;
  border: 1px solid var(--pres-border);
}

.pres-section { padding: 3rem 0; }
.pres-section.alt {
  margin-inline: calc(-1 * clamp(1rem, 4vw, 2rem));
  padding-inline: clamp(1rem, 4vw, 2rem);
  background: rgba(0,0,0,0.18);
  border-block: 1px solid var(--pres-border);
}
.pres-head { margin-bottom: 1.5rem; max-width: 40rem; }
.pres-head h2 {
  font-family: var(--pres-font); font-size: clamp(1.45rem, 3vw, 1.9rem);
  margin: 0 0 0.4rem; letter-spacing: -0.02em;
}
.pres-head p { margin: 0; color: var(--pres-muted); }

.pres-prose p { color: var(--pres-muted); max-width: 48rem; }
.pres-audience {
  list-style: none; padding: 0; display: flex; flex-wrap: wrap; gap: 0.6rem; margin: 1.25rem 0 0;
}
.pres-audience li {
  padding: 0.5rem 0.85rem; border-radius: 999px;
  border: 1px solid var(--pres-border); background: rgba(0,194,178,0.08);
  font-size: 0.88rem; color: var(--pres-teal);
}

.pres-value-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 1rem;
}
.pres-value-grid article {
  padding: 1.2rem; border-radius: 14px; border: 1px solid var(--pres-border);
  background: rgba(15, 32, 54, 0.72);
}
.pres-value-grid i { font-size: 1.35rem; color: var(--pres-teal); }
.pres-value-grid h3 { font-family: var(--pres-font); font-size: 1.05rem; margin: 0.6rem 0 0.35rem; }
.pres-value-grid p { margin: 0; color: var(--pres-muted); font-size: 0.9rem; }

.pres-arch {
  display: flex; flex-direction: column; align-items: center; gap: 0.75rem;
  margin-bottom: 1.5rem;
}
.pres-arch-node {
  min-width: min(100%, 320px); text-align: center;
  padding: 1rem 1.25rem; border-radius: 12px;
  border: 1px solid var(--pres-border); background: rgba(15,32,54,0.8);
}
.pres-arch-node span { display: block; font-family: var(--pres-font); font-weight: 600; }
.pres-arch-node small { color: var(--pres-muted); font-size: 0.8rem; }
.pres-arch-node.client { border-color: rgba(0,194,178,0.45); }
.pres-arch-node.api { border-color: rgba(43,108,176,0.55); }
.pres-arch-arrow { color: var(--pres-teal); font-size: 0.85rem; font-weight: 600; }
.pres-arch-row {
  display: flex; flex-wrap: wrap; gap: 0.75rem; justify-content: center; width: 100%;
}
.pres-arch-row .pres-arch-node { min-width: 160px; flex: 1 1 160px; max-width: 240px; }

.pres-table {
  width: 100%; border-collapse: collapse; font-size: 0.92rem;
}
.pres-table th, .pres-table td {
  text-align: left; padding: 0.65rem 0.75rem;
  border-bottom: 1px solid var(--pres-border);
}
.pres-table th { color: var(--pres-teal); font-weight: 600; }
.pres-table code { color: var(--pres-teal); }

.pres-feat-cols {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem;
}
@media (max-width: 800px) { .pres-feat-cols { grid-template-columns: 1fr; } }
.pres-feat-cols h3 {
  font-family: var(--pres-font); font-size: 1.05rem; margin: 0 0 0.75rem;
  display: flex; align-items: center; gap: 0.4rem;
}
.pres-feat-cols h3 i { color: var(--pres-teal); }
.pres-feat-cols ul { list-style: none; padding: 0; margin: 0; }
.pres-feat-cols li {
  display: flex; gap: 0.45rem; align-items: flex-start;
  padding: 0.4rem 0; font-size: 0.88rem; color: var(--pres-muted);
  border-bottom: 1px solid rgba(255,255,255,0.04);
}
.pres-feat-cols li i { color: var(--pres-teal); margin-top: 0.15rem; }

.pres-urls {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 0.85rem;
}
.pres-urls a {
  display: flex; flex-direction: column; gap: 0.25rem;
  padding: 1.1rem 1.2rem; border-radius: 12px; text-decoration: none;
  border: 1px solid var(--pres-border); background: rgba(15,32,54,0.75);
  color: var(--pres-text); transition: border-color 0.2s;
}
.pres-urls a:hover { border-color: var(--pres-teal); }
.pres-urls strong { font-family: var(--pres-font); color: var(--pres-teal); }
.pres-urls span { font-size: 0.8rem; color: var(--pres-muted); }

.pres-cta-block { text-align: center; margin-top: 2rem; }

.pres-footer {
  border-top: 1px solid var(--pres-border);
  padding: 1.5rem clamp(1rem, 4vw, 2rem);
  display: flex; align-items: center; gap: 0.75rem; flex-wrap: wrap;
  color: var(--pres-muted); font-size: 0.85rem;
  max-width: 1080px; margin: 0 auto;
}
.pres-footer img { height: 28px; }
.pres-footer a { color: var(--pres-teal); }
.pres-footer p { margin: 0; }