:root {
  /* ----- Light theme (default) ----- */
  --bg: #f3f6fb;
  --bg-2: #e3ecfb;
  --ink: #121a34;
  --ink-soft: #45506b;
  --ink-dim: #6c7691;
  --accent: #0e8a80;

  --teal: #35e0c8;
  --blue: #3d8bff;
  --violet: #6b74ff;

  --glass-bg: rgba(255, 255, 255, 0.55);
  --glass-brd: rgba(255, 255, 255, 0.75);
  --glass-hi: rgba(255, 255, 255, 0.95);
  --shadow: 0 22px 50px rgba(31, 52, 92, 0.14);

  --title-grad: linear-gradient(180deg, #10173a 18%, #2f63cf 100%);
  --hero-overlay: linear-gradient(to bottom,
      rgba(255, 255, 255, 0.28) 0%,
      rgba(255, 255, 255, 0.18) 35%,
      rgba(243, 246, 251, 0.72) 82%,
      var(--bg) 100%);
  --orb-opacity: 0.42;

  --dock-bg: rgba(255, 255, 255, 0.6);
  --dock-shadow: 0 24px 55px rgba(31, 52, 92, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.95);
  --dock-sheen: linear-gradient(140deg, rgba(255, 255, 255, 0.7), rgba(255, 255, 255, 0) 45%);
  --dock-active-ink: #06373f;
  --tooltip-bg: rgba(255, 255, 255, 0.92);

  --surface-soft: rgba(255, 255, 255, 0.5);
  --surface-soft-hover: rgba(255, 255, 255, 0.82);
  --card-hover-shadow: 0 30px 60px rgba(31, 52, 92, 0.18);
  --ghost-hover: rgba(255, 255, 255, 0.85);

  --radius: 22px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --maxw: 1160px;
}

[data-theme="dark"] {
  /* ----- Dark theme ----- */
  --bg: #05080f;
  --bg-2: #0a1424;
  --ink: #eaf2ff;
  --ink-soft: #a9bad3;
  --ink-dim: #6f83a0;
  --accent: #35e0c8;

  --glass-bg: rgba(255, 255, 255, 0.06);
  --glass-brd: rgba(255, 255, 255, 0.14);
  --glass-hi: rgba(255, 255, 255, 0.28);
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.45);

  --title-grad: linear-gradient(180deg, #ffffff 30%, #a9c6ff 100%);
  --hero-overlay: linear-gradient(to bottom,
      rgba(5, 8, 15, 0.55) 0%,
      rgba(5, 8, 15, 0.45) 35%,
      rgba(5, 8, 15, 0.75) 80%,
      var(--bg) 100%);
  --orb-opacity: 0.5;

  --dock-bg: rgba(255, 255, 255, 0.08);
  --dock-shadow: 0 24px 60px rgba(0, 0, 0, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.35), inset 0 -1px 1px rgba(255, 255, 255, 0.06);
  --dock-sheen: linear-gradient(140deg, rgba(255, 255, 255, 0.22), rgba(255, 255, 255, 0) 42%);
  --dock-active-ink: #eafffb;
  --tooltip-bg: rgba(10, 16, 28, 0.7);

  --surface-soft: rgba(255, 255, 255, 0.04);
  --surface-soft-hover: rgba(255, 255, 255, 0.08);
  --card-hover-shadow: 0 30px 70px rgba(0, 0, 0, 0.5);
  --ghost-hover: rgba(255, 255, 255, 0.1);
}

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

html { scroll-behavior: smooth; scroll-padding-top: 28px; scroll-padding-bottom: 110px; }

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: radial-gradient(120% 120% at 50% 0%, var(--bg-2) 0%, var(--bg) 55%);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.45s var(--ease), color 0.45s var(--ease);
}

a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { line-height: 1.08; letter-spacing: -0.02em; font-weight: 700; }

/* ---------- Aurora background ---------- */
.bg-aurora {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
}
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: var(--orb-opacity);
  will-change: transform;
}
.orb-1 { width: 640px; height: 640px; top: -180px; left: -120px; background: radial-gradient(circle, var(--blue), transparent 65%); }
.orb-2 { width: 560px; height: 560px; top: 30%; right: -160px; background: radial-gradient(circle, var(--teal), transparent 65%); }
.orb-3 { width: 620px; height: 620px; bottom: -220px; left: 25%; background: radial-gradient(circle, var(--violet), transparent 65%); }

/* ---------- Glass primitive ---------- */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  border: 1px solid var(--glass-brd);
  box-shadow: var(--shadow), inset 0 1px 0 var(--glass-hi);
}

/* ---------- Brand chip (top-left) ---------- */
.brand-chip {
  position: absolute;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  display: flex;
  align-items: center;
  padding: 11px 24px;
  border-radius: 999px;
  transition: transform 0.35s var(--ease), background 0.35s var(--ease);
}
.brand-chip:hover { transform: translateX(-50%) translateY(-2px); }

.logo { display: block; width: auto; }
.logo-chip { height: 30px; }
.logo-footer { height: 42px; margin-bottom: 6px; }

/* Logo swaps with theme: navy artwork on light, white on dark */
.logo-on-dark { display: none; }
[data-theme="dark"] .logo-on-dark { display: block; }
[data-theme="dark"] .logo-on-light { display: none; }

/* ---------- Theme toggle ---------- */
.theme-toggle {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 101;
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 999px;
  cursor: pointer;
  color: var(--ink);
  transition: transform 0.4s var(--ease), background-color 0.4s var(--ease);
}
.theme-toggle:hover { transform: translateY(-2px) rotate(-15deg); }
.theme-toggle svg { width: 20px; height: 20px; }
.theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun { display: block; }
[data-theme="dark"] .theme-toggle .icon-moon { display: none; }

/* ---------- Bottom dock (liquid glass) ---------- */
.dock {
  position: fixed;
  left: 0; right: 0;
  bottom: max(22px, env(safe-area-inset-bottom));
  z-index: 100;
  display: flex;
  justify-content: center;
  padding: 0 20px;
  pointer-events: none;
}
.dock-inner {
  position: relative;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px;
  border-radius: 999px;
  pointer-events: auto;
  background: var(--dock-bg);
  backdrop-filter: blur(26px) saturate(180%);
  -webkit-backdrop-filter: blur(26px) saturate(180%);
  box-shadow: var(--dock-shadow);
  border: 1px solid var(--glass-brd);
  overflow: hidden;
  transition: background-color 0.45s var(--ease), box-shadow 0.45s var(--ease);
}
/* specular sheen across the glass */
.dock-inner::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: var(--dock-sheen);
  pointer-events: none;
}

.dock-highlight {
  position: absolute;
  top: 10px;
  left: 0;
  width: 52px;
  height: calc(100% - 20px);
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(53, 224, 200, 0.28), rgba(61, 139, 255, 0.28));
  border: 1px solid rgba(255, 255, 255, 0.25);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.4);
  transform: translateX(0);
  transition: transform 0.55s var(--ease), width 0.4s var(--ease), opacity 0.3s;
  pointer-events: none;
}

.dock-item {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border-radius: 999px;
  color: var(--ink-soft);
  transition: color 0.3s var(--ease), transform 0.3s var(--ease);
}
.dock-item svg { width: 24px; height: 24px; transition: transform 0.3s var(--ease); }
.dock-item:hover { color: var(--ink); }
.dock-item:hover svg { transform: translateY(-2px) scale(1.08); }
.dock-item:active svg { transform: scale(0.9); }
.dock-item.active { color: var(--dock-active-ink); }
.dock-item .dock-label {
  position: absolute;
  bottom: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  padding: 5px 11px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  white-space: nowrap;
  color: var(--ink);
  background: var(--tooltip-bg);
  border: 1px solid var(--glass-brd);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s var(--ease), transform 0.25s var(--ease);
}
.dock-item:hover .dock-label { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 26px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), background 0.3s var(--ease);
  will-change: transform;
}
.btn-primary {
  color: #04121a;
  background: linear-gradient(135deg, var(--teal), var(--blue));
  box-shadow: 0 10px 30px rgba(53, 224, 200, 0.28);
}
.btn-primary:hover { transform: translateY(-2px) scale(1.02); box-shadow: 0 16px 40px rgba(53, 224, 200, 0.4); }
.btn-ghost {
  color: var(--ink);
  background: var(--glass-bg);
  border: 1px solid var(--glass-brd);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.btn-ghost:hover { transform: translateY(-2px); background: var(--ghost-hover); }
.btn-lg { padding: 15px 34px; font-size: 1.02rem; }
.nav-cta { padding: 10px 22px; }

/* ---------- Layout ---------- */
.section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 120px 24px;
}
.section-head { text-align: center; max-width: 640px; margin: 0 auto 60px; }
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.22em;
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 14px;
}
.section-head h2 { font-size: clamp(2rem, 4.5vw, 3.1rem); margin-bottom: 16px; }
.section-lead { color: var(--ink-soft); font-size: 1.08rem; }

/* ---------- Hero ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 140px 24px 80px;
  position: relative;
  isolation: isolate;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    var(--hero-overlay),
    url("assets/captec-hero-bg.jpg") center / cover no-repeat;
}
.hero-content { max-width: 820px; }
.hero-title {
  font-size: clamp(2.8rem, 9vw, 6rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  background: var(--title-grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 22px;
}
.hero-sub { font-size: clamp(1.05rem, 2.4vw, 1.4rem); color: var(--ink-soft); max-width: 620px; margin: 0 auto 36px; }
.hero-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.scroll-hint { position: absolute; bottom: 34px; left: 50%; transform: translateX(-50%); }
.scroll-hint span {
  display: block;
  width: 24px; height: 40px;
  border: 2px solid var(--glass-brd);
  border-radius: 14px;
  position: relative;
}
.scroll-hint span::after {
  content: "";
  position: absolute;
  top: 8px; left: 50%;
  width: 4px; height: 8px;
  margin-left: -2px;
  background: var(--accent);
  border-radius: 2px;
  animation: scrollDot 1.8s infinite;
}
@keyframes scrollDot { 0% { opacity: 0; transform: translateY(0); } 40% { opacity: 1; } 80% { opacity: 0; transform: translateY(12px); } 100% { opacity: 0; } }

/* ---------- Cards ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
  perspective: 1200px;
}
.card {
  padding: 34px 30px;
  border-radius: var(--radius);
  transition: transform 0.5s var(--ease), box-shadow 0.5s var(--ease), border-color 0.5s var(--ease);
  will-change: transform;
}
.card:hover {
  transform: translateY(-6px);
  border-color: var(--glass-hi);
  box-shadow: var(--card-hover-shadow), inset 0 1px 0 var(--glass-hi);
}
.card-icon {
  display: grid;
  place-items: center;
  width: 54px; height: 54px;
  border-radius: 16px;
  font-size: 1.5rem;
  margin-bottom: 20px;
  background: linear-gradient(135deg, rgba(53, 224, 200, 0.2), rgba(61, 139, 255, 0.2));
  border: 1px solid var(--glass-brd);
  color: var(--accent);
}
.card h3 { font-size: 1.28rem; margin-bottom: 12px; }
.card p { color: var(--ink-soft); margin-bottom: 18px; }
.card-list { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.card-list li { color: var(--ink-dim); font-size: 0.92rem; padding-left: 20px; position: relative; }
.card-list li::before { content: "→"; position: absolute; left: 0; color: var(--accent); }

/* ---------- About ---------- */
.about-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 40px; align-items: center; }
.about-copy h2 { font-size: clamp(2rem, 4.5vw, 3rem); margin-bottom: 18px; }
.about-copy p { color: var(--ink-soft); font-size: 1.08rem; margin-bottom: 26px; }
.about-panel { padding: 36px; border-radius: var(--radius); display: flex; flex-direction: column; gap: 26px; }
.stat { display: flex; flex-direction: column; }
.stat-num { font-size: 2.6rem; font-weight: 800; background: linear-gradient(135deg, var(--teal), var(--blue)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat-label { color: var(--ink-soft); font-size: 0.95rem; }

/* ---------- Goals ---------- */
.goal-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.goal { padding: 30px 26px; border-radius: var(--radius); transition: transform 0.5s var(--ease); }
.goal:hover { transform: translateY(-5px); }
.goal h3 { font-size: 1.2rem; margin-bottom: 12px; color: var(--accent); }
.goal p { color: var(--ink-soft); font-size: 0.95rem; }

/* ---------- FAQ ---------- */
.faq-list { max-width: 820px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
.faq-item { border-radius: 18px; padding: 4px 26px; overflow: hidden; }
.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 20px 0;
  font-weight: 600;
  font-size: 1.08rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--accent);
  transition: transform 0.35s var(--ease);
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p { color: var(--ink-soft); padding: 0 0 22px; max-width: 92%; }

/* ---------- CTA ---------- */
.cta-section { padding-top: 60px; }
.cta { text-align: center; padding: 60px 40px; border-radius: 32px; max-width: 900px; margin: 0 auto; }
.cta h2 { font-size: clamp(2rem, 5vw, 3.2rem); margin-bottom: 18px; }
.cta-lead { color: var(--ink-soft); font-size: 1.1rem; max-width: 560px; margin: 0 auto 36px; }
.contact-details {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-bottom: 36px;
}
.contact-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px;
  border-radius: 16px;
  background: var(--surface-soft);
  border: 1px solid var(--glass-brd);
  transition: transform 0.3s var(--ease), background 0.3s var(--ease);
}
a.contact-item:hover { transform: translateY(-3px); background: var(--surface-soft-hover); }
.contact-label { font-size: 0.74rem; text-transform: uppercase; letter-spacing: 0.14em; color: var(--ink-dim); }
.contact-value { font-weight: 600; font-size: 0.98rem; }

/* ---------- Footer ---------- */
.footer { max-width: var(--maxw); margin: 0 auto; padding: 40px 24px 130px; }
.footer-inner {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 30px;
  padding: 44px;
  border-radius: var(--radius);
}
.footer-brand p { color: var(--ink-soft); margin-top: 14px; max-width: 280px; font-size: 0.95rem; }
.footer-col h4 { font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.14em; color: var(--ink-dim); margin-bottom: 16px; }
.footer-col a, .footer-col span { display: block; color: var(--ink-soft); font-size: 0.95rem; margin-bottom: 10px; transition: color 0.25s; }
.footer-col a:hover { color: var(--accent); }
.copyright { text-align: center; color: var(--ink-dim); font-size: 0.85rem; margin-top: 26px; }

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.8s var(--ease), transform 0.8s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.reveal:nth-child(2) { transition-delay: 0.06s; }
.reveal:nth-child(3) { transition-delay: 0.12s; }
.reveal:nth-child(4) { transition-delay: 0.18s; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .cards { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .goal-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-details { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .section { padding: 90px 20px; }
}
@media (max-width: 480px) {
  .dock-item { width: 46px; height: 46px; }
  .dock-highlight { width: 46px; }
  .dock-item svg { width: 22px; height: 22px; }
  .logo-chip { height: 26px; }
  .brand-chip { padding: 10px 20px; }
}
@media (max-width: 560px) {
  .goal-grid, .contact-details, .footer-inner { grid-template-columns: 1fr; }
  .cta { padding: 44px 24px; }
}

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