/* ============================================================
   Velio Tech — Design System
   ============================================================ */

:root {
  /* Brand */
  --imperial: #03256C;
  --persian: #2541B2;
  --ocean: #1768AC;
  --sky: #06BEE1;

  /* Surfaces */
  --paper: #FFFFFF;
  --paper-2: #FFFFFF;
  --cream: #FFFFFF;
  --white: #FFFFFF;
  --card: #FFFFFF;

  /* Ink */
  --ink: #0A1530;
  --ink-2: #2A3450;
  --muted: #5B6478;
  --hairline: rgba(10, 21, 48, 0.10);
  --hairline-strong: rgba(10, 21, 48, 0.18);

  /* Radii */
  --r-xs: 10px;
  --r-sm: 14px;
  --r-md: 20px;
  --r-lg: 28px;
  --r-xl: 36px;
  --r-pill: 999px;

  /* Type */
  --sans: 'Plus Jakarta Sans', system-ui, sans-serif;
  --serif: 'Instrument Serif', Georgia, serif;
  --mono: 'JetBrains Mono', ui-monospace, monospace;

  /* Easing */
  --ease: cubic-bezier(.22, 1, .36, 1);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: var(--sans);
  background: var(--paper);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body { min-height: 100vh; }

button, input, textarea, select {
  font-family: inherit;
  color: inherit;
}

a {
  color: inherit;
  text-decoration: none;
}

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

/* ---------- Typography helpers ---------- */
.serif { font-family: var(--serif); font-style: italic; font-weight: 400; }
.mono { font-family: var(--mono); }

.eyebrow {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--persian);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--sky);
  display: inline-block;
}

h1, h2, h3, h4 {
  margin: 0;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.05;
  color: var(--imperial);
  text-wrap: balance;
}

h1 { font-size: clamp(44px, 6vw, 84px); }
h2 { font-size: clamp(34px, 4.4vw, 60px); }
h3 { font-size: clamp(22px, 2.4vw, 30px); letter-spacing: -0.015em; }
h4 { font-size: 18px; letter-spacing: -0.01em; }

p { margin: 0; line-height: 1.55; color: var(--ink-2); }

/* ---------- Layout ---------- */
.shell {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 40px;
}
@media (max-width: 720px) {
  .shell { padding: 0 22px; }
}

section { padding: 110px 0; }
@media (max-width: 720px) {
  section { padding: 70px 0; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  height: 60px;
  padding: 0 28px;
  border-radius: var(--r-pill);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.005em;
  border: none;
  cursor: pointer;
  transition: transform .25s var(--ease), background .25s var(--ease), box-shadow .25s var(--ease);
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--imperial);
  color: #fff;
  box-shadow: 0 14px 30px -16px rgba(3, 37, 108, 0.55);
}
.btn-primary:hover {
  background: var(--persian);
  box-shadow: 0 20px 38px -18px rgba(37, 65, 178, 0.65);
}

.btn-sky {
  background: var(--sky);
  color: var(--imperial);
  box-shadow: 0 14px 28px -14px rgba(6, 190, 225, 0.6);
}
.btn-sky:hover {
  background: #1ad1f2;
  box-shadow: 0 20px 38px -16px rgba(6, 190, 225, 0.75);
}

.btn-ghost {
  background: transparent;
  color: var(--imperial);
  border: 1.5px solid var(--hairline-strong);
}
.btn-ghost:hover {
  border-color: var(--imperial);
  background: rgba(3, 37, 108, 0.04);
}

.btn-wa {
  background: #1FAD5C;
  color: #fff;
  box-shadow: 0 16px 32px -16px rgba(31, 173, 92, 0.6);
}
.btn-wa:hover { background: #15974f; }

.btn-lg { height: 68px; font-size: 18px; padding: 0 34px; }

/* ---------- Nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: saturate(1.6) blur(14px);
  -webkit-backdrop-filter: saturate(1.6) blur(14px);
  border-bottom: 1px solid var(--hairline);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 92px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
}
.nav-logo img { height: 56px; width: auto; display: block; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
}
.nav-links button {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 15.5px;
  font-weight: 500;
  color: var(--ink-2);
  padding: 10px 16px;
  border-radius: var(--r-pill);
  transition: background .2s var(--ease), color .2s var(--ease);
}
.nav-links button:hover { color: var(--imperial); background: rgba(3, 37, 108, 0.06); }
.nav-links button.active {
  color: var(--imperial);
  background: rgba(3, 37, 108, 0.08);
}

.nav-cta { display: flex; gap: 10px; align-items: center; }
.nav-cta .btn { height: 48px; font-size: 14.5px; padding: 0 20px; }

.nav-toggle {
  display: none;
  background: none;
  border: 1.5px solid var(--hairline-strong);
  width: 48px;
  height: 48px;
  border-radius: var(--r-pill);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}
@media (max-width: 980px) {
  .nav-links { display: none; }
  .nav-cta .nav-cta-text { display: none; }
}
@media (max-width: 720px) {
  .nav-toggle { display: flex; }
  .nav-cta { display: none; }
}

.mobile-menu {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 16px 22px 22px;
  background: var(--paper);
  border-bottom: 1px solid var(--hairline);
}
.mobile-menu.open { display: flex; }
.mobile-menu button {
  background: none;
  border: none;
  text-align: left;
  padding: 14px 4px;
  font-size: 18px;
  font-weight: 500;
  color: var(--ink);
  cursor: pointer;
  border-bottom: 1px solid var(--hairline);
}

/* ---------- Cards ---------- */
.card {
  background: var(--card);
  border-radius: var(--r-lg);
  padding: 32px;
  border: 1px solid var(--hairline);
}
.card-soft {
  background: var(--card);
  border-radius: var(--r-lg);
  padding: 28px;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease);
}
.card-soft:hover {
  transform: translateY(-3px);
  box-shadow: 0 30px 60px -36px rgba(3, 37, 108, 0.28);
}

/* ---------- Icon box ---------- */
.icon-box {
  width: 56px;
  height: 56px;
  border-radius: 18px;
  background: rgba(6, 190, 225, 0.12);
  color: var(--imperial);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.icon-box.dark {
  background: var(--imperial);
  color: var(--sky);
}

/* ---------- Footer ---------- */
.footer {
  background: var(--imperial);
  color: #DCE6FF;
  padding: 80px 0 36px;
}
.footer h4 { color: #fff; }
.footer a { color: #DCE6FF; }
.footer a:hover { color: #fff; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1.2fr;
  gap: 60px;
}
@media (max-width: 860px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
}
@media (max-width: 520px) {
  .footer-grid { grid-template-columns: 1fr; }
}

.footer-col-label {
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #7E94CC;
  margin-bottom: 18px;
  font-weight: 600;
}
.footer ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.footer ul li { font-size: 15px; }
.footer-bottom {
  margin-top: 60px;
  padding-top: 26px;
  border-top: 1px solid rgba(255,255,255, 0.12);
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  color: #7E94CC;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- Utility ---------- */
.row { display: flex; }
.col { display: flex; flex-direction: column; }
.center { align-items: center; justify-content: center; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.gap-20 { gap: 20px; }
.gap-24 { gap: 24px; }
.gap-32 { gap: 32px; }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 32px;
  padding: 0 14px;
  border-radius: var(--r-pill);
  font-size: 13px;
  font-weight: 600;
  background: rgba(3, 37, 108, 0.07);
  color: var(--imperial);
}
.tag-sky { background: rgba(6, 190, 225, 0.16); color: var(--ocean); }
.tag-cream { background: var(--cream); color: var(--imperial); }

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--sky);
  display: inline-block;
}

/* ---------- Page transition ---------- */
.page-enter {
  animation: pageFade .5s var(--ease);
}
@keyframes pageFade {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- Focus visible ---------- */
button:focus-visible, a:focus-visible {
  outline: 3px solid var(--sky);
  outline-offset: 3px;
  border-radius: 6px;
}

/* ---------- Selection ---------- */
::selection { background: var(--sky); color: var(--imperial); }