/* ===== Blue Ventis — brand stylesheet ===== */
:root {
  --teal:      #159aae;
  --teal-deep: #0f7d8f;
  --slate:     #58636e;
  --slate-2:   #2d4d57;
  --grad:      linear-gradient(120deg, #159aae 0%, #0f7d8f 55%, #2d4d57 100%);
  --grad-soft: linear-gradient(120deg, #e6f4f6 0%, #f3f9fa 100%);

  --bg:      #ffffff;
  --bg-alt:  #f3f9fa;
  --surface: #ffffff;
  --border:  #dfeaec;
  --text:    #14313a;
  --muted:   #5c6b73;

  --radius:  16px;
  --maxw:    1120px;
  --ease:    cubic-bezier(.22,.61,.36,1);
  --shadow:  0 18px 40px -22px rgba(20,49,58,.28);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  line-height: 1.65; -webkit-font-smoothing: antialiased; overflow-x: hidden;
}

h1, h2, h3, .brand-name {
  font-family: "Sora", "Inter", system-ui, sans-serif;
  letter-spacing: -0.02em; line-height: 1.12; margin: 0;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

.grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.accent { color: var(--slate); }

.skip-link { position: absolute; left: -999px; top: 0; z-index: 200; background: var(--teal); color: #fff; padding: 10px 16px; border-radius: 0 0 8px 0; font-weight: 600; }
.skip-link:focus { left: 0; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 13px 27px; border-radius: 999px; font-weight: 600; font-size: 15px;
  border: 1px solid transparent; cursor: pointer;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease);
}
.btn-primary { background: var(--grad); color: #fff; box-shadow: 0 10px 26px -10px rgba(21,154,174,.7); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 34px -10px rgba(21,154,174,.85); }
.btn-outline { background: transparent; color: var(--teal-deep); border-color: var(--border); }
.btn-outline:hover { border-color: var(--teal); color: var(--teal); transform: translateY(-2px); }

/* ===== Header ===== */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  transition: background .3s var(--ease), border-color .3s var(--ease), box-shadow .3s var(--ease);
  border-bottom: 1px solid transparent;
}
.site-header.scrolled { background: rgba(255,255,255,.86); backdrop-filter: saturate(160%) blur(14px); border-bottom-color: var(--border); box-shadow: 0 6px 24px -18px rgba(20,49,58,.5); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 74px; }
.brand { display: inline-flex; align-items: center; gap: 11px; }
.brand img { border-radius: 8px; }
.brand-name { font-size: 20px; font-weight: 700; color: var(--teal); }
.brand-name .accent { color: var(--slate); }

/* Light hero: header keeps dark, legible text at top and when scrolled */
.nav { display: flex; align-items: center; gap: 28px; }
.nav a { font-size: 15px; color: var(--muted); transition: color .2s var(--ease); }
.nav a:hover { color: var(--text); }
.nav .nav-cta { color: var(--teal-deep); border: 1px solid var(--border); padding: 9px 20px; border-radius: 999px; }
.nav .nav-cta:hover { border-color: var(--teal); color: var(--teal); }

.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav-toggle span { width: 24px; height: 2px; background: var(--slate-2); border-radius: 2px; transition: transform .3s var(--ease), opacity .3s var(--ease); }
.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); }

/* ===== Hero — side-visual split ===== */
.hero {
  position: relative; overflow: hidden;
  padding: 150px 0 96px;
  background:
    radial-gradient(ellipse 70% 90% at 90% 10%, rgba(21,154,174,.10), transparent 60%),
    var(--grad-soft);
  border-bottom: 1px solid var(--border);
}
.hero-inner { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
.hero-copy { max-width: 560px; }
.eyebrow { display: inline-block; font-size: 12px; letter-spacing: .2em; text-transform: uppercase; color: var(--teal-deep); margin: 0 0 20px; font-weight: 700; }
.hero h1 { font-size: clamp(2.2rem, 4.8vw, 3.6rem); font-weight: 700; color: var(--slate-2); }
.hero-sub { font-size: clamp(1rem, 1.4vw, 1.15rem); color: var(--muted); margin: 24px 0 0; max-width: 520px; }
.hero-actions { display: flex; gap: 14px; margin-top: 34px; flex-wrap: wrap; }

/* Hero visual — concentric arcs + floating chips */
.hero-visual { display: flex; justify-content: center; }
.arc-stage { position: relative; width: min(420px, 100%); aspect-ratio: 1 / 1; }
.arc-stage .arcs { width: 100%; height: 100%; filter: drop-shadow(0 22px 44px rgba(21,154,174,.18)); }
.chip {
  position: absolute; display: inline-flex; align-items: center; gap: 8px;
  background: var(--surface); border: 1px solid var(--border); border-radius: 999px;
  padding: 9px 16px; font-family: "Sora", sans-serif; font-weight: 600; font-size: 14px;
  color: var(--slate-2); box-shadow: var(--shadow); white-space: nowrap;
}
.chip::before { content: ""; width: 9px; height: 9px; border-radius: 50%; background: var(--teal); }
.chip-vision { top: 12%; left: -6%; animation: float 6s ease-in-out infinite; }
.chip-growth { bottom: 14%; right: -4%; animation: float 6s ease-in-out infinite .8s; }
.chip-growth::before { background: var(--slate); }
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-9px); } }
@media (prefers-reduced-motion: reduce) { .chip { animation: none; } }

/* ===== Sections ===== */
.section { padding: 96px 0; }
.section-alt { background: var(--bg-alt); border-block: 1px solid var(--border); }
.kicker { font-size: 12px; letter-spacing: .16em; text-transform: uppercase; color: var(--teal); font-weight: 700; margin: 0 0 14px; }
.section-head { max-width: 680px; margin: 0 auto 56px; text-align: center; }
.section-head h2 { font-size: clamp(1.8rem, 3.6vw, 2.7rem); color: var(--slate-2); }
.section-head .lead { color: var(--muted); margin-top: 16px; font-size: 1.05rem; }

/* ===== Process timeline ===== */
.timeline {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; position: relative;
}
/* connecting line behind the nodes */
.timeline::before {
  content: ""; position: absolute; top: 22px; left: 12.5%; right: 12.5%; height: 2px;
  background: linear-gradient(90deg, var(--teal), var(--slate)); opacity: .35; z-index: 0;
}
.tl-step { position: relative; z-index: 1; text-align: center; padding: 0 6px; }
.tl-node {
  width: 46px; height: 46px; border-radius: 50%; display: grid; place-items: center; margin: 0 auto 20px;
  background: var(--grad); color: #fff; font-family: "Sora", sans-serif; font-weight: 700; font-size: 1.05rem;
  box-shadow: 0 10px 22px -10px rgba(21,154,174,.7); border: 3px solid var(--bg);
}
.tl-body h3 { font-size: 1.18rem; color: var(--slate-2); margin-bottom: 8px; }
.tl-body p { color: var(--muted); font-size: .95rem; margin: 0; }

/* ===== Icon-list features — 2-col, alternating rows ===== */
.focus-list { list-style: none; margin: 0 auto; padding: 0; max-width: 960px; display: grid; grid-template-columns: 1fr 1fr; gap: 0; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; background: var(--surface); }
.focus-row { display: flex; gap: 18px; align-items: flex-start; padding: 30px 28px; border-bottom: 1px solid var(--border); transition: background .3s var(--ease); }
.focus-row:nth-child(odd) { border-right: 1px solid var(--border); }
/* alternating subtle row backgrounds (by visual row) */
.focus-row:nth-child(3), .focus-row:nth-child(4) { background: var(--bg-alt); border-bottom: 0; }
.focus-row:hover { background: #eef6f7; }
.focus-icon { flex: 0 0 auto; width: 52px; height: 52px; border-radius: 13px; display: grid; place-items: center; background: var(--grad-soft); border: 1px solid var(--border); color: var(--teal-deep); }
.focus-icon svg { width: 26px; height: 26px; }
.focus-text h3 { font-size: 1.18rem; margin-bottom: 8px; color: var(--slate-2); }
.focus-text p { color: var(--muted); font-size: .95rem; margin: 0; }

/* ===== Principles ===== */
.principles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.principle { position: relative; padding: 34px 28px 30px; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--border); overflow: hidden; transition: transform .3s var(--ease), box-shadow .3s var(--ease); }
.principle::after { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 4px; background: var(--grad); }
.principle:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.principle-num { font-family: "Sora", sans-serif; font-size: 2.1rem; font-weight: 700; color: transparent; -webkit-text-stroke: 1.2px var(--teal); display: block; margin-bottom: 14px; }
.principle h3 { font-size: 1.3rem; margin-bottom: 10px; color: var(--slate-2); }
.principle p { color: var(--muted); margin: 0; font-size: .96rem; }

/* ===== Statement block ===== */
.statement { padding: 104px 0; background: var(--grad); color: #fff; text-align: center; position: relative; overflow: hidden; }
.statement::after { content: ""; position: absolute; inset: 0; background: radial-gradient(ellipse 70% 80% at 50% 0%, rgba(213,242,246,.18), transparent 60%); pointer-events: none; }
.statement .container { position: relative; z-index: 1; max-width: 900px; }
.statement-mark { font-family: "Sora", sans-serif; font-size: 4.5rem; line-height: 0; margin: 0 0 8px; color: rgba(213,242,246,.7); height: 40px; }
.statement-quote { font-family: "Sora", sans-serif; font-weight: 600; font-size: clamp(1.5rem, 3.4vw, 2.4rem); line-height: 1.3; letter-spacing: -0.02em; margin: 0; }
.statement-by { margin: 28px 0 0; font-family: "Sora", sans-serif; font-weight: 700; font-size: 1.1rem; letter-spacing: .02em; }
.statement-by .accent { color: #d5f2f6; }

/* ===== Contact ===== */
.contact-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.contact-copy h2 { font-size: clamp(1.8rem, 3.2vw, 2.5rem); margin-bottom: 16px; color: var(--slate-2); }
.contact-copy p { color: var(--muted); margin-bottom: 22px; }
.contact-email { display: inline-block; font-family: "Sora", sans-serif; font-size: 1.2rem; color: var(--teal-deep); border-bottom: 1px solid transparent; transition: border-color .2s; }
.contact-email:hover { border-bottom-color: var(--teal); }
.contact-form { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 30px; display: grid; gap: 18px; box-shadow: var(--shadow); }
.field { display: grid; gap: 7px; }
.field label { font-size: 13px; color: var(--muted); font-weight: 500; }
.field input, .field textarea { background: var(--bg); border: 1px solid var(--border); border-radius: 10px; color: var(--text); padding: 12px 14px; font: inherit; font-size: 15px; transition: border-color .2s var(--ease), box-shadow .2s var(--ease); width: 100%; resize: vertical; }
.field input:focus, .field textarea:focus { outline: none; border-color: var(--teal); box-shadow: 0 0 0 3px rgba(21,154,174,.15); }
.contact-form .btn { margin-top: 4px; }

/* ===== Footer ===== */
.site-footer { border-top: 1px solid var(--border); background: var(--slate-2); color: #fff; padding: 54px 0 30px; }
.site-footer .brand-name { color: #fff; }
.site-footer .brand-name .accent { color: #8fd6e0; }
.footer-inner { display: flex; justify-content: space-between; align-items: flex-start; gap: 30px; flex-wrap: wrap; padding-bottom: 34px; border-bottom: 1px solid rgba(255,255,255,.14); }
.footer-tag { color: rgba(255,255,255,.72); margin: 14px 0 0; font-size: .95rem; }
.footer-nav { display: flex; gap: 26px; flex-wrap: wrap; }
.footer-nav a { color: rgba(255,255,255,.78); font-size: 15px; transition: color .2s; }
.footer-nav a:hover { color: #8fd6e0; }
.footer-bottom { display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap; color: rgba(255,255,255,.62); font-size: 14px; padding-top: 22px; }

/* ===== Reveal ===== */
.js .reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.js .reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .js .reveal { opacity: 1; transform: none; transition: none; } }

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; gap: 44px; }
  .hero-copy { max-width: none; }
  .hero-visual { order: -1; }
  .arc-stage { width: min(320px, 78%); }
  .contact-inner { grid-template-columns: 1fr; gap: 38px; }
  .timeline { grid-template-columns: repeat(2, 1fr); gap: 34px 28px; }
  .timeline::before { display: none; }
  .focus-list { grid-template-columns: 1fr; }
  .focus-row, .focus-row:nth-child(odd) { border-right: 0; }
  .focus-row:nth-child(3) { background: var(--surface); border-bottom: 1px solid var(--border); }
  .focus-row:nth-child(even) { background: var(--bg-alt); }
  .focus-row:last-child { border-bottom: 0; }
  .principles { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .nav-toggle { display: flex; }
  .nav { position: fixed; inset: 74px 0 auto 0; flex-direction: column; gap: 4px; align-items: stretch; background: rgba(255,255,255,.98); backdrop-filter: blur(14px); border-bottom: 1px solid var(--border); padding: 16px 24px 24px; transform: translateY(-120%); transition: transform .35s var(--ease); z-index: 90; box-shadow: 0 12px 30px -18px rgba(20,49,58,.5); }
  .nav.open { transform: translateY(0); }
  .nav a { padding: 12px 4px; font-size: 17px; border-bottom: 1px solid var(--border); }
  .nav .nav-cta { text-align: center; margin-top: 10px; border: 1px solid var(--teal) !important; color: var(--teal) !important; }
  .hero { padding: 128px 0 76px; }
  .section { padding: 68px 0; }
  .statement { padding: 76px 0; }
}
@media (max-width: 480px) {
  .timeline { grid-template-columns: 1fr; gap: 26px; }
  .footer-inner { flex-direction: column; }
  .chip-vision { left: 0; }
  .chip-growth { right: 0; }
}