/* =========================================================
   STVC Webhook — landing page styles
   ========================================================= */

:root {
  --bg:        #0b1020;
  --bg-2:      #0e1430;
  --panel:     #111835;
  --panel-2:   #161e44;
  --line:      #2c3568;
  --text:      #e8ecff;
  --text-mut:  #9aa3c7;
  --text-dim:  #6e78a6;
  --primary:   #7c5cff;
  --accent:    #22d3ee;
  --accent-2:  #34d399;
  --danger:    #f87171;
  --radius:    16px;
  --radius-sm: 10px;
  --shadow-1:  0 1px 2px rgba(0,0,0,.4), 0 8px 24px rgba(0,0,0,.35);
  --shadow-2:  0 24px 60px rgba(124,92,255,.18);
  --container: 1200px;
  --grad:      linear-gradient(135deg, #7c5cff 0%, #22d3ee 100%);
  --grad-2:    linear-gradient(135deg, #22d3ee 0%, #34d399 100%);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a { color: var(--text); text-decoration: none; }
a:hover { color: #fff; }
code, pre {
  font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.92em;
}
code {
  background: rgba(124,92,255,.10);
  border: 1px solid rgba(124,92,255,.22);
  border-radius: 6px;
  padding: 1px 6px;
  color: #c8c0ff;
}

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

/* ---------- Backdrop ---------- */
.bg-grid {
  position: fixed; inset: 0; z-index: -2;
  background-image:
    linear-gradient(rgba(124,92,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(124,92,255,.05) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at top, #000 30%, transparent 75%);
  pointer-events: none;
}
.bg-orb {
  position: fixed; z-index: -1;
  width: 620px; height: 620px;
  border-radius: 50%;
  filter: blur(120px);
  opacity: .55;
  pointer-events: none;
  animation: float 18s ease-in-out infinite;
}
.orb-a { top: -180px; left: -160px; background: #7c5cff; }
.orb-b { top: 30%; right: -200px; background: #22d3ee; opacity: .42; animation-delay: -6s; }
@keyframes float {
  0%, 100% { transform: translate(0,0); }
  50%      { transform: translate(40px, 30px); }
}

/* ---------- Layout helpers ---------- */
.section {
  max-width: var(--container);
  margin: 0 auto;
  padding: 96px 28px;
}
.section-head {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 56px;
}
.kicker {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(34,211,238,.08);
  border: 1px solid rgba(34,211,238,.25);
  padding: 6px 12px;
  border-radius: 999px;
  margin-bottom: 18px;
}
.section-head h2 {
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.15;
  margin: 0 0 14px;
  letter-spacing: -.02em;
  font-weight: 800;
}
.section-head p {
  color: var(--text-mut);
  font-size: 17px;
  margin: 0;
}
.grad   { background: var(--grad);   -webkit-background-clip: text; background-clip: text; color: transparent; }
.grad-2 { background: var(--grad-2); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px;
  padding: 14px 28px;
  max-width: var(--container);
  margin: 0 auto;
  backdrop-filter: blur(14px);
  background: rgba(11,16,32,.55);
  border-bottom: 1px solid rgba(124,92,255,.12);
}
.brand {
  display: flex; align-items: center; gap: 12px;
  color: var(--text);
}
.brand-logo {
  width: 40px; height: 40px;
  display: inline-block;
  filter: drop-shadow(0 6px 18px rgba(124,92,255,.45));
}
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-name {
  font-weight: 800;
  font-size: 17px;
  letter-spacing: -.01em;
}
.brand-tag {
  font-size: 11px;
  color: var(--text-mut);
  letter-spacing: .04em;
}

.primary-nav {
  display: flex; align-items: center; gap: 6px;
  background: rgba(255,255,255,.02);
  border: 1px solid rgba(255,255,255,.06);
  padding: 6px;
  border-radius: 999px;
}
.primary-nav a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-mut);
  padding: 8px 14px;
  border-radius: 999px;
  transition: color .15s ease, background .15s ease;
}
.primary-nav a:hover { color: var(--text); background: rgba(124,92,255,.12); }

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 10px;
  width: 40px; height: 40px;
  cursor: pointer;
  flex-direction: column;
  align-items: center; justify-content: center;
  gap: 4px;
}
.nav-toggle span {
  display: block; width: 18px; height: 2px;
  background: var(--text); border-radius: 2px;
  transition: transform .2s ease, opacity .2s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.mobile-nav {
  display: none;
  flex-direction: column;
  position: sticky; top: 70px; z-index: 49;
  margin: 0 16px;
  padding: 12px;
  border-radius: var(--radius);
  background: rgba(17,24,53,.95);
  border: 1px solid var(--line);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow-1);
}
.mobile-nav.is-open { display: flex; }
.mobile-nav[hidden] { display: none !important; }
.mobile-nav a {
  padding: 12px 14px;
  border-radius: 10px;
  color: var(--text-mut);
  font-weight: 500;
}
.mobile-nav a:hover { background: rgba(124,92,255,.10); color: var(--text); }

/* ---------- Hero ---------- */
.hero {
  max-width: var(--container);
  margin: 0 auto;
  padding: 64px 28px 40px;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 56px;
  align-items: center;
}
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12px; font-weight: 600;
  letter-spacing: .08em; text-transform: uppercase;
  color: var(--text-mut);
  background: rgba(255,255,255,.03);
  border: 1px solid rgba(255,255,255,.08);
  padding: 6px 12px;
  border-radius: 999px;
  margin-bottom: 24px;
}
.eyebrow .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent-2);
  box-shadow: 0 0 0 4px rgba(52,211,153,.18);
  animation: pulse 2.2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 4px rgba(52,211,153,.18); }
  50%      { box-shadow: 0 0 0 8px rgba(52,211,153,.05); }
}

.hero-title {
  font-size: clamp(34px, 5.2vw, 60px);
  line-height: 1.05;
  letter-spacing: -.025em;
  font-weight: 800;
  margin: 0 0 22px;
}
.hero-sub {
  font-size: 18px;
  color: var(--text-mut);
  max-width: 600px;
  margin: 0 0 32px;
}
.hero-sub strong { color: var(--text); font-weight: 600; }

.hero-cta {
  display: flex; gap: 12px; flex-wrap: wrap;
  margin-bottom: 32px;
}
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  font-weight: 600; font-size: 15px;
  padding: 12px 20px;
  border-radius: 12px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease, border-color .15s ease;
}
.btn-primary {
  background: var(--grad);
  color: #0b1020;
  box-shadow: 0 12px 30px rgba(124,92,255,.35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 18px 40px rgba(124,92,255,.45); color: #0b1020; }
.btn-ghost {
  background: rgba(255,255,255,.04);
  color: var(--text);
  border-color: rgba(255,255,255,.10);
}
.btn-ghost:hover { background: rgba(255,255,255,.08); border-color: rgba(255,255,255,.18); }
.btn.big { padding: 16px 24px; font-size: 16px; }

.hero-pills {
  list-style: none; padding: 0; margin: 0;
  display: flex; flex-wrap: wrap; gap: 8px;
}
.hero-pills li span {
  display: inline-block;
  font-size: 12px; font-weight: 500;
  color: var(--text-mut);
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(255,255,255,.03);
  border: 1px solid rgba(255,255,255,.08);
}

.hero-art {
  position: relative;
  padding: 14px;
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(124,92,255,.10), rgba(34,211,238,.04));
  border: 1px solid rgba(124,92,255,.20);
  box-shadow: var(--shadow-2);
}

/* ---------- Cards / grid ---------- */
.card {
  background: linear-gradient(180deg, var(--panel), var(--bg-2));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-1);
  transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.card:hover {
  transform: translateY(-4px);
  border-color: rgba(124,92,255,.45);
  box-shadow: 0 20px 40px rgba(124,92,255,.18);
}

.grid {
  display: grid;
  gap: 20px;
}
.grid.features { grid-template-columns: repeat(4, 1fr); }
.grid.use-cases { grid-template-columns: repeat(3, 1fr); }

.feature .ico {
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(124,92,255,.20), rgba(34,211,238,.12));
  color: var(--accent);
  margin-bottom: 16px;
}
.feature .ico svg { width: 22px; height: 22px; }
.feature h3 { margin: 0 0 8px; font-size: 17px; font-weight: 700; }
.feature p { margin: 0; color: var(--text-mut); font-size: 14.5px; }

.use h3 { margin: 0 0 8px; font-size: 18px; font-weight: 700; }
.use p { margin: 0; color: var(--text-mut); font-size: 15px; }

/* ---------- How it works ---------- */
.how-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}
.steps {
  list-style: none; padding: 0; margin: 0;
  display: flex; flex-direction: column; gap: 18px;
}
.steps li {
  display: flex; gap: 16px;
  background: linear-gradient(180deg, var(--panel), var(--bg-2));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
}
.step-num {
  flex: 0 0 auto;
  width: 36px; height: 36px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  background: var(--grad);
  color: #0b1020;
  font-weight: 800;
}
.steps h4 { margin: 0 0 4px; font-size: 16px; font-weight: 700; }
.steps p  { margin: 0; color: var(--text-mut); font-size: 14.5px; }

.how-art {
  position: sticky; top: 96px;
  padding: 18px;
  border-radius: 20px;
  background: linear-gradient(180deg, rgba(124,92,255,.08), rgba(34,211,238,.03));
  border: 1px solid rgba(124,92,255,.18);
}

/* ---------- Architecture ---------- */
.arch-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 40px;
}
.arch header { margin-bottom: 16px; }
.arch h3 { margin: 8px 0 0; font-size: 20px; font-weight: 800; }
.arch ul { margin: 0; padding-left: 18px; color: var(--text-mut); }
.arch li { margin: 8px 0; font-size: 15px; }
.arch li strong { color: var(--text); font-weight: 600; }
.arch-tag {
  display: inline-block;
  font-size: 11px; letter-spacing: .12em; text-transform: uppercase;
  color: var(--accent); font-weight: 700;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(34,211,238,.10);
  border: 1px solid rgba(34,211,238,.28);
}
.arch-tag-2 { color: var(--primary); background: rgba(124,92,255,.12); border-color: rgba(124,92,255,.32); }

.callout {
  display: grid; grid-template-columns: auto 1fr;
  gap: 24px; align-items: center;
  padding: 28px;
  border-radius: 20px;
  background:
    radial-gradient(80% 120% at 0% 0%, rgba(124,92,255,.18), transparent 60%),
    radial-gradient(80% 120% at 100% 100%, rgba(34,211,238,.16), transparent 60%),
    var(--panel);
  border: 1px solid rgba(124,92,255,.30);
}
.callout-icon {
  width: 72px; height: 72px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 18px;
  background: var(--grad);
  color: #0b1020;
}
.callout-icon svg { width: 32px; height: 32px; }
.callout h3 { margin: 0 0 6px; font-size: 22px; font-weight: 800; }
.callout p  { margin: 0; color: var(--text-mut); }

/* ---------- Code blocks ---------- */
.code-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.code-card {
  background: linear-gradient(180deg, #0d1330, #0a0f25);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-1);
}
.code-card header {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 16px;
  background: rgba(255,255,255,.02);
  border-bottom: 1px solid var(--line);
}
.dotrow { display: inline-flex; gap: 6px; }
.dotrow i {
  width: 11px; height: 11px; border-radius: 50%;
  background: #2c3568;
}
.dotrow i:nth-child(1) { background: #f87171; }
.dotrow i:nth-child(2) { background: #fbbf24; }
.dotrow i:nth-child(3) { background: #34d399; }
.code-title { font-size: 12.5px; color: var(--text-mut); font-weight: 600; }
.code-card pre {
  margin: 0; padding: 18px 18px 22px;
  overflow-x: auto;
  color: #d6dcff;
  font-size: 13.5px;
  line-height: 1.65;
}
.c-mut { color: var(--text-dim); }
.c-cmd { color: var(--accent); font-weight: 600; }

/* ---------- Contact ---------- */
.contact { padding-top: 40px; }
.contact-card {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 28px; align-items: center;
  padding: 40px;
  border-radius: 22px;
  background:
    radial-gradient(60% 100% at 100% 0%, rgba(124,92,255,.22), transparent 60%),
    radial-gradient(60% 100% at 0% 100%, rgba(34,211,238,.20), transparent 60%),
    var(--panel);
  border: 1px solid rgba(124,92,255,.30);
  box-shadow: var(--shadow-2);
}
.contact-card h2 {
  margin: 8px 0 6px;
  font-size: clamp(24px, 3.4vw, 34px);
  font-weight: 800;
  letter-spacing: -.02em;
}
.contact-card p { margin: 0; color: var(--text-mut); }

/* ---------- Footer ---------- */
.site-footer {
  margin-top: 60px;
  padding: 40px 28px;
  border-top: 1px solid rgba(124,92,255,.14);
  background: rgba(11,16,32,.6);
}
.footer-inner {
  max-width: var(--container);
  margin: 0 auto;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 24px; align-items: center;
}
.brand-footer .brand-logo { width: 36px; height: 36px; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 8px 18px; justify-content: center; }
.footer-nav a { color: var(--text-mut); font-size: 14px; }
.footer-nav a:hover { color: var(--text); }
.copy { margin: 0; color: var(--text-dim); font-size: 13px; text-align: right; }

/* ---------- Reveal animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .7s ease, transform .7s ease;
}
.reveal.in {
  opacity: 1;
  transform: translateY(0);
}

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 1024px) {
  .grid.features  { grid-template-columns: repeat(2, 1fr); }
  .grid.use-cases { grid-template-columns: repeat(2, 1fr); }
  .hero { grid-template-columns: 1fr; gap: 36px; }
  .how-grid { grid-template-columns: 1fr; }
  .how-art { position: relative; top: 0; }
  .code-grid { grid-template-columns: 1fr; }
  .arch-grid { grid-template-columns: 1fr; }
  .callout { grid-template-columns: 1fr; text-align: left; }
  .footer-inner { grid-template-columns: 1fr; text-align: center; }
  .copy { text-align: center; }
}

@media (max-width: 720px) {
  .primary-nav { display: none; }
  .nav-toggle  { display: inline-flex; }
  .grid.features, .grid.use-cases { grid-template-columns: 1fr; }
  .section { padding: 64px 20px; }
  .hero { padding: 40px 20px 20px; }
  .contact-card { grid-template-columns: 1fr; padding: 28px; }
  .contact-card .btn { justify-content: center; }
  .brand-tag { display: none; }
  .site-header { padding: 12px 16px; }
}

@media (min-width: 721px) {
  .mobile-nav, .mobile-nav.is-open { display: none !important; }
}

@media (max-width: 420px) {
  .btn { width: 100%; justify-content: center; }
  .hero-cta { flex-direction: column; }
  .callout { padding: 22px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important;
    transition-duration: .001ms !important;
  }
}

/* =========================================================
   Language switcher
   ========================================================= */
.lang-switcher {
  position: relative;
  display: inline-flex;
  align-items: center;
}
.lang-current {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.10);
  color: var(--text);
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  border-radius: 999px;
  cursor: pointer;
  transition: background .15s ease, border-color .15s ease, transform .15s ease;
}
.lang-current:hover {
  background: rgba(124,92,255,.14);
  border-color: rgba(124,92,255,.40);
}
.lang-current:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.lang-current svg { color: var(--accent); }
.lang-current-label {
  letter-spacing: .04em;
}

.lang-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  z-index: 60;
  list-style: none;
  margin: 0;
  padding: 6px;
  min-width: 200px;
  background: rgba(17,24,53,.98);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: 0 18px 40px rgba(0,0,0,.45), 0 4px 12px rgba(124,92,255,.20);
  backdrop-filter: blur(14px);
  animation: langFade .14s ease-out;
}
.lang-menu[hidden] { display: none; }

@keyframes langFade {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.lang-menu li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: 10px;
  cursor: pointer;
  color: var(--text-mut);
  font-size: 14px;
  font-weight: 500;
  transition: background .12s ease, color .12s ease;
  user-select: none;
}
.lang-menu li:hover,
.lang-menu li:focus-visible {
  background: rgba(124,92,255,.14);
  color: var(--text);
  outline: none;
}
.lang-menu li.is-current {
  background: linear-gradient(135deg, rgba(124,92,255,.20), rgba(34,211,238,.14));
  color: var(--text);
}
.lang-menu .lang-code {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 34px;
  padding: 3px 8px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--accent);
  background: rgba(34,211,238,.10);
  border: 1px solid rgba(34,211,238,.26);
  border-radius: 6px;
}
.lang-menu li.is-current .lang-code {
  color: #0b1020;
  background: var(--grad);
  border-color: transparent;
}
.lang-menu .lang-name {
  flex: 1;
}

@media (max-width: 720px) {
  .lang-current { padding: 7px 10px; font-size: 12px; }
  .lang-menu { right: 0; min-width: 180px; }
}

/* ---------- Cookie consent ---------- */
.cookie-consent {
  position: fixed;
  left: 50%;
  bottom: 20px;
  z-index: 1000;
  width: min(720px, calc(100% - 32px));
  transform: translate(-50%, 24px);
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s ease, transform .3s ease;
}
.cookie-consent.is-visible {
  transform: translate(-50%, 0);
  opacity: 1;
  pointer-events: auto;
}
.cookie-inner {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 18px 20px;
  background: rgba(17, 24, 53, .92);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-1), var(--shadow-2);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.cookie-text { flex: 1; min-width: 0; }
.cookie-title {
  margin: 0 0 4px;
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
}
.cookie-body {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--text-mut);
}
.cookie-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.cookie-decline {
  background: rgba(255,255,255,.04);
  color: var(--text);
  border-color: rgba(255,255,255,.10);
}
.cookie-decline:hover {
  background: rgba(255,255,255,.08);
  border-color: rgba(255,255,255,.18);
}

@media (max-width: 640px) {
  .cookie-inner { flex-direction: column; align-items: stretch; gap: 14px; }
  .cookie-actions { justify-content: flex-end; }
}

@media (prefers-reduced-motion: reduce) {
  .cookie-consent { transition: opacity .2s ease; transform: translate(-50%, 0); }
}