/* ===========================================================
   Idol Video Call Prank — marketing site styles
   Dark theme, vibrant teal/cyan accent (derived from app icon)
   =========================================================== */

:root {
  --bg: #061418;
  --bg-soft: #0a2128;
  --bg-card: rgba(255, 255, 255, 0.04);
  --bg-card-strong: rgba(255, 255, 255, 0.07);
  --border: rgba(120, 240, 230, 0.12);
  --border-strong: rgba(120, 240, 230, 0.24);
  --text: #ecfffb;
  --text-soft: #aed8d2;
  --text-mute: #6f968f;
  --accent: #19d3c5;
  --accent-2: #5ce9dd;
  --accent-3: #0fa89c;
  --accent-glow: rgba(25, 211, 197, 0.35);
  --pink: #ff6fae;
  --radius-card: 18px;
  --radius-hero: 28px;
  --radius-badge: 14px;
  --maxw: 1180px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Inter", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

/* ambient background glow */
body::before {
  content: "";
  position: fixed;
  top: -25%;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 900px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 60%);
  filter: blur(40px);
  opacity: 0.5;
  z-index: -1;
  pointer-events: none;
}

/* ---------------- nav ---------------- */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(6, 20, 24, 0.72);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -0.01em;
}
.brand img {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 30px;
}
.nav-links a {
  color: var(--text-soft);
  font-size: 15px;
  font-weight: 500;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--text); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  font-weight: 600;
  font-size: 15px;
  border-radius: 999px;
  padding: 11px 22px;
  cursor: pointer;
  border: none;
  transition: transform 0.15s ease, box-shadow 0.2s ease;
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent-2), var(--accent));
  color: #042421;
  box-shadow: 0 8px 24px var(--accent-glow);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 30px var(--accent-glow); }
.btn-ghost {
  background: var(--bg-card-strong);
  color: var(--text);
  border: 1px solid var(--border-strong);
}
.btn-ghost:hover { transform: translateY(-2px); border-color: var(--accent); }

/* ---------------- hero ---------------- */
.hero {
  position: relative;
  padding: 90px 0 70px;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}
.hero-icon {
  width: 84px;
  height: 84px;
  border-radius: 20px;
  box-shadow: 0 10px 40px var(--accent-glow);
  margin-bottom: 24px;
}
.hero h1 {
  font-size: clamp(36px, 5.2vw, 58px);
  line-height: 1.04;
  letter-spacing: -0.03em;
  font-weight: 800;
  margin-bottom: 20px;
}
.hero h1 .grad {
  background: linear-gradient(120deg, var(--accent-2), var(--accent), var(--pink));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero p.lead {
  font-size: 19px;
  color: var(--text-soft);
  max-width: 520px;
  margin-bottom: 30px;
}
.hero-cta {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.trust-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 26px;
  font-size: 13.5px;
  color: var(--text-mute);
}
.trust-row .dot { color: var(--accent); }

/* google play badge */
.googleplay-badge {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: #000;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: var(--radius-badge);
  padding: 10px 18px;
  transition: transform 0.15s ease, border-color 0.2s ease;
}
.googleplay-badge:hover { transform: translateY(-2px); border-color: rgba(255, 255, 255, 0.5); }
.googleplay-badge svg { width: 26px; height: 26px; flex-shrink: 0; }
.googleplay-badge .gp-text { display: flex; flex-direction: column; line-height: 1.1; }
.googleplay-badge .gp-small { font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase; color: #cfd6dd; }
.googleplay-badge .gp-big { font-size: 19px; font-weight: 600; color: #fff; letter-spacing: 0.01em; }

/* hero phones */
.hero-phones {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 520px;
}
.hero-phones img {
  position: absolute;
  width: 232px;
  border-radius: 32px;
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.55);
}
.hero-phones img.back {
  transform: rotate(8deg) translate(70px, 10px) scale(0.94);
  z-index: 1;
  opacity: 0.92;
}
.hero-phones img.front {
  transform: rotate(-6deg) translate(-50px, 0);
  z-index: 2;
}

/* ---------------- sections ---------------- */
section { padding: 80px 0; }
.section-head { text-align: center; max-width: 660px; margin: 0 auto 52px; }
.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}
.section-head h2 {
  font-size: clamp(28px, 3.6vw, 40px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-bottom: 14px;
}
.section-head p { font-size: 17px; color: var(--text-soft); }

/* features */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 28px 26px;
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}
.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-strong);
  background: var(--bg-card-strong);
}
.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 13px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--accent-glow), rgba(25, 211, 197, 0.08));
  border: 1px solid var(--border-strong);
  margin-bottom: 18px;
}
.feature-icon svg { width: 24px; height: 24px; stroke: var(--accent-2); }
.feature-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; letter-spacing: -0.01em; }
.feature-card p { font-size: 15px; color: var(--text-soft); }

/* screenshots scroller */
.screens-scroller {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: 8px 24px 28px;
  margin: 0 -24px;
  scrollbar-width: thin;
  scrollbar-color: var(--accent-3) transparent;
}
.screens-scroller::-webkit-scrollbar { height: 8px; }
.screens-scroller::-webkit-scrollbar-thumb { background: var(--accent-3); border-radius: 999px; }
.screens-scroller::-webkit-scrollbar-track { background: transparent; }
.screen-tile {
  flex: 0 0 auto;
  width: 280px;
  scroll-snap-align: center;
}
.screen-tile img {
  width: 100%;
  border-radius: 26px;
  border: 1px solid var(--border);
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.5);
  display: block;
}
.screen-tile .cap {
  text-align: center;
  margin-top: 14px;
  font-size: 14px;
  color: var(--text-mute);
}

/* privacy-first callout */
.privacy-first {
  background: linear-gradient(135deg, var(--bg-soft), rgba(15, 168, 156, 0.06));
  border: 1px solid var(--border);
  border-radius: var(--radius-hero);
  padding: 56px 48px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 44px;
  align-items: center;
}
.privacy-first .pf-icon {
  width: 60px;
  height: 60px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--accent-2), var(--accent));
  margin-bottom: 22px;
}
.privacy-first .pf-icon svg { width: 30px; height: 30px; stroke: #042421; }
.privacy-first h2 { font-size: 30px; font-weight: 800; letter-spacing: -0.02em; margin-bottom: 14px; line-height: 1.12; }
.privacy-first p { color: var(--text-soft); font-size: 16px; margin-bottom: 14px; }
.pf-list { list-style: none; display: grid; gap: 14px; }
.pf-list li { display: flex; gap: 12px; align-items: flex-start; font-size: 15px; color: var(--text-soft); }
.pf-list svg { width: 20px; height: 20px; stroke: var(--accent); flex-shrink: 0; margin-top: 2px; }

/* disclaimer band */
.disclaimer {
  margin-top: 40px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 22px 26px;
  font-size: 14px;
  color: var(--text-mute);
  text-align: center;
  max-width: 860px;
  margin-left: auto;
  margin-right: auto;
}
.disclaimer strong { color: var(--text-soft); }

/* download CTA */
.download-card {
  text-align: center;
  background: linear-gradient(135deg, var(--bg-soft), rgba(25, 211, 197, 0.08));
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-hero);
  padding: 64px 40px;
  position: relative;
  overflow: hidden;
}
.download-card img.dl-icon {
  width: 78px; height: 78px; border-radius: 18px;
  box-shadow: 0 10px 36px var(--accent-glow);
  margin-bottom: 22px;
}
.download-card h2 { font-size: clamp(28px, 4vw, 42px); font-weight: 800; letter-spacing: -0.02em; margin-bottom: 14px; }
.download-card p { font-size: 17px; color: var(--text-soft); max-width: 480px; margin: 0 auto 30px; }
.download-card .cta-wrap { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

/* ---------------- footer ---------------- */
footer {
  border-top: 1px solid var(--border);
  padding: 56px 0 36px;
  margin-top: 40px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand { display: flex; align-items: center; gap: 12px; font-weight: 700; font-size: 16px; margin-bottom: 14px; }
.footer-brand img { width: 36px; height: 36px; border-radius: 10px; }
.footer-col h4 { font-size: 13px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--text-mute); margin-bottom: 16px; }
.footer-col a { display: block; color: var(--text-soft); font-size: 15px; margin-bottom: 11px; transition: color 0.2s; }
.footer-col a:hover { color: var(--accent-2); }
.footer-col p { color: var(--text-soft); font-size: 15px; max-width: 280px; }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 26px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: var(--text-mute);
}

/* ---------------- legal / content pages ---------------- */
.page-hero {
  padding: 70px 0 30px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 40px;
}
.page-hero h1 { font-size: clamp(32px, 4.4vw, 46px); font-weight: 800; letter-spacing: -0.02em; margin-bottom: 10px; }
.page-hero .meta { color: var(--text-mute); font-size: 14px; }
.legal {
  max-width: 820px;
  margin: 0 auto;
  padding-bottom: 80px;
}
.legal h2 {
  font-size: 23px;
  font-weight: 700;
  margin: 38px 0 14px;
  letter-spacing: -0.01em;
  scroll-margin-top: 90px;
}
.legal h3 { font-size: 18px; font-weight: 700; margin: 24px 0 10px; color: var(--text); }
.legal p { color: var(--text-soft); margin-bottom: 14px; font-size: 15.5px; }
.legal ul { margin: 0 0 16px 22px; color: var(--text-soft); font-size: 15.5px; }
.legal li { margin-bottom: 9px; }
.legal a { color: var(--accent-2); text-decoration: underline; text-underline-offset: 2px; }
.legal strong { color: var(--text); }
.legal .summary-box {
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-card);
  padding: 24px 26px;
  margin: 24px 0;
}
.legal .summary-box ul { margin-bottom: 0; }
.sdk-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px 22px;
  margin-bottom: 16px;
}
.sdk-card h3 { margin-top: 0; }
.sdk-card .sdk-meta { font-size: 14px; color: var(--text-mute); margin-bottom: 6px; }
.toc {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 22px 26px;
  margin-bottom: 36px;
}
.toc h4 { font-size: 13px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--text-mute); margin-bottom: 14px; }
.toc ol { margin-left: 18px; columns: 2; column-gap: 30px; }
.toc li { margin-bottom: 7px; }
.toc a { color: var(--text-soft); font-size: 14.5px; text-decoration: none; }
.toc a:hover { color: var(--accent-2); }

/* FAQ */
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 24px 26px;
  margin-bottom: 16px;
}
.faq-item h3 { font-size: 17px; font-weight: 700; margin-bottom: 10px; }
.faq-item p { color: var(--text-soft); font-size: 15px; margin-bottom: 0; }
.faq-item p + p { margin-top: 10px; }
.contact-card {
  background: linear-gradient(135deg, var(--bg-soft), rgba(25, 211, 197, 0.07));
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-hero);
  padding: 44px;
  text-align: center;
  margin-top: 40px;
}
.contact-card h2 { border: none; margin: 0 0 12px; }
.contact-card a.email { font-size: 20px; font-weight: 700; color: var(--accent-2); }

/* ---------------- responsive ---------------- */
@media (max-width: 920px) {
  .hero { padding: 60px 0 40px; }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-phones { min-height: 440px; margin-top: 10px; }
  .hero-phones img { width: 200px; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .privacy-first { grid-template-columns: 1fr; padding: 40px 30px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
  .nav-links a:not(.btn) { display: none; }
  .toc ol { columns: 1; }
  section { padding: 60px 0; }
}
@media (max-width: 560px) {
  .features-grid { grid-template-columns: 1fr; }
  .hero-phones img { width: 168px; }
  .hero-phones img.front { transform: rotate(-5deg) translate(-34px, 0); }
  .hero-phones img.back { transform: rotate(7deg) translate(46px, 8px) scale(0.94); }
  .screen-tile { width: 230px; }
  .footer-grid { grid-template-columns: 1fr; }
  .download-card { padding: 44px 24px; }
  .privacy-first, .contact-card { padding: 32px 22px; }
}