/* ========== CirCow International Site - Shared Styles ========== */
:root {
  --bg: #ffffff;
  --surface: #ffffff;
  --ink: #111827;
  --muted: #6b7280;
  --line: #e5e7eb;
  --soft-line: rgba(17, 24, 39, 0.08);
  --dark: #0f172a;
  --blue: #3b82f6;
  --blue-dark: #2563eb;
  --silver: #f3f4f6;
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --shadow-soft: 0 24px 80px rgba(59, 130, 246, 0.10);
  --shadow-card: 0 8px 32px rgba(17, 24, 39, 0.06);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: geometricPrecision;
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }

.page {
  min-height: 100vh;
  background:
    radial-gradient(circle at 78% 8%, rgba(59, 130, 246, 0.18), transparent 30%),
    radial-gradient(circle at 18% 18%, rgba(139, 92, 246, 0.14), transparent 26%),
    linear-gradient(180deg, #ffffff 0%, #f8fafc 44%, #ffffff 100%);
}

/* ===== Nav ===== */
.nav {
  position: sticky; top: 0; z-index: 20;
  backdrop-filter: blur(22px) saturate(180%);
  background: rgba(255, 255, 255, 0.85);
  border-bottom: 1px solid rgba(229, 231, 235, 0.85);
}
.nav-inner {
  width: min(1180px, calc(100% - 40px));
  height: 64px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  font-weight: 700; letter-spacing: -0.03em; font-size: 18px;
}
.logo-mark {
  width: 34px; height: 34px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: linear-gradient(145deg, #ffffff, #e8e8ed);
  box-shadow: inset 0 0 0 1px rgba(29, 29, 31, 0.08), 0 10px 26px rgba(29, 29, 31, 0.12);
  font-weight: 800; color: var(--blue-dark);
}
.nav-links {
  display: flex; align-items: center; gap: 28px;
  font-size: 14px; color: rgba(29, 29, 31, 0.74);
}
.nav-links a:hover { color: var(--ink); }
.btn-pill {
  display: inline-flex; align-items: center; justify-content: center;
  height: 36px; padding: 0 18px; border-radius: 999px;
  color: #fff; background: var(--blue); font-weight: 600; font-size: 14px;
  transition: background 0.15s;
}
.btn-pill:hover { background: var(--blue-dark); }

/* ===== Container ===== */
.container {
  width: min(1080px, calc(100% - 40px));
  margin: 0 auto;
}
.section { padding: 80px 0; }
.section-narrow { padding: 56px 0; }

/* ===== Hero ===== */
.hero { padding: 96px 0 64px; text-align: center; }
.hero h1 {
  font-size: clamp(40px, 6vw, 72px);
  letter-spacing: -0.04em; line-height: 1.05;
  margin: 0 0 24px;
}
.hero h1 .accent {
  background: linear-gradient(135deg, var(--blue), #8b5cf6);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero p.lead {
  font-size: clamp(18px, 2vw, 22px);
  color: var(--muted); max-width: 680px; margin: 0 auto 36px;
}
.hero .cta-row {
  display: flex; gap: 16px; justify-content: center; flex-wrap: wrap;
}
.btn-primary, .btn-secondary {
  display: inline-flex; align-items: center; justify-content: center;
  height: 52px; padding: 0 28px; border-radius: 999px;
  font-weight: 600; font-size: 16px;
  transition: transform 0.15s, box-shadow 0.15s;
}
.btn-primary {
  background: var(--blue); color: #fff;
  box-shadow: 0 12px 32px rgba(59, 130, 246, 0.32);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 40px rgba(59, 130, 246, 0.4); }
.btn-secondary {
  background: #fff; color: var(--ink);
  border: 1px solid var(--line);
}
.btn-secondary:hover { background: var(--silver); }

/* ===== Section heading ===== */
.section-head { text-align: center; margin-bottom: 56px; }
.section-head .kicker {
  display: inline-block;
  font-size: 13px; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.12em;
  color: var(--blue); margin-bottom: 12px;
}
.section-head h2 {
  font-size: clamp(32px, 4vw, 48px);
  letter-spacing: -0.03em; margin: 0 0 16px;
}
.section-head p {
  font-size: 18px; color: var(--muted); max-width: 640px; margin: 0 auto;
}

/* ===== Feature grid ===== */
.feature-grid {
  display: grid; gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}
.feature-card {
  background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius-lg); padding: 32px;
  box-shadow: var(--shadow-card);
  transition: transform 0.15s, box-shadow 0.15s;
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(17, 24, 39, 0.10);
}
.feature-card .icon {
  width: 48px; height: 48px;
  display: grid; place-items: center;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(59,130,246,0.12), rgba(139,92,246,0.12));
  font-size: 24px; margin-bottom: 20px;
}
.feature-card h3 {
  font-size: 20px; margin: 0 0 10px; letter-spacing: -0.01em;
}
.feature-card p { color: var(--muted); margin: 0; font-size: 15px; }

/* ===== Pricing ===== */
.pricing-grid {
  display: grid; gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  max-width: 1000px; margin: 0 auto;
}
.price-card {
  background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius-lg); padding: 36px;
  display: flex; flex-direction: column;
  box-shadow: var(--shadow-card);
}
.price-card.featured {
  border: 2px solid var(--blue);
  box-shadow: var(--shadow-soft);
  position: relative;
}
.price-card.featured::before {
  content: "Most Popular";
  position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
  background: var(--blue); color: #fff;
  font-size: 12px; font-weight: 700; letter-spacing: 0.04em;
  padding: 6px 14px; border-radius: 999px;
}
.price-card .plan-name {
  font-size: 14px; font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.08em; color: var(--muted); margin-bottom: 8px;
}
.price-card .price {
  font-size: 48px; font-weight: 700; letter-spacing: -0.03em;
  margin: 0 0 4px;
}
.price-card .price .period { font-size: 16px; color: var(--muted); font-weight: 500; }
.price-card .desc { color: var(--muted); margin: 8px 0 24px; font-size: 14px; }
.price-card ul {
  list-style: none; padding: 0; margin: 0 0 28px;
  flex-grow: 1;
}
.price-card ul li {
  padding: 10px 0; border-bottom: 1px solid var(--soft-line);
  font-size: 14px; color: #374151;
  display: flex; align-items: flex-start; gap: 10px;
}
.price-card ul li::before {
  content: "✓"; color: var(--blue); font-weight: 700; flex-shrink: 0;
}
.price-card .btn-cta {
  display: inline-flex; align-items: center; justify-content: center;
  height: 48px; border-radius: 999px;
  font-weight: 600; font-size: 15px;
  background: var(--ink); color: #fff;
  transition: background 0.15s;
}
.price-card.featured .btn-cta { background: var(--blue); }
.price-card .btn-cta:hover { background: var(--blue-dark); }

/* ===== Legal pages ===== */
.legal {
  background: #fff;
  width: min(820px, calc(100% - 40px));
  margin: 56px auto;
  padding: 56px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-card);
}
.legal h1 {
  font-size: 36px; letter-spacing: -0.02em; margin: 0 0 8px;
}
.legal .updated {
  color: var(--muted); font-size: 14px; margin: 0 0 32px;
}
.legal h2 {
  font-size: 22px; margin: 32px 0 12px;
  letter-spacing: -0.01em;
}
.legal h3 {
  font-size: 17px; margin: 20px 0 8px;
}
.legal p, .legal li {
  color: #374151; font-size: 15px; line-height: 1.75;
}
.legal ul { padding-left: 24px; }
.legal a { color: var(--blue); text-decoration: underline; }
.legal strong { color: var(--ink); }
.legal .info-box {
  background: #f8fafc; border-left: 4px solid var(--blue);
  padding: 16px 20px; border-radius: 8px; margin: 20px 0;
}

/* ===== Footer ===== */
.footer {
  border-top: 1px solid var(--line);
  background: #fafbfc;
  padding: 56px 0 32px;
  margin-top: 80px;
}
.footer-inner {
  width: min(1080px, calc(100% - 40px)); margin: 0 auto;
  display: grid; gap: 40px;
  grid-template-columns: 2fr 1fr 1fr 1fr;
}
.footer-brand p {
  color: var(--muted); font-size: 14px; margin: 12px 0 0; max-width: 280px;
}
.footer-col h4 {
  font-size: 13px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--ink); margin: 0 0 16px;
}
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col li { margin-bottom: 10px; }
.footer-col a { color: var(--muted); font-size: 14px; }
.footer-col a:hover { color: var(--ink); }
.footer-bottom {
  width: min(1080px, calc(100% - 40px)); margin: 40px auto 0;
  padding-top: 24px; border-top: 1px solid var(--soft-line);
  text-align: center; color: var(--muted); font-size: 13px;
}

@media (max-width: 720px) {
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .nav-links { gap: 16px; font-size: 13px; }
  .nav-links a:not(.btn-pill) { display: none; }
  .legal { padding: 32px 24px; }
}


/* ===== Logo image (replaces text-only mark) ===== */
.logo-mark-img {
  width: 32px; height: 32px;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.25);
}

/* ===== Social row in footer ===== */
.social-row {
  display: flex; gap: 12px; margin-top: 18px;
}
.social-row a {
  width: 36px; height: 36px;
  display: inline-grid; place-items: center;
  border-radius: 50%;
  background: #fff; border: 1px solid var(--line);
  color: var(--muted); font-weight: 700;
  transition: all 0.15s;
}
.social-row a:hover {
  color: var(--blue); border-color: var(--blue);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(59, 130, 246, 0.2);
}

/* ===== Download page ===== */
.download-grid {
  display: grid; gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  max-width: 880px; margin: 0 auto;
}
.download-card {
  background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius-lg); padding: 36px;
  text-align: center;
  box-shadow: var(--shadow-card);
}
.download-card .platform-icon {
  font-size: 56px; margin-bottom: 16px; line-height: 1;
}
.download-card h3 {
  font-size: 24px; margin: 0 0 8px; letter-spacing: -0.01em;
}
.download-card .meta {
  color: var(--muted); font-size: 14px; margin: 0 0 24px;
}
.download-card .btn-download {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px;
  height: 52px; padding: 0 32px; border-radius: 999px;
  font-weight: 600; font-size: 16px;
  background: var(--blue); color: #fff;
  transition: all 0.15s;
}
.download-card .btn-download:hover {
  background: var(--blue-dark); transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(59, 130, 246, 0.32);
}
.download-card .btn-disabled {
  display: inline-flex; align-items: center; justify-content: center;
  height: 52px; padding: 0 32px; border-radius: 999px;
  font-weight: 600; font-size: 16px;
  background: var(--silver); color: var(--muted);
  cursor: not-allowed;
}
.download-card .system-req {
  margin-top: 20px; font-size: 13px; color: var(--muted);
}

/* ===== FAQ accordion ===== */
.faq-list { max-width: 760px; margin: 0 auto; display: grid; gap: 12px; }
.faq-item {
  background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.faq-item summary {
  padding: 20px 24px; cursor: pointer; font-weight: 600;
  font-size: 16px; color: var(--ink);
  list-style: none;
  display: flex; justify-content: space-between; align-items: center;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+"; font-size: 22px; color: var(--blue);
  transition: transform 0.2s;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item .faq-body {
  padding: 0 24px 20px;
  color: #374151; font-size: 15px; line-height: 1.7;
}
.faq-item .faq-body a { color: var(--blue); }