/* Couple Calendar — landing. Monochrome, minimal. No colored accents. */
:root {
  --bg: #ffffff;
  --fg: #0a0a0a;
  --muted: #6b7280;
  --line: #ececec;
  --soft: #f6f6f7;
  --radius: 16px;
  --maxw: 1080px;
  --font: -apple-system, BlinkMacSystemFont, "Pretendard", "Apple SD Gothic Neo",
          system-ui, "Segoe UI", Roboto, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0b0c;
    --fg: #f4f4f5;
    --muted: #9ca3af;
    --line: #232326;
    --soft: #151517;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--fg);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

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

.skip {
  position: absolute; left: -999px; top: 0; background: var(--fg); color: var(--bg);
  padding: 8px 14px; border-radius: 8px;
}
.skip:focus { left: 12px; top: 12px; z-index: 100; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--fg); color: var(--bg);
  border: 1px solid var(--fg);
  border-radius: 999px; font-weight: 600; letter-spacing: -0.01em;
  padding: 12px 20px; transition: opacity .15s ease, transform .15s ease;
  white-space: nowrap;
}
.btn:hover { opacity: .88; }
.btn:active { transform: translateY(1px); }
.btn-sm { padding: 8px 16px; font-size: 14px; }
.btn-lg { padding: 14px 24px; font-size: 16px; }
.btn-invert { background: var(--bg); color: var(--fg); border-color: var(--bg); }

/* Nav */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; letter-spacing: -0.02em; }
.brand img { border-radius: 7px; }

/* Hero */
.hero {
  display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 40px; align-items: center;
  padding: 72px 24px 40px;
}
.hero h1 {
  font-size: clamp(34px, 6vw, 60px); line-height: 1.05; letter-spacing: -0.03em;
  margin: 0 0 18px; font-weight: 800;
}
.lead { font-size: clamp(16px, 2.2vw, 19px); color: var(--muted); margin: 0 0 28px; max-width: 30em; }
.cta { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.cta-note { color: var(--muted); font-size: 14px; }
.hero-shot { display: flex; justify-content: center; }

/* Phone screenshots */
.phone {
  width: 100%; max-width: 300px; height: auto;
  border-radius: 30px; border: 1px solid var(--line);
  box-shadow: 0 24px 60px -28px rgba(0,0,0,.45), 0 8px 24px -16px rgba(0,0,0,.3);
  background: var(--soft);
}
.hero-shot .phone { max-width: 320px; }

/* Sections */
.section { padding: 72px 0; }
.section-soft { background: var(--soft); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-title {
  font-size: clamp(24px, 4vw, 34px); letter-spacing: -0.02em; font-weight: 800;
  margin: 0 0 40px; text-align: center;
}

/* Features */
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.feature {
  border: 1px solid var(--line); border-radius: var(--radius); padding: 24px;
  background: var(--bg);
}
.feature .ic {
  display: inline-flex; align-items: center; justify-content: center;
  width: 42px; height: 42px; border-radius: 11px;
  border: 1px solid var(--line); background: var(--soft); margin-bottom: 14px;
}
.feature .ic svg { width: 22px; height: 22px; stroke-linecap: round; stroke-linejoin: round; }
.feature h3 { margin: 0 0 6px; font-size: 17px; letter-spacing: -0.01em; }
.feature p { margin: 0; color: var(--muted); font-size: 15px; }

/* Showcase */
.shots { display: flex; gap: 20px; justify-content: center; align-items: flex-start; flex-wrap: wrap; }
.shots .phone { max-width: 250px; }
.shots .phone-widget { align-self: center; }

/* CTA band */
.cta-band { background: var(--fg); color: var(--bg); text-align: center; padding: 80px 24px; }
.cta-band h2 { font-size: clamp(26px, 4.5vw, 38px); letter-spacing: -0.02em; margin: 0 0 10px; font-weight: 800; }
.cta-band p { color: color-mix(in srgb, var(--bg) 70%, var(--fg)); margin: 0 0 28px; }

/* Footer */
.footer { border-top: 1px solid var(--line); padding: 36px 0; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.footer .brand { font-size: 15px; }
.footer-links { display: flex; gap: 20px; flex-wrap: wrap; }
.footer-links a { color: var(--muted); font-size: 14px; }
.footer-links a:hover { color: var(--fg); }
.copy { color: var(--muted); font-size: 13px; margin: 0; }

/* Responsive */
@media (max-width: 820px) {
  .hero { grid-template-columns: 1fr; text-align: center; padding-top: 48px; gap: 28px; }
  .lead { margin-left: auto; margin-right: auto; }
  .cta { justify-content: center; }
  .features { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; text-align: center; }
}
@media (min-width: 560px) and (max-width: 820px) {
  .features { grid-template-columns: repeat(2, 1fr); }
}

/* Document pages (privacy / support) */
.doc { max-width: 760px; padding: 56px 24px 80px; }
.doc h1 { font-size: clamp(26px, 5vw, 36px); letter-spacing: -0.02em; margin: 0 0 6px; font-weight: 800; }
.doc .eff { color: var(--muted); font-size: 14px; margin: 0 0 32px; }
.doc h2 { font-size: 18px; letter-spacing: -0.01em; margin: 32px 0 10px; }
.doc h3 { font-size: 16px; margin: 22px 0 4px; }
.doc p, .doc li { color: var(--fg); font-size: 15.5px; }
.doc p { margin: 0 0 12px; }
.doc ul { margin: 0 0 14px; padding-left: 20px; }
.doc li { margin: 4px 0; }
.doc a { text-decoration: underline; text-underline-offset: 2px; }
.doc .back { display: inline-block; margin-top: 36px; color: var(--muted); text-decoration: none; }
.doc .back:hover { color: var(--fg); }
.doc .faq p { color: var(--muted); }

/* Language switcher (dropdown) */
.nav-actions { display: flex; align-items: center; gap: 10px; }
.lang {
  display: inline-flex; align-items: center; gap: 5px;
  border: 1px solid var(--line); border-radius: 999px;
  padding-left: 10px; color: var(--muted);
  transition: border-color .15s ease;
}
.lang:hover { border-color: var(--muted); }
.lang-globe { flex: none; }
.lang select {
  appearance: none; -webkit-appearance: none; border: 0; outline: 0;
  background: transparent; color: var(--fg); font: inherit; font-size: 13px; font-weight: 600;
  padding: 8px 24px 8px 2px; cursor: pointer; line-height: 1;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%239ca3af' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 7px center; background-size: 13px;
}
.lang select:focus-visible { outline: 2px solid var(--fg); outline-offset: 3px; border-radius: 6px; }
.lang option { color: #111; background: #fff; }