/* ===== MahjongEYE landing — design tokens ===== */
:root {
  --green-900: #0b3d24;
  --green-800: #0f5132;
  --green-700: #15683f;
  --green-500: #1f9d5c;
  --gold:      #e0b341;
  --gold-soft: #f3d98a;
  --ink:       #14211b;
  --muted:     #5b6b63;
  --bg:        #f3f7f3;
  --bg-alt:    #e9f1ea;
  --card:      #ffffff;
  --line:      #dde7df;
  --radius:    18px;
  --shadow:    0 10px 30px rgba(15, 81, 50, 0.10);
  --shadow-lg: 0 24px 60px rgba(15, 81, 50, 0.20);
  --maxw:      1120px;
  --font: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { line-height: 1.3; letter-spacing: .01em; }

.brand-accent { color: var(--gold); }

/* ===== Header ===== */
.site-header {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px;
  padding: 12px clamp(16px, 4vw, 40px);
  background: rgba(243, 247, 243, .82);
  backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 20px; }
.brand-icon { width: 34px; height: 34px; border-radius: 9px; box-shadow: var(--shadow); }
.site-nav { display: flex; align-items: center; gap: clamp(10px, 2vw, 26px); font-weight: 600; }
.site-nav a { color: var(--muted); font-size: 15px; transition: color .15s; }
.site-nav a:hover { color: var(--green-800); }
.nav-cta {
  background: var(--green-800); color: #fff !important;
  padding: 8px 16px; border-radius: 999px; box-shadow: var(--shadow);
}
.nav-cta:hover { background: var(--green-700); }
.lang-toggle {
  font: inherit; font-weight: 700; font-size: 14px; cursor: pointer;
  color: var(--green-800); background: transparent;
  border: 1px solid var(--line); border-radius: 999px;
  padding: 6px 14px; line-height: 1; transition: background .15s, border-color .15s;
}
.lang-toggle:hover { background: #fff; border-color: var(--green-500); }
@media (max-width: 640px) { .site-nav a:not(.nav-cta) { display: none; } }

/* ===== Hero ===== */
.hero {
  background:
    radial-gradient(900px 500px at 15% -10%, rgba(224,179,65,.18), transparent 60%),
    linear-gradient(160deg, var(--green-900), var(--green-700) 55%, var(--green-800));
  color: #fff;
  padding: clamp(48px, 8vw, 96px) clamp(16px, 4vw, 40px) clamp(60px, 9vw, 110px);
}
.hero-inner {
  max-width: var(--maxw); margin: auto;
  display: grid; grid-template-columns: 1.1fr .9fr; gap: clamp(24px, 4vw, 56px);
  align-items: center;
}
.eyebrow {
  display: inline-block; font-weight: 700; font-size: 14px;
  background: rgba(255,255,255,.14); border: 1px solid rgba(255,255,255,.22);
  padding: 6px 14px; border-radius: 999px; margin-bottom: 20px;
}
.hero h1 { font-size: clamp(30px, 5vw, 52px); font-weight: 900; }
.hero h1 .hl { color: var(--gold-soft); }
.hero .lead { margin: 20px 0 28px; font-size: clamp(15px, 1.6vw, 18px); color: rgba(255,255,255,.9); max-width: 560px; }
.hero .lead strong { color: #fff; }

.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.hero-badges { list-style: none; margin-top: 26px; display: grid; gap: 8px; font-size: 14.5px; color: rgba(255,255,255,.92); }

/* App Store button */
.appstore-btn {
  display: inline-flex; align-items: center; gap: 12px;
  background: #000; color: #fff;
  padding: 11px 22px; border-radius: 14px;
  box-shadow: var(--shadow); transition: transform .12s, box-shadow .12s;
}
.appstore-btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.appstore-btn svg { width: 26px; height: 26px; fill: #fff; }
.appstore-btn span { display: flex; flex-direction: column; line-height: 1.15; text-align: left; }
.appstore-btn small { font-size: 11px; opacity: .85; }
.appstore-btn b { font-size: 18px; font-weight: 700; }
.appstore-btn.big { padding: 15px 30px; }
.appstore-btn.big svg { width: 30px; height: 30px; }
.appstore-btn.dark { background: var(--green-900); }

.ghost-btn {
  display: inline-flex; align-items: center;
  padding: 12px 22px; border-radius: 14px; font-weight: 700;
  background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.3); color: #fff;
  transition: background .15s;
}
.ghost-btn:hover { background: rgba(255,255,255,.22); }

/* Hero phone mockup */
.hero-visual { position: relative; display: flex; justify-content: center; }
.phone {
  position: relative; width: min(300px, 78vw); aspect-ratio: 9 / 18.5;
  background: #0c1f16; border-radius: 40px; padding: 12px;
  box-shadow: var(--shadow-lg), inset 0 0 0 2px rgba(255,255,255,.08);
}
.phone-notch { position: absolute; top: 14px; left: 50%; transform: translateX(-50%); width: 38%; height: 22px; background: #0c1f16; border-radius: 0 0 14px 14px; z-index: 3; }
.phone-shot {
  height: 100%; width: 100%; border-radius: 30px;
  object-fit: cover; object-position: top center;
  background: #0e2a1c;
}
/* Scan animation overlay — a single line sweeping the camera detection area at the top */
.phone-scan {
  position: absolute; top: 12px; left: 12px; right: 12px; height: 33%;
  border-radius: 30px 30px 0 0;
  overflow: hidden; pointer-events: none;
}
.scan-line {
  position: absolute; left: 0; right: 0; height: 3px; top: 0;
  background: linear-gradient(90deg, transparent, var(--gold-soft) 20%, var(--gold) 50%, var(--gold-soft) 80%, transparent);
  box-shadow: 0 0 14px 3px rgba(224,179,65,.7);
  animation: scan 2.6s cubic-bezier(.45,0,.55,1) infinite;
}
@keyframes scan {
  0%   { top: 0;    opacity: 0; }
  10%  { opacity: 1; }
  90%  { opacity: 1; }
  100% { top: 100%; opacity: 0; }
}
@media (prefers-reduced-motion: reduce) { .scan-line { animation: none; display: none; } }
.floating-icon { position: absolute; right: -6px; top: -22px; width: 86px; height: 86px; border-radius: 22px; box-shadow: var(--shadow-lg); transform: rotate(8deg); }

@media (max-width: 860px) {
  .hero-inner { grid-template-columns: 1fr; text-align: center; }
  .hero .lead { margin-inline: auto; }
  .hero-actions, .hero-badges { justify-content: center; }
  .hero-badges { justify-items: center; }
  .hero-visual { margin-top: 36px; }
  .floating-icon { width: 66px; height: 66px; }
}

/* ===== Sections ===== */
.section { max-width: var(--maxw); margin: auto; padding: clamp(56px, 8vw, 96px) clamp(16px, 4vw, 40px); }
.section-alt { max-width: none; background: var(--bg-alt); }
.section-alt > * { max-width: var(--maxw); margin-inline: auto; }
.section-head { text-align: center; margin-bottom: clamp(32px, 5vw, 56px); }
.section-head h2 { font-size: clamp(24px, 3.4vw, 36px); font-weight: 900; color: var(--green-900); }
.section-head p { margin-top: 12px; color: var(--muted); font-size: 16px; }

/* Feature grid */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.feature {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 24px; box-shadow: var(--shadow); transition: transform .15s, box-shadow .15s;
}
.feature:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.feature-ico {
  width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center;
  font-size: 26px; margin-bottom: 16px;
  background: linear-gradient(150deg, var(--green-700), var(--green-500));
  box-shadow: 0 8px 18px rgba(31,157,92,.3);
}
.feature h3 { font-size: 19px; margin-bottom: 8px; color: var(--green-900); }
.feature p { color: var(--muted); font-size: 15px; }
.feature strong { color: var(--ink); }
@media (max-width: 880px) { .feature-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .feature-grid { grid-template-columns: 1fr; } }

/* Steps */
.steps { display: flex; align-items: stretch; justify-content: center; gap: 18px; flex-wrap: wrap; }
.step { flex: 1 1 240px; max-width: 320px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px 24px; box-shadow: var(--shadow); text-align: center; }
.step-num { width: 44px; height: 44px; margin: 0 auto 14px; border-radius: 50%; display: grid; place-items: center; font-weight: 900; font-size: 20px; color: #fff; background: var(--green-800); box-shadow: 0 8px 16px rgba(15,81,50,.3); }
.step h3 { color: var(--green-900); margin-bottom: 8px; }
.step p { color: var(--muted); font-size: 15px; }
.step-arrow { align-self: center; font-size: 28px; color: var(--green-500); font-weight: 900; }
@media (max-width: 760px) { .step-arrow { transform: rotate(90deg); } }

/* Screenshots gallery */
.shots { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(22px, 4vw, 40px); }
.shot { display: flex; flex-direction: column; align-items: center; }
.shot img {
  width: 100%; max-width: 252px; margin-bottom: 16px;
  border-radius: 28px; border: 1px solid var(--line);
  background: #0e2a1c; box-shadow: var(--shadow-lg);
  transition: transform .18s, box-shadow .18s;
}
.shot:hover img { transform: translateY(-6px); }
.shot figcaption { color: var(--green-900); font-weight: 700; font-size: 15.5px; text-align: center; }
@media (max-width: 760px) { .shots { grid-template-columns: 1fr 1fr; } }
@media (max-width: 420px) { .shots { grid-template-columns: 1fr; } }

/* Highlight band */
.highlight {
  display: grid; grid-template-columns: 1.2fr .8fr; gap: clamp(24px, 4vw, 48px); align-items: center;
  background: linear-gradient(150deg, var(--green-800), var(--green-900));
  color: #fff; border-radius: 28px; padding: clamp(32px, 5vw, 56px);
  box-shadow: var(--shadow-lg);
}
.highlight h2 { font-size: clamp(22px, 3vw, 32px); font-weight: 900; }
.highlight p { margin: 16px 0 26px; color: rgba(255,255,255,.9); }
.highlight-stats { display: grid; gap: 14px; }
.stat { background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.18); border-radius: 16px; padding: 16px 20px; }
.stat b { display: block; font-size: 28px; font-weight: 900; color: var(--gold-soft); }
.stat span { font-size: 14px; color: rgba(255,255,255,.85); }
@media (max-width: 760px) { .highlight { grid-template-columns: 1fr; text-align: center; } .highlight .appstore-btn { margin-inline: auto; } }

/* FAQ */
.faq { max-width: 760px; margin: auto; display: grid; gap: 14px; }
.faq details {
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: 4px 20px; box-shadow: var(--shadow);
}
.faq summary {
  cursor: pointer; font-weight: 700; color: var(--green-900);
  padding: 16px 0; list-style: none; display: flex; justify-content: space-between; align-items: center;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "＋"; color: var(--green-500); font-weight: 900; transition: transform .2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq p { color: var(--muted); font-size: 15px; padding-bottom: 18px; }

/* Download CTA */
.download {
  text-align: center; padding: clamp(56px, 9vw, 100px) 20px;
  background:
    radial-gradient(700px 360px at 50% -20%, rgba(224,179,65,.22), transparent 60%),
    linear-gradient(160deg, var(--green-900), var(--green-700));
  color: #fff;
}
.download-icon { width: 96px; height: 96px; border-radius: 24px; margin: 0 auto 22px; box-shadow: var(--shadow-lg); }
.download h2 { font-size: clamp(26px, 4vw, 40px); font-weight: 900; }
.download p { margin: 12px 0 26px; color: rgba(255,255,255,.9); }
.download .appstore-btn { margin: 0 auto; }
.download-note { font-size: 12.5px; color: rgba(255,255,255,.6); margin-top: 18px; }

/* Footer */
.site-footer { background: var(--green-900); color: rgba(255,255,255,.78); padding: 40px 20px; text-align: center; }
.footer-brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; font-size: 18px; color: #fff; margin-bottom: 16px; }
.footer-brand img { width: 30px; height: 30px; border-radius: 8px; }
.footer-links { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px 22px; margin-bottom: 18px; }
.footer-links a { color: rgba(255,255,255,.8); font-size: 14.5px; }
.footer-links a:hover { color: var(--gold-soft); }
.copyright { font-size: 13px; color: rgba(255,255,255,.5); }

/* ===== Privacy page ===== */
.legal { max-width: 800px; margin: auto; padding: clamp(40px, 7vw, 80px) clamp(16px, 4vw, 32px); }
.legal h1 { font-size: clamp(26px, 4vw, 38px); font-weight: 900; color: var(--green-900); margin-bottom: 8px; }
.legal .updated { color: var(--muted); font-size: 14px; margin-bottom: 28px; }
.legal .card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 24px; margin-bottom: 18px; box-shadow: var(--shadow); }
.legal .card h2 { font-size: 19px; color: var(--green-800); margin-bottom: 10px; }
.legal .card p, .legal .card li { color: var(--muted); font-size: 15.5px; }
.legal .card ul { padding-left: 20px; }
.legal .back { display: inline-flex; align-items: center; gap: 6px; margin-top: 8px; font-weight: 700; color: var(--green-800); }
.legal .back:hover { color: var(--green-500); }