/* ============================================================
   Poker Ryu — Marketing Site Shared Stylesheet
   ============================================================ */

/* ── Google Fonts ── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Noto+Serif+JP:wght@400;700&display=swap');

/* ── Design Tokens ── */
:root {
  --color-primary:       #1F8A4C;
  --color-primary-press: #17703D;
  --color-primary-soft:  #D7F2E3;
  --color-vermilion:     #C53D2F;
  --color-gold:          #B8960C;
  --color-ink:           #1A1A1A;
  --color-paper:         #F3F1EA;
  --color-bg:            #E8EDEF;
  --color-surface:       #F5F3F0;
  --color-border:        #D1CCC4;
  --color-text:          #2C2C2C;
  --color-muted:         #6B7280;
  --color-white:         #FFFFFF;
  --color-accent-blue:       #1789C7;
  --color-accent-blue-press: #0F6FA6;
  --color-accent-blue-soft:  #D7EEFB;
  --color-danger:            #EF4444;
  --color-warning:           #F59E0B;
  --color-surface-alt:       #ECE9E4;
  --color-mist:              #CBD5D8;

  --font-sans:  'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-serif: 'Noto Serif JP', Georgia, serif;

  --radius-sm:  8px;
  --radius-md:  12px;
  --radius-lg:  20px;

  --max-w:      1120px;
  --section-px: clamp(20px, 5vw, 80px);
  --section-py: clamp(56px, 8vw, 96px);
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: var(--color-paper);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }

/* ── Container ── */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--section-px);
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: opacity 0.15s, background 0.15s, transform 0.1s;
  text-decoration: none;
  white-space: nowrap;
}
.btn:hover  { opacity: 0.88; }
.btn:active { transform: scale(0.97); }

.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
}
.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}
.btn-outline:hover { background: var(--color-primary-soft); }
.btn-disabled {
  background: var(--color-border);
  color: var(--color-muted);
  cursor: not-allowed;
  pointer-events: none;
}
.btn-lg {
  padding: 17px 36px;
  font-size: 16px;
  border-radius: var(--radius-md);
}

/* ── Nav Header ── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(243, 241, 234, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 24px;
}
.header-logo img {
  height: 36px;
  width: auto;
}
.header-nav {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}
.header-nav a {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-muted);
  transition: color 0.15s;
}
.header-nav a:hover { color: var(--color-ink); }
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.header-cta {
  padding: 10px 20px;
  font-size: 14px;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 101;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-ink);
  border-radius: 2px;
  transition: transform 0.25s, opacity 0.25s;
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
  display: none;
  position: fixed;
  inset: 64px 0 0 0;
  background: var(--color-paper);
  padding: 32px var(--section-px);
  flex-direction: column;
  gap: 24px;
  z-index: 99;
  border-top: 1px solid var(--color-border);
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-ink);
}

@media (max-width: 768px) {
  .header-nav, .header-actions { display: none; }
  .hamburger { display: flex; }
}

/* ── Footer ── */
.site-footer {
  background: var(--color-ink);
  color: rgba(255,255,255,0.6);
  padding: 40px var(--section-px);
}
.site-footer .container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  text-align: center;
}
.footer-logo img {
  height: 32px;
  width: auto;
  opacity: 0.85;
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 6px 24px;
  list-style: none;
}
.footer-links a {
  font-size: 13px;
  color: rgba(255,255,255,0.55);
  transition: color 0.15s;
}
.footer-links a:hover { color: #fff; }
.footer-copy {
  font-size: 12px;
  color: rgba(255,255,255,0.35);
}

/* ── Section layout ── */
.section {
  padding: var(--section-py) var(--section-px);
}
.section-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 12px;
}
.section-title {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800;
  color: var(--color-ink);
  line-height: 1.15;
  margin-bottom: 16px;
}
.section-sub {
  font-size: 17px;
  color: var(--color-muted);
  max-width: 560px;
  line-height: 1.65;
}

/* ── Card grid ── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
  margin-top: 48px;
}
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
}
.card-icon {
  font-size: 32px;
  margin-bottom: 16px;
}
.card-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 8px;
}
.card-body {
  font-size: 15px;
  color: var(--color-muted);
  line-height: 1.6;
}

/* ── Prose pages (Privacy / Terms / Contact) ── */
.prose-page {
  padding: 64px var(--section-px) 96px;
}
.prose-page .container {
  max-width: 680px;
}
.prose-page .back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--color-muted);
  margin-bottom: 40px;
  transition: color 0.15s;
}
.prose-page .back-link:hover { color: var(--color-ink); }
.prose-page h1 {
  font-size: clamp(26px, 4vw, 36px);
  font-weight: 800;
  color: var(--color-ink);
  margin-bottom: 8px;
}
.prose-page .effective {
  font-size: 14px;
  color: var(--color-muted);
  margin-bottom: 36px;
}
.prose-page h2 {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-ink);
  margin: 36px 0 8px;
}
.prose-page p {
  font-size: 15px;
  color: #444;
  margin-bottom: 14px;
  line-height: 1.7;
}
.prose-page ul {
  font-size: 15px;
  color: #444;
  margin: 0 0 14px;
  padding-left: 24px;
}
.prose-page ul li { margin-bottom: 5px; }
.prose-page a { color: var(--color-primary); text-decoration: underline; text-underline-offset: 2px; }
.prose-page a:hover { color: var(--color-primary-press); }
.prose-divider { border: none; border-top: 1px solid var(--color-border); margin: 36px 0; }