/* Game of FLIP website. Palette: red canvas, white surfaces, dark text, red accents. */

/* Self-hosted display font (no external requests, privacy-consistent). */
@font-face {
  font-family: "Londrina Solid";
  src: url("fonts/LondrinaSolid-Regular.ttf") format("truetype");
  font-weight: 400 900;
  font-style: normal;
  font-display: swap;
}

:root {
  --red: #e1251b;          /* brand red (matches in-app MAIN BUTTON) = page canvas */
  --red-deep: #c2150c;     /* deeper red for links / small text on white (AA contrast) */
  --red-ink: #8c0f08;      /* darkest red for strong accents */
  --white: #ffffff;
  --ink: #23201f;          /* body text on white */
  --ink-soft: #5d5653;     /* secondary text on white */
  --tint: #fff4f3;         /* very light red tint for lead/highlight blocks */
  --line: #f0dada;         /* hairline on white surfaces */
  --max: 980px;
  --shadow: 0 14px 34px rgba(60, 0, 0, 0.18);
  --shadow-sm: 0 6px 18px rgba(60, 0, 0, 0.12);
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Avenir Next", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Helvetica, Arial, sans-serif;
  color: var(--white);
  line-height: 1.65;
  min-height: 100vh;
  background:
    radial-gradient(1200px 620px at 50% -8%, rgba(255, 102, 92, 0.38), rgba(255, 102, 92, 0) 60%),
    linear-gradient(180deg, #e1251b 0%, #b9130b 58%, #8f0d07 100%) fixed;
  background-color: #b9130b;
}

.display { font-family: "Londrina Solid", Impact, sans-serif; font-weight: 900; }

a { color: var(--white); text-decoration: underline; text-underline-offset: 2px; }
a:hover { opacity: 0.82; }

/* ---------- Nav (blends with the red canvas) ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 24px;
  background: rgba(225, 37, 27, 0.82);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.22);
}
.nav .brand {
  font-family: "Londrina Solid", Impact, sans-serif;
  font-size: 1.5rem;
  letter-spacing: 1.5px;
  color: var(--white);
}
.nav .links { display: flex; gap: 22px; flex-wrap: wrap; font-size: 0.98rem; }
.nav .links a { color: rgba(255, 255, 255, 0.9); text-decoration: none; }
.nav .links a:hover { color: var(--white); opacity: 1; }

/* ---------- Layout ---------- */
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }
section { padding: 50px 0; }

/* ---------- Hero ---------- */
.hero { text-align: center; padding: 80px 24px 60px; }
.hero .logo {
  width: min(248px, 64vw);
  height: auto;
  margin: 0 auto 26px;
  display: block;
  filter: drop-shadow(0 10px 22px rgba(0, 0, 0, 0.32));
}
.hero .subtitle {
  font-family: "Londrina Solid", Impact, sans-serif;
  font-size: clamp(1.5rem, 5vw, 2.5rem);
  color: var(--white);
  margin: 0 0 20px;
  letter-spacing: 1px;
}
.hero p {
  max-width: 600px;
  margin: 0 auto 32px;
  color: #fff;
  font-size: 1.12rem;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  font-family: "Londrina Solid", Impact, sans-serif;
  font-size: 1.2rem;
  letter-spacing: 0.5px;
  padding: 15px 32px;
  border-radius: 14px;
  border: none;
  cursor: pointer;
  color: var(--red);
  background: var(--white);
  text-decoration: none;
  box-shadow: var(--shadow-sm);
  transition: transform 0.1s ease, box-shadow 0.1s ease, background 0.15s ease;
}
.btn:hover { background: #fff; opacity: 1; transform: translateY(-2px); box-shadow: var(--shadow); }
.btn:active { transform: translateY(0); }
.btn.outline {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255, 255, 255, 0.8);
  box-shadow: none;
  padding: 13px 30px;
}
.btn.outline:hover { background: rgba(255, 255, 255, 0.14); }
.btn-row { display: flex; gap: 16px; flex-wrap: wrap; justify-content: center; }

/* ---------- Safety warning (white card, red accent) ---------- */
.warning {
  background: var(--white);
  border-left: 6px solid var(--red);
  border-radius: 16px;
  padding: 24px 26px;
  margin: 8px auto 0;
  max-width: var(--max);
  color: var(--ink);
  box-shadow: var(--shadow);
}
.warning .label {
  font-family: "Londrina Solid", Impact, sans-serif;
  font-size: 1.4rem;
  color: var(--red);
  display: block;
  margin-bottom: 8px;
  letter-spacing: 0.5px;
}
.warning strong { color: var(--red-ink); }
.warning a { color: var(--red-deep); text-decoration: underline; }

/* ---------- Section headings (on red canvas) ---------- */
h2.section-title {
  font-family: "Londrina Solid", Impact, sans-serif;
  font-size: clamp(1.9rem, 5vw, 2.7rem);
  color: var(--white);
  margin: 0 0 22px;
  letter-spacing: 0.5px;
}
h2.section-title::after {
  content: "";
  display: block;
  width: 64px;
  height: 4px;
  margin-top: 10px;
  background: rgba(255, 255, 255, 0.85);
  border-radius: 3px;
}
section > .wrap > p { color: #fff; font-size: 1.05rem; max-width: 760px; }

/* ---------- Cards (solid white) ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 18px;
}
.card {
  background: var(--white);
  border-radius: 18px;
  padding: 24px;
  color: var(--ink);
  box-shadow: var(--shadow-sm);
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.card h3 {
  font-family: "Londrina Solid", Impact, sans-serif;
  color: var(--red);
  margin: 0 0 8px;
  font-size: 1.5rem;
  letter-spacing: 0.5px;
}
.card p { margin: 0; color: var(--ink-soft); font-size: 0.98rem; }

/* ---------- Legal pages (white sheet, dark text) ---------- */
.doc {
  background: var(--white);
  border-radius: 20px;
  padding: 40px clamp(22px, 5vw, 56px);
  margin: 40px auto 60px;
  max-width: var(--max);
  color: var(--ink);
  box-shadow: var(--shadow);
}
.doc h1 {
  font-family: "Londrina Solid", Impact, sans-serif;
  font-size: clamp(2.2rem, 6vw, 3.2rem);
  color: var(--red);
  margin: 0 0 4px;
}
.doc .updated { color: var(--ink-soft); font-size: 0.92rem; margin: 0 0 28px; }
.doc h2 {
  font-family: "Londrina Solid", Impact, sans-serif;
  color: var(--ink);
  font-size: 1.5rem;
  margin: 32px 0 8px;
  letter-spacing: 0.3px;
  padding-left: 14px;
  border-left: 4px solid var(--red);
}
.doc p, .doc li { color: var(--ink); }
.doc ul { padding-left: 24px; }
.doc li { margin-bottom: 8px; }
.doc a { color: var(--red-deep); text-decoration: underline; }
.doc .lead {
  font-size: 1.06rem;
  color: var(--ink);
  background: var(--tint);
  border-left: 4px solid var(--red);
  padding: 18px 22px;
  border-radius: 12px;
}
.doc .back { display: inline-block; margin-bottom: 12px; font-size: 0.95rem; color: var(--red-deep); text-decoration: none; font-weight: 600; }
.doc .back:hover { text-decoration: underline; }

/* ---------- Footer ---------- */
footer {
  border-top: 1px solid rgba(255, 255, 255, 0.22);
  padding: 36px 24px 56px;
  text-align: center;
  color: rgba(255, 255, 255, 0.88);
  font-size: 0.92rem;
}
footer .foot-links { margin-bottom: 12px; display: flex; gap: 22px; justify-content: center; flex-wrap: wrap; }
footer .foot-links a { color: #fff; text-decoration: none; }
footer .foot-links a:hover { opacity: 0.82; }

/* ---------- Responsive ---------- */
@media (max-width: 560px) {
  .nav { flex-direction: column; align-items: flex-start; gap: 10px; }
  section { padding: 36px 0; }
  .hero { padding: 56px 22px 44px; }
}