/* Euroclass Books — Minimal, modern launch page styles */

:root {
  /* Palette inspired by logo: smoky white, soft grays, sky blue gradient, warm taupe gray */
  --bg: #f5f7f8; /* smoky white, avoids stark white */
  --text: #56606a; /* soft slate gray */
  --muted: #737b84; /* muted gray for secondary */
  --brand-gray: #8a8680; /* warm taupe gray from inner E */
  --accent-start: #9fd1ff; /* sky blue start */
  --accent-end: #e7f4ff;  /* lighter sky blue end */
  --value-bg-start: #edf7ff; /* soft sky tint behind numbers */
  --value-bg-end: #dff0ff;   /* slightly deeper tint */
  --card-bg: #ffffff18;   /* translucent card over smoky bg */
  --card-border: #1d2a3520; /* subtle border */
  --shadow: 0 10px 25px rgba(45, 58, 70, 0.08);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "SF Pro Text", "SF Pro Display", sans-serif;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  display: grid;
  grid-template-rows: auto 1fr auto;
  min-height: 100dvh;
}

.background {
  position: fixed;
  inset: -20vh -10vw -20vh -10vw;
  background:
    radial-gradient(1200px 500px at 10% 20%, var(--accent-end) 0%, transparent 60%),
    radial-gradient(800px 400px at 80% 10%, var(--accent-start) 0%, transparent 65%),
    radial-gradient(900px 450px at 60% 85%, color-mix(in oklab, var(--bg) 70%, #ffffff) 0%, transparent 65%);
  filter: blur(40px) saturate(105%);
  opacity: 0.55;
  pointer-events: none;
}

.site-header {
  max-width: 1100px;
  margin: 24px auto 0;
  padding: 16px 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 16px;
}

.logo {
  width: clamp(64px, 8vw, 84px);
  height: auto;
  filter: drop-shadow(0 4px 12px rgba(55, 80, 100, 0.15));
}

.brand-text { display: grid; gap: 2px; }
.brand-name {
  margin: 0;
  font-weight: 600;
  letter-spacing: 0.2px;
}
.brand-tagline {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.hero {
  max-width: 980px;
  margin: 48px auto;
  padding: 24px;
  text-align: center;
}

.heading {
  margin: 16px auto 24px;
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  line-height: 1.15;
  letter-spacing: 0.5px;
}

.countdown {
  display: grid;
  grid-template-columns: repeat(4, minmax(120px, 1fr));
  gap: clamp(12px, 3vw, 18px);
  align-items: stretch;
  justify-items: center;
  padding: 16px 0 8px;
}

.unit {
  width: 100%;
  background: linear-gradient(180deg, var(--value-bg-start), var(--value-bg-end));
  border: 1px solid #9fd1ff40;
  border-radius: 16px;
  box-shadow: inset 0 1px 2px rgba(255, 255, 255, 0.6), 0 6px 14px rgba(140, 170, 200, 0.12);
  padding: 18px 16px 16px;
}

.value {
  display: block;
  font-variant-numeric: tabular-nums lining-nums;
  font-feature-settings: "tnum" 1, "lnum" 1;
  font-size: clamp(2rem, 6vw, 3rem);
  font-weight: 600;
  color: #44515a;
}

.label {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  font-size: 0.9rem;
  letter-spacing: 0.8px;
  text-transform: uppercase;
}

.subtext {
  max-width: 640px;
  margin: 22px auto 0;
  color: var(--muted);
}

.actions { margin-top: 28px; }
.button {
  display: inline-block;
  padding: 12px 18px;
  border-radius: 12px;
  color: #2a4050;
  text-decoration: none;
  border: 1px solid #9fb9ca40;
  background: linear-gradient(120deg, var(--accent-end), var(--accent-start));
  box-shadow: 0 6px 16px rgba(70, 110, 140, 0.18);
}
.button:hover { filter: saturate(110%); }

.site-footer {
  max-width: 1100px;
  margin: 0 auto 24px;
  padding: 12px 24px;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.social { display: flex; gap: 10px; }
.social-link {
  color: var(--brand-gray);
  padding: 8px;
  border-radius: 10px;
  background: #ffffff10;
  border: 1px solid var(--card-border);
}

@media (max-width: 760px) {
  .countdown { grid-template-columns: repeat(2, minmax(140px, 1fr)); }
  .brand { justify-content: center; }
  .footer-inner { flex-direction: column; }
}

@media (max-width: 420px) {
  .countdown { grid-template-columns: 1fr; }
}