:root {
  --surface: rgba(255, 255, 255, 0.78);
  --surface-border: rgba(28, 28, 28, 0.08);
  --text-main: #1a1a1a;
  --text-soft: rgba(26, 26, 26, 0.78);
  --text-muted: rgba(26, 26, 26, 0.54);
  --accent: #2d2d2d;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.08);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: "Manrope", sans-serif;
  color: var(--text-main);
  background: #f5f5f5;
}

img {
  display: block;
  max-width: 100%;
}

.page-shell {
  position: relative;
  min-height: 100vh;
  overflow: hidden;
  isolation: isolate;
}

.background-texture {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.74), rgba(255, 255, 255, 0.82)),
    url("assets/background.jpg") top left/cover no-repeat;
  opacity: 1;
  z-index: -5;
}

.hero {
  position: relative;
  z-index: 2;
  min-height: 100vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 48px 20px 120px;
}

.hero > * {
  max-width: 760px;
}

.hero-logo {
  margin: 0 auto 24px;
  width: min(320px, 72vw);
}

.hero-logo img {
  width: 100%;
  height: auto;
}

h1 {
  margin: 0;
  font-family: "Poppins", sans-serif;
  font-size: clamp(2.8rem, 9vw, 5.9rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: 0;
  text-wrap: balance;
}

.intro {
  margin: 22px auto 0;
  color: var(--text-soft);
  font-size: clamp(1rem, 2.2vw, 1.2rem);
  line-height: 1.8;
}

.countdown-card {
  margin-top: 38px;
  padding: clamp(20px, 4vw, 28px);
  border: 1px solid var(--surface-border);
  border-radius: 28px;
  background: var(--surface);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.countdown {
  display: grid;
  grid-template-columns: repeat(4, minmax(78px, 1fr));
  gap: clamp(12px, 2.2vw, 18px);
}

.time-block {
  padding: 18px 14px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(28, 28, 28, 0.06);
}

.time-value {
  display: block;
  font-family: "Poppins", sans-serif;
  font-size: clamp(1.8rem, 4.6vw, 3rem);
  font-weight: 800;
  line-height: 1;
}

.time-label {
  display: block;
  margin-top: 10px;
  color: var(--text-muted);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 720px) {
  .hero {
    padding-bottom: 96px;
  }

  .countdown {
    grid-template-columns: repeat(2, minmax(110px, 1fr));
  }
}

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

  .time-block {
    padding: 16px 10px;
  }
}