:root {
  color-scheme: light;
  --bg: #f5f3ee;
  --surface: rgba(255, 255, 255, 0.58);
  --text: #20201e;
  --muted: #7b7973;
  --line: rgba(32, 32, 30, 0.12);
  --accent: #20201e;
  --shadow: 0 24px 70px rgba(50, 45, 35, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
}

body {
  min-height: 100vh;
  margin: 0;
  font-family: "Inter", "IBM Plex Sans Thai", system-ui, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(255,255,255,0.95), transparent 35%),
    radial-gradient(circle at bottom right, rgba(222,218,208,0.75), transparent 42%),
    var(--bg);
}

.page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.countdown-card {
  width: min(100%, 980px);
  padding: clamp(34px, 6vw, 72px);
  text-align: center;
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 32px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.28em;
}

h1 {
  margin: 0;
  font-family: "IBM Plex Sans Thai", "Inter", sans-serif;
  font-size: clamp(2rem, 6vw, 4.5rem);
  font-weight: 500;
  letter-spacing: -0.045em;
}

.subtitle {
  margin: 12px 0 42px;
  color: var(--muted);
  font-family: "IBM Plex Sans Thai", sans-serif;
  font-size: clamp(0.95rem, 2vw, 1.08rem);
  font-weight: 300;
}

.countdown {
  display: grid;
  grid-template-columns: minmax(110px, 1.35fr) auto minmax(82px, 1fr) auto minmax(82px, 1fr) auto minmax(82px, 1fr);
  align-items: start;
  gap: clamp(7px, 1.7vw, 22px);
}

.time-box {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 0;
}

.number {
  font-size: clamp(2.3rem, 8vw, 6.3rem);
  font-weight: 300;
  line-height: 0.95;
  letter-spacing: -0.065em;
  font-variant-numeric: tabular-nums;
}

.label {
  color: var(--muted);
  font-family: "IBM Plex Sans Thai", sans-serif;
  font-size: clamp(0.72rem, 1.6vw, 0.9rem);
}

.separator {
  padding-top: clamp(2px, 1vw, 10px);
  color: rgba(32, 32, 30, 0.28);
  font-size: clamp(2rem, 6vw, 5rem);
  font-weight: 300;
  line-height: 0.85;
}

.progress-wrap {
  margin-top: 52px;
}

.progress-track {
  height: 4px;
  overflow: hidden;
  background: var(--line);
  border-radius: 999px;
}

.progress-bar {
  width: 0%;
  height: 100%;
  background: var(--accent);
  border-radius: inherit;
  transition: width 0.6s ease;
}

.progress-text {
  margin: 12px 0 0;
  color: var(--muted);
  font-family: "IBM Plex Sans Thai", sans-serif;
  font-size: 0.82rem;
}

.finished-message {
  margin: 42px 0 0;
  font-family: "IBM Plex Sans Thai", sans-serif;
  font-size: clamp(1.4rem, 4vw, 2.1rem);
  font-weight: 500;
}

@media (max-width: 700px) {
  .page {
    align-items: center;
    padding: 16px;
  }

  .countdown-card {
    border-radius: 24px;
    padding: 40px 20px;
  }

  .subtitle {
    margin-bottom: 38px;
  }

  .countdown {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px 14px;
  }

  .separator {
    display: none;
  }

  .time-box {
    padding: 20px 10px;
    border: 1px solid var(--line);
    border-radius: 18px;
  }

  .number {
    font-size: clamp(2.7rem, 16vw, 4.4rem);
  }

  .progress-wrap {
    margin-top: 38px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .progress-bar {
    transition: none;
  }
}