:root {
  --bg: #f4f7fb;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #4b5563;
  --accent: #0f4c81;
  --accent-dark: #0b3a61;
  --border: #dbe4ee;
  --shadow: 0 18px 50px rgba(15, 23, 42, 0.12);
}

* {
  box-sizing: border-box;
}

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

body {
  font-family: Arial, Helvetica, sans-serif;
  background:
    linear-gradient(135deg, rgba(15, 76, 129, 0.08), rgba(15, 76, 129, 0.02)),
    var(--bg);
  color: var(--text);
  display: grid;
  place-items: center;
  padding: 24px;
}

.notice-card {
  width: 100%;
  max-width: 780px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: 40px;
}

.badge {
  display: inline-block;
  background: rgba(15, 76, 129, 0.1);
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 8px 12px;
  border-radius: 999px;
  margin-bottom: 18px;
}

h1 {
  margin: 0 0 18px;
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  line-height: 1.15;
  color: var(--accent-dark);
}

p {
  font-size: 1.05rem;
  line-height: 1.7;
  margin: 0 0 18px;
  color: var(--muted);
}

.info-box {
  margin-top: 26px;
  padding: 22px;
  border: 1px solid var(--border);
  border-left: 5px solid var(--accent);
  border-radius: 14px;
  background: #f8fbfe;
}

.info-box p {
  margin-bottom: 14px;
  color: var(--text);
  font-weight: 600;
}

.button {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  padding: 14px 20px;
  border-radius: 10px;
  font-weight: 700;
  transition: background 0.2s ease, transform 0.2s ease;
  word-break: break-word;
}

.button:hover,
.button:focus {
  background: var(--accent-dark);
  transform: translateY(-1px);
}

.small-text {
  margin-top: 18px;
  font-size: 0.95rem;
  color: #6b7280;
}

#count_down {
    text-align: center;
}

@media (max-width: 640px) {
  .notice-card {
    padding: 24px;
    border-radius: 14px;
  }

  .button {
    width: 100%;
    text-align: center;
  }
}