/* Telegraph Bay Tides & Charts Menu - Dark Mode */
:root {
  --bg: #020617;
  --bg-elevated: #0b1220;
  --accent: #38bdf8;
  --accent-soft: rgba(56, 189, 248, 0.16);
  --text: #e5e7eb;
  --muted: #9ca3af;
  --border: #1f2937;
  --radius: 0.8rem;
  --shadow: 0 18px 45px rgba(0, 0, 0, 0.7);
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  min-height: 100vh;
  display: flex;
  align-items: stretch;
  justify-content: center;
  padding: 24px;
  background:
    radial-gradient(circle at top, rgba(30, 64, 175, 0.45), transparent 55%),
    radial-gradient(circle at bottom, rgba(15, 118, 110, 0.35), transparent 55%),
    var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
}

.page {
  width: 100%;
  max-width: 720px;
  margin: auto;
  padding: 24px 20px 26px;
  border-radius: 1.4rem;
  border: 1px solid rgba(148, 163, 184, 0.25);
  background: linear-gradient(140deg, rgba(15, 23, 42, 0.96), rgba(15, 23, 42, 0.9), rgba(8, 47, 73, 0.95));
  box-shadow: var(--shadow);
}

.header {
  text-align: center;
  margin-bottom: 18px;
}

.header h1 {
  margin: 0 0 6px;
  font-size: 1.85rem;
  letter-spacing: 0.04em;
}

.header p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--muted);
}

.menu {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 16px 0 18px;
}

.menu-button {
  display: block;
  width: 100%;
  padding: 12px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: rgba(15, 23, 42, 0.96);
  color: var(--text);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  line-height: 1.35;
  transition:
    background 0.16s ease-out,
    transform 0.08s ease-out,
    box-shadow 0.16s ease-out,
    border-color 0.16s ease-out,
    color 0.16s ease-out;
}

.menu-button .label-main {
  display: block;
}

.menu-button .label-sub {
  display: block;
  margin-top: 2px;
  font-size: 0.8rem;
  color: var(--muted);
}

.menu-button:hover,
.menu-button:focus-visible {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: #f9fafb;
  transform: translateY(-1px);
  box-shadow: 0 14px 30px rgba(15, 23, 42, 0.9);
  outline: none;
}

.menu-button:active {
  transform: translateY(0);
  box-shadow: none;
}

.footer {
  margin-top: 10px;
  text-align: right;
  font-size: 0.78rem;
  color: var(--muted);
}

/* Responsive tweaks */
@media (max-width: 600px) {
  body {
    padding: 16px;
  }

  .page {
    padding: 18px 14px 22px;
    border-radius: 1.1rem;
  }

  .header h1 {
    font-size: 1.5rem;
  }
}