/* ====== K7UNI Logger Landing Page - Dark Theme ======
 * 
 * Landing page for selecting between HF and VHF logger instances
 * Matches the main logger dark theme aesthetic
 * 
 * Color Scheme:
 * - Primary Background: #0b0f14 (dark blue-gray)
 * - Card Background: #141a22 (lighter panels)
 * - Accent Blue: #4da3ff (bright blue for buttons/links)
 * - Text Colors: #e6eefb (primary), #a9b3c3 (muted)
 * 
 * ===================================================================== */

:root {
  --bg: #0b0f14;
  --fg: #e6eefb;
  --panel: #0e141b;
  --card: #141a22;
  --line: #223;
  --border: var(--line);
  --muted: #a9b3c3;
  --accent: #4da3ff;
  --accent-hover: #3498db;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  height: 100%;
  font-family: Arial, sans-serif;
  background: var(--bg);
  color: var(--fg);
}

body {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 20px;
  min-height: 100vh;
}

.landing-container {
  max-width: 800px;
  width: 100%;
  text-align: center;
}

.landing-header {
  margin-bottom: 3rem;
}

.landing-header h1 {
  font-size: 2.5rem;
  color: var(--fg);
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.landing-header p {
  font-size: 1.1rem;
  color: var(--muted);
  margin: 0;
}

.logger-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.logger-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 2rem;
  transition: all 0.3s ease;
  text-decoration: none;
  color: var(--fg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 320px;
}

.logger-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 8px 16px rgba(77, 163, 255, 0.2);
}

.logger-card-icon {
  font-size: 4rem;
  margin-bottom: 1rem;
  line-height: 1;
}

.logger-card h2 {
  font-size: 1.8rem;
  margin-bottom: 0.75rem;
  color: var(--fg);
}

.logger-card p {
  color: var(--muted);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
  line-height: 1.6;
  text-align: center;
}

.logger-card p strong {
  color: var(--fg);
  display: block;
  margin-bottom: 0.5rem;
}

.logger-card-button {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 0.75rem 2rem;
  border-radius: 4px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.3s ease;
}

.logger-card:hover .logger-card-button {
  background: var(--accent-hover);
}

.landing-footer {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
}

.landing-footer a {
  color: var(--accent);
  text-decoration: none;
}

.landing-footer a:hover {
  text-decoration: underline;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .landing-header h1 {
    font-size: 2rem;
  }
  
  .logger-cards {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .logger-card {
    min-height: 200px;
  }
}

@media (max-width: 480px) {
  .landing-header h1 {
    font-size: 1.75rem;
  }
  
  .landing-header p {
    font-size: 1rem;
  }
  
  .logger-card h2 {
    font-size: 1.5rem;
  }
}