:root {
  --railway-green: #1a4d2e;
  --railway-cream: #f5f5dc;
  --railway-wood: #4a3728;
  --flap-bg: #1a1a1a;
  --flap-text: #f5f5dc;
  --anim-speed: 0.6s;
  --bg-color: #121212;
}

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

body {
  background-color: var(--bg-color);
  background-image: radial-gradient(circle at center, #222, #000);
  font-family: 'Helvetica Neue', Arial, sans-serif;
  color: var(--railway-cream);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* UI Components */
.btn {
  background: var(--railway-wood);
  color: var(--railway-cream);
  border: none;
  padding: 10px 15px;
  border-radius: 4px;
  cursor: pointer;
  font-weight: bold;
  font-size: 1rem;
}
.btn:hover {
  background: #5c4533;
}
.btn:disabled {
  background: #555;
  cursor: not-allowed;
}

input, select {
  background: #333;
  color: #fff;
  border: 1px solid #555;
  padding: 8px;
  border-radius: 4px;
  font-size: 1rem;
}

/* Common Header */
.app-header {
  padding: 15px 20px;
  background: var(--railway-green);
  border-bottom: 4px solid var(--railway-wood);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.app-header h1 {
  font-size: 1.5rem;
  letter-spacing: 2px;
}
.nav-links a {
  color: var(--railway-cream);
  text-decoration: none;
  margin-left: 15px;
  font-size: 0.9rem;
}

/* Layouts */
.container {
  padding: 20px;
  flex: 1;
}

/* Ticket Print Styles */
@media print {
  body * {
    visibility: hidden;
  }
  #print-area, #print-area * {
    visibility: visible;
  }
  #print-area {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    margin: 0;
    padding: 0;
  }
  @page {
    margin: 0;
  }
}