:root {
  --bg-dark: #08060a;
  --iron-frame: #111116;
  
  --font-serif: 'Cinzel', serif;
  --font-body: 'Playfair Display', serif;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--bg-dark);
  color: #fff;
  font-family: var(--font-body);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow-x: hidden;
  position: relative;
}

/* Background Cast Light Effect */
.light-cast {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background-color: rgba(255, 183, 0, 0.15); /* Starts as gold cast */
  filter: blur(90px);
  z-index: 1;
  pointer-events: none;
  transition: background-color 0.6s ease;
}

.cathedral-container {
  width: 90%;
  max-width: 950px;
  position: relative;
  z-index: 2;
  padding: 40px 0;
}

.cathedral-header {
  text-align: center;
  margin-bottom: 40px;
}

.nav-back {
  color: #8a8992;
  text-decoration: none;
  font-family: var(--font-serif);
  font-size: 0.85rem;
  letter-spacing: 2px;
  border: 1px solid #333;
  padding: 5px 12px;
  transition: color 0.2s, border-color 0.2s;
}

.nav-back:hover {
  color: #fff;
  border-color: #fff;
}

.cathedral-title {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 900;
  margin: 20px 0 0 0;
  letter-spacing: 4px;
  text-shadow: 0 0 10px rgba(255,255,255,0.1);
}

.cathedral-tagline {
  font-family: var(--font-serif);
  font-size: 0.8rem;
  letter-spacing: 3px;
  color: #9f8fb3;
  margin-top: 10px;
}

/* Gothic Window Arch layout */
.cathedral-window {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  background: var(--iron-frame);
  border: 8px solid var(--iron-frame);
  border-radius: 180px 180px 10px 10px / 100px 100px 10px 10px;
  box-shadow: 0 20px 50px rgba(0,0,0,0.7), 0 0 30px rgba(148, 0, 211, 0.1);
  overflow: hidden;
  padding: 15px;
}

/* Glass Pane items */
.pane {
  padding: 40px 30px;
  border: 6px solid var(--iron-frame);
  border-radius: 60px 60px 10px 10px;
  box-sizing: border-box;
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: transform 0.3s, background-color 0.4s, box-shadow 0.4s;
  cursor: pointer;
  display: flex;
  align-items: center;
}

.pane-content h2 {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  margin-top: 0;
  letter-spacing: 2px;
}

.pane-content p {
  font-size: 1.05rem;
  line-height: 1.75;
  font-style: italic;
}

/* Pane color modes */
.pane-violet {
  border-color: rgba(148, 0, 211, 0.4);
}
.pane-violet:hover, .pane-violet.active {
  background-color: rgba(148, 0, 211, 0.18);
  box-shadow: 0 0 25px rgba(148, 0, 211, 0.35), inset 0 0 15px rgba(148, 0, 211, 0.2);
}
.pane-violet h2 { color: #d896ff; text-shadow: 0 0 8px rgba(216,150,255,0.4); }

.pane-gold {
  border-color: rgba(255, 183, 0, 0.4);
}
.pane-gold:hover, .pane-gold.active {
  background-color: rgba(255, 183, 0, 0.18);
  box-shadow: 0 0 25px rgba(255, 183, 0, 0.35), inset 0 0 15px rgba(255, 183, 0, 0.2);
}
.pane-gold h2 { color: #ffdb70; text-shadow: 0 0 8px rgba(255,219,112,0.4); }

.pane-cyan {
  border-color: rgba(0, 206, 209, 0.4);
}
.pane-cyan:hover, .pane-cyan.active {
  background-color: rgba(0, 206, 209, 0.18);
  box-shadow: 0 0 25px rgba(0, 206, 209, 0.35), inset 0 0 15px rgba(0, 206, 209, 0.2);
}
.pane-cyan h2 { color: #8cffff; text-shadow: 0 0 8px rgba(140,255,255,0.4); }

.pane:hover {
  transform: scale(1.02);
}