:root {
  --bg-dark: #090B10;
  --bg-panel: rgba(18, 22, 36, 0.7);
  --bg-panel-heavy: rgba(18, 22, 36, 0.95);
  --neon-blue: #00E5FF;
  --neon-red: #FF0055;
  --text-main: #FFFFFF;
  --text-muted: #A0AABF;
  --text-dark: #121A2F;
  
  --border-radius: 12px;
  --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

body {
  font-family: 'Outfit', sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.6;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  padding-bottom: 100px; /* Space for total bar */
}

/* Background Glows */
.bg-glow {
  position: fixed;
  width: 50vw;
  height: 50vw;
  border-radius: 50%;
  filter: blur(150px);
  z-index: -1;
  opacity: 0.15;
  animation: float 10s infinite alternate ease-in-out;
}

.bg-blue {
  background: var(--neon-blue);
  top: -10%;
  left: -10%;
}

.bg-red {
  background: var(--neon-red);
  bottom: -10%;
  right: -10%;
  animation-delay: -5s;
}

@keyframes float {
  0% { transform: translateY(0) scale(1); }
  100% { transform: translateY(50px) scale(1.1); }
}

/* Layout */
.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 2rem;
}

/* Glass Panels */
.glass-panel {
  background: var(--bg-panel);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--border-radius);
  padding: 2rem;
  margin-bottom: 2rem;
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
  transition: var(--transition);
}

.glass-panel:hover {
  border-color: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
}

.glass-panel-heavy {
  background: var(--bg-panel-heavy);
  backdrop-filter: blur(25px);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Typography */
h1.glitch-text {
  font-size: 3rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 0.5rem;
  background: linear-gradient(90deg, var(--neon-blue), var(--neon-red));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  position: relative;
}

h2 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.subtitle {
  color: var(--text-muted);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto 1.5rem;
}

.section-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
}

.text-center { text-align: center; }
.hidden { display: none !important; }

/* Logo */
.site-logo {
  max-width: 150px;
  max-height: 150px;
  border-radius: 50%;
  margin-bottom: 1.5rem;
  box-shadow: 0 0 20px rgba(0,229,255,0.3);
  border: 2px solid rgba(255,255,255,0.1);
  object-fit: cover;
  animation: fadeIn 0.5s ease-out;
}

/* Colors & Neons */
.icon-blue { color: var(--neon-blue); text-shadow: 0 0 10px var(--neon-blue); }
.icon-red { color: var(--neon-red); text-shadow: 0 0 10px var(--neon-red); }
.neon-text-blue { color: var(--neon-blue); text-shadow: 0 0 8px rgba(0,229,255,0.6); font-weight: 800; }
.neon-text-red { color: var(--neon-red); text-shadow: 0 0 8px rgba(255,0,85,0.6); font-weight: 800; }

/* Social Links */
.social-container {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 1rem;
}

.social-link {
  color: var(--text-main);
  font-size: 1.5rem;
  transition: var(--transition);
  text-decoration: none;
  opacity: 0.8;
}

.social-link:hover {
  opacity: 1;
  color: var(--neon-blue);
  transform: scale(1.2);
  text-shadow: 0 0 10px var(--neon-blue);
}

/* Input Group */
.input-group {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

input[type="text"] {
  flex: 1;
  background: rgba(0,0,0,0.3);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 8px;
  padding: 1rem 1.5rem;
  color: white;
  font-size: 1.1rem;
  font-family: inherit;
  transition: var(--transition);
}

input[type="text"]:focus {
  outline: none;
  border-color: var(--neon-blue);
  box-shadow: 0 0 15px rgba(0,229,255,0.2);
  background: rgba(0,0,0,0.5);
}

/* Buttons */
.neon-btn {
  background: transparent;
  border: 2px solid var(--neon-blue);
  color: var(--neon-blue);
  padding: 1rem 2rem;
  font-family: inherit;
  font-size: 1.1rem;
  font-weight: 600;
  border-radius: 8px;
  cursor: pointer;
  transition: var(--transition);
  text-shadow: 0 0 5px var(--neon-blue);
  box-shadow: inset 0 0 10px rgba(0,229,255,0.1), 0 0 10px rgba(0,229,255,0.1);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  white-space: nowrap;
}

.neon-btn:hover {
  background: var(--neon-blue);
  color: var(--text-dark);
  box-shadow: 0 0 20px var(--neon-blue);
  text-shadow: none;
}

.neon-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  box-shadow: none;
  border-color: var(--text-muted);
  color: var(--text-muted);
}

/* Video Info */
.video-info {
  background: rgba(0,0,0,0.3);
  border-radius: 8px;
  padding: 1.5rem;
  border: 1px solid rgba(255,255,255,0.05);
  animation: fadeIn 0.4s ease-out;
}

.info-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.75rem;
  font-size: 1.1rem;
}

.info-row.highlight {
  font-size: 1.3rem;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px dashed rgba(255,255,255,0.1);
}

.yt-title {
  color: var(--neon-blue);
  font-weight: 600;
  max-width: 60%;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  text-align: right;
}

.help-text {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 1rem;
}

.error-msg {
  color: var(--neon-red);
  background: rgba(255,0,85,0.1);
  padding: 1rem;
  border-radius: 8px;
  border: 1px solid rgba(255,0,85,0.3);
  margin-top: 1rem;
  font-size: 0.95rem;
  animation: fadeIn 0.3s;
}

/* Options Grid */
.options-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  transition: opacity 0.3s;
}

.options-grid .glass-panel {
  margin-bottom: 0;
}

.disabled-until-fetch {
  opacity: 0.4;
  pointer-events: none;
  filter: grayscale(1);
}

/* Option Items (Radio / Checkbox) */
.option-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.option-item {
  display: flex;
  align-items: flex-start;
  padding: 1rem;
  background: rgba(0,0,0,0.2);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: 8px;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.option-item:hover {
  background: rgba(255,255,255,0.05);
  transform: translateX(4px);
}

.option-item input {
  display: none;
}

.option-content {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.option-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.25rem;
}

.option-name {
  font-weight: 600;
  font-size: 1.05rem;
}

.option-price {
  font-variant-numeric: tabular-nums;
  color: var(--neon-blue);
  font-weight: 800;
}

.option-description {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* Checkbox/Radio Indicator */
.indicator {
  width: 20px;
  height: 20px;
  border: 2px solid var(--text-muted);
  border-radius: 4px;
  margin-right: 1rem;
  margin-top: 2px;
  flex-shrink: 0;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

input[type="radio"] + .indicator {
  border-radius: 50%;
}

input:checked + .indicator {
  border-color: var(--neon-blue);
  background: rgba(0,229,255,0.2);
  box-shadow: 0 0 10px rgba(0,229,255,0.4);
}

input[type="radio"]:checked + .indicator::after {
  content: '';
  width: 10px;
  height: 10px;
  background: var(--neon-blue);
  border-radius: 50%;
}

input[type="checkbox"]:checked + .indicator::after {
  content: '✓';
  color: var(--neon-blue);
  font-size: 14px;
  font-weight: bold;
}

/* Glow Borders for Active Items */
.option-item.active {
  border-color: rgba(0,229,255,0.5);
  background: rgba(0,229,255,0.05);
}

/* Base vs Extra Highlights */
#base-difficulty-options .option-item.active {
  border-color: rgba(0,229,255,0.5);
}
#extra-difficulty-options .option-item.active {
  border-color: rgba(255,0,85,0.5);
}
#extra-difficulty-options input:checked + .indicator {
  border-color: var(--neon-red);
  background: rgba(255,0,85,0.2);
  box-shadow: 0 0 10px rgba(255,0,85,0.4);
}
#extra-difficulty-options input[type="checkbox"]:checked + .indicator::after {
  color: var(--neon-red);
}

/* Footer Section */
.footer-text {
  color: var(--text-muted);
  font-size: 0.9rem;
  opacity: 0.6;
  margin-top: 2rem;
  margin-bottom: 2rem;
}

/* Total Sticky Bar */
.total-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  padding: 1.5rem 2rem;
  z-index: 100;
  display: flex;
  justify-content: center;
  box-shadow: 0 -10px 40px rgba(0,0,0,0.8);
}

.total-content {
  max-width: 900px;
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.price-container {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.checkout-btn {
  font-size: 1rem;
  padding: 0.75rem 1.5rem;
  text-decoration: none;
  background: var(--neon-blue);
  color: var(--text-dark);
  border: none;
  box-shadow: 0 0 15px var(--neon-blue);
}

.checkout-btn:hover {
  background: white;
  color: var(--text-dark);
  box-shadow: 0 0 25px white;
}

.checkout-btn i {
  margin-right: 0.25rem;
}

.total-info {
  display: flex;
  flex-direction: column;
}

.selected-summary {
  font-size: 0.9rem;
  color: var(--text-muted);
  max-width: 500px;
  line-height: 1.3;
  margin-top: 0.25rem;
}

.discount-summary {
  font-size: 0.95rem;
  color: #00E676; /* Green for discount */
  font-weight: 600;
  margin-top: 0.2rem;
  animation: fadeIn 0.3s ease-out;
}

.total-label {
  font-size: 1.5rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.total-price {
  font-size: 2.5rem;
  font-variant-numeric: tabular-nums;
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Responsive */
@media (max-width: 768px) {
  .options-grid {
    grid-template-columns: 1fr;
  }
  
  .input-group {
    flex-direction: column;
  }
  
  .neon-btn {
    width: 100%;
    justify-content: center;
  }
  
  h1.glitch-text {
    font-size: 2rem;
  }

  .total-label {
    font-size: 1.2rem;
  }

  .total-price {
    font-size: 2rem;
  }
}