:root {
  --bg-primary: #0a0f14;
  --bg-secondary: #0f1419;
  --bg-card: rgba(255, 255, 255, 0.02);
  --bg-card-hover: rgba(255, 255, 255, 0.04);
  --accent: #4ade80;
  --accent-glow: rgba(74, 222, 128, 0.15);
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border: rgba(255, 255, 255, 0.06);
  --warning: #ef4444;
  --success: #10b981;
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.37);
  --radius: 16px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);

  --asia-color: #f59e0b;
  --london-color: #3b82f6;
  --newyork-color: #ef4444;
  --overlap-color: #8b5cf6;

  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

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

html,
body {
  height: 100%;
  width: 100%;
}

body {
  background: radial-gradient(
      ellipse 80% 50% at 50% -20%,
      rgba(74, 222, 128, 0.05),
      transparent
    ),
    linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  color: var(--text-primary);
  min-height: 100vh;
  width: 100%;
  padding: 2rem;
  line-height: 1.6;
  overflow-x: hidden;
}

.header {
  text-align: center;
  margin-bottom: 2rem;
  width: 100%;
}

#ruleHeadingTop {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent), #22c55e);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  transition: var(--transition);
  margin: 0;
  letter-spacing: -0.025em;
}

/* Fixed Container Layout */
.container {
  width: 97%;
  max-width: none;
  display: grid;
  grid-template-columns: 45% 55%;
  gap: 2rem;
  height: calc(100vh - 200px);
  min-height: 600px;
}

.card {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--glass-shadow);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.5;
}

/* Sessions Card */
.sessions-card {
  display: flex;
  flex-direction: column;
}

.card-header {
  margin-bottom: 1.5rem;
  flex-shrink: 0;
}

.card-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 0 0.5rem 0;
  color: var(--text-primary);
  letter-spacing: -0.025em;
}

.card-subtitle {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin: 0;
}

.current-time {
  text-align: center;
  padding: 1.5rem;
  background: linear-gradient(135deg, var(--bg-card), var(--bg-card-hover));
  border-radius: 12px;
  border: 1px solid var(--border);
  margin-bottom: 1.5rem;
  flex-shrink: 0;
}

.time-display {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
  font-variant-numeric: tabular-nums;
}

.date-display {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-top: 0.5rem;
}

.sessions-grid {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  flex-grow: 1;
}

.session-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.session-item.active {
  border-color: var(--accent);
  background: linear-gradient(135deg, var(--accent-glow), transparent);
  box-shadow: 0 0 20px var(--accent-glow);
  transform: translateY(-2px);
}

.session-item.overlap {
  border-color: var(--overlap-color);
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.1), transparent);
  box-shadow: 0 0 20px rgba(139, 92, 246, 0.2);
}

.session-item.inactive {
  opacity: 0.6;
  text-decoration: line-through;
}

.session-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--border);
  transition: var(--transition);
}

.session-item.active.asia::before {
  background: var(--asia-color);
}
.session-item.active.london::before {
  background: var(--london-color);
}
.session-item.active.newyork::before {
  background: var(--newyork-color);
}
.session-item.overlap::before {
  background: var(--overlap-color);
}

.session-info {
  display: flex;
  flex-direction: column;
  flex-grow: 1;
  margin-left: 1rem;
}

.session-name {
  font-weight: 600;
  font-size: 1rem;
  color: var(--text-primary);
  margin: 0;
}

.session-time {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin: 0;
  font-variant-numeric: tabular-nums;
}

.session-status {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border);
  transition: var(--transition);
}

.session-item.active .status-dot,
.session-item.overlap .status-dot {
  animation: pulse-dot 2s infinite;
}

.overlap-indicator {
  margin-top: 1rem;
  padding: 1rem;
  background: rgba(139, 92, 246, 0.05);
  border: 1px solid rgba(139, 92, 246, 0.2);
  border-radius: 12px;
  font-size: 0.875rem;
  color: var(--overlap-color);
  text-align: center;
  font-weight: 600;
  opacity: 0;
  transform: translateY(-10px);
  transition: var(--transition);
  flex-shrink: 0;
}

.overlap-indicator.show {
  opacity: 1;
  transform: translateY(0);
}

/* Trading Checklist Card */
.checklist-card {
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

.tasks-container {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.tasks {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  flex-grow: 1;
  padding-right: 0.5rem;
}

.task {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1rem;
  border-radius: 12px;
  transition: var(--transition);
  border: 1px solid transparent;
}

.task:hover {
  background: var(--bg-card-hover);
  border-color: var(--border);
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.task-checkbox {
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 8px;
  border: 2px solid var(--border);
  background: transparent;
  cursor: pointer;
  position: relative;
  transition: var(--transition);
  flex-shrink: 0;
  margin-top: 2px;
}

.task-checkbox:hover {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-glow);
}

.task-checkbox:checked {
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-glow);
}

.task-checkbox::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 6px;
  width: 4px;
  height: 8px;
  border: 2px solid transparent;
  border-right-color: white;
  border-bottom-color: white;
  transform: rotate(45deg) scale(0);
  transition: transform 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.task-checkbox:checked::after {
  transform: rotate(45deg) scale(1);
}

.task-label {
  cursor: pointer;
  user-select: none;
  color: var(--text-primary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition);
  flex-grow: 1;
  line-height: 1.5;
}

.task-label.completed {
  color: var(--text-muted);
  text-decoration: line-through;
}

/* Progress Section */
.stats-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  flex-shrink: 0;
}

.progress-circle {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  background: var(--bg-secondary);
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.progress-circle:hover {
  transform: scale(1.05);
}

.progress-svg {
  position: absolute;
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
  transition: var(--transition);
}

.progress-bg {
  fill: none;
  stroke: var(--border);
  stroke-width: 8;
}

.progress-fill {
  fill: none;
  stroke: var(--accent);
  stroke-width: 8;
  stroke-linecap: round;
  stroke-dasharray: 565.48;
  stroke-dashoffset: 565.48;
  transition: stroke-dashoffset 0.8s cubic-bezier(0.4, 0, 0.2, 1);
  filter: drop-shadow(0 0 8px var(--accent-glow));
}

.progress-inner {
  width: 130px;
  height: 130px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--bg-secondary), var(--bg-primary));
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  z-index: 1;
}

.progress-text {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--text-primary);
  margin: 0;
  letter-spacing: -0.05em;
  transition: var(--transition);
}

.progress-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-top: 0.25rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.action-buttons {
  display: flex;
  gap: 1rem;
  width: 100%;
  max-width: 280px;
}

.btn {
  flex: 1;
  background: transparent;
  border: 1px solid var(--border);
  padding: 0.75rem 1.25rem;
  border-radius: 12px;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.1),
    transparent
  );
  transition: left 0.5s;
}

.btn:hover {
  border-color: var(--accent);
  color: var(--text-primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.btn:hover::before {
  left: 100%;
}

.btn.primary {
  background: linear-gradient(135deg, var(--accent), #17a94c);
  border-color: var(--accent);
  color: white;
}

.btn.primary:hover {
  box-shadow: 0 4px 25px var(--accent-glow);
  transform: translateY(-3px);
}

.status-message {
  padding: 1rem 1.5rem;
  border-radius: 12px;
  font-size: 0.875rem;
  font-weight: 600;
  text-align: center;
  margin-top: 1rem;
  opacity: 0;
  transform: translateY(-10px);
  transition: var(--transition);
}

.status-message.success {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.2);
  color: var(--success);
}

.status-message.warning {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.2);
  color: var(--warning);
}

.status-message.show {
  opacity: 1;
  transform: translateY(0);
}

.meta-info {
  display: flex;
  justify-content: center;
  gap: 2rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.meta-number {
  color: var(--accent);
  font-weight: 700;
}

/* Animations */
@keyframes pulse-dot {
  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.7;
    transform: scale(1.3);
  }
}

/* Mobile Responsiveness */
@media (max-width: 1024px) {
  .container {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    height: auto;
    min-height: auto;
  }

  .card {
    height: auto;
  }

  .tasks {
    overflow-y: visible;
  }
}

@media (max-width: 768px) {
  body {
    padding: 1rem;
  }

  .card {
    padding: 1.5rem;
  }

  .action-buttons {
    flex-direction: column;
  }

  .time-display {
    font-size: 1.6rem;
  }

  .task {
    padding: 0.75rem;
  }

  .meta-info {
    gap: 1rem;
  }

  .progress-circle {
    width: 150px;
    height: 150px;
  }

  .progress-inner {
    width: 110px;
    height: 110px;
  }

  .progress-text {
    font-size: 1.8rem;
  }
}

@media (max-width: 480px) {
  .session-item {
    padding: 1rem;
  }

  .task-label {
    font-size: 0.85rem;
  }

  .progress-circle {
    width: 130px;
    height: 130px;
  }

  .progress-inner {
    width: 95px;
    height: 95px;
  }

  .progress-text {
    font-size: 1.6rem;
  }
}