:root {
  --astro-primary: #6366f1;
  --astro-on-primary: #ffffff;
  --astro-bg-modal: #ffffff;
  --astro-header-bg: #1e1b4b;
  --astro-footer-bg: #0f172a;
  --astro-radius: 16px;
  --astro-transition: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.astrabook-custom-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: 'Space Grotesk', 'Inter', system-ui, sans-serif;
  font-weight: 700;
  font-size: 15px;
  padding: 13px 26px;
  border-radius: 10px;
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.25);
  transition: all var(--astro-transition);
}

.astrabook-custom-btn:hover {
  transform: translateY(-2px);
  filter: brightness(1.08);
  box-shadow: 0 6px 18px rgba(99, 102, 241, 0.35);
}

/* Modal overlays and modern responsive viewport structures */
.astro-modal-overlay {
  display: none;
  position: fixed;
  z-index: 999999;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background-color: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(8px);
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--astro-transition);
}

.astro-modal-overlay.active {
  display: flex;
  opacity: 1;
}

.astro-modal-box {
  width: 92%;
  max-width: 650px;
  background-color: var(--astro-bg-modal);
  border-radius: var(--astro-radius);
  box-shadow: 0 25px 60px rgba(0,0,0,0.4);
  border: 1px solid rgba(255,255,255,0.08);
  overflow: hidden;
  transform: translateY(15px) scale(0.97);
  transition: transform var(--astro-transition), opacity var(--astro-transition);
  color: #1e293b;
}

.astro-modal-overlay.active .astro-modal-box {
  transform: translateY(0) scale(1);
}

.astro-modal-header {
  background-color: var(--astro-header-bg);
  padding: 18px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #fff;
}

.astro-modal-title {
  margin: 0;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.astro-modal-close {
  background: none; border: none;
  color: rgba(255,255,255,0.8);
  font-size: 24px; cursor: pointer;
  transition: color var(--astro-transition);
}
.astro-modal-close:hover {
  color: #fff;
}

.astro-step-bar {
  display: flex;
  justify-content: space-between;
  background-color: rgba(0,0,0,0.03);
  padding: 12px 24px;
  border-bottom: 1px solid rgba(0,0,0,0.06);
}

.astro-step-indicator {
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  font-weight: 600;
  color: #94a3b8;
  display: flex;
  align-items: center;
  gap: 5px;
}

.astro-step-indicator.active {
  color: var(--astro-primary);
}

.astro-step-indicator.completed {
  color: #10b981;
}

.astro-modal-body {
  padding: 24px;
  max-height: 480px;
  overflow-y: auto;
  font-family: 'Inter', sans-serif;
}

.astro-step-view {
  display: none;
}

.astro-step-view.active {
  display: block;
}

.astro-slots-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
  gap: 8px;
  margin-top: 15px;
}

.astro-slot-badge {
  text-align: center;
  padding: 10px 6px;
  background-color: #f1f5f9;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease-out;
}

.astro-slot-badge.selected {
  background-color: var(--astro-primary);
  color: var(--astro-on-primary);
  border-color: var(--astro-primary);
  transform: translateY(-1px);
}

.astro-astrologer-card {
  display: flex;
  align-items: center;
  gap: 16px;
  border: 1.5px solid #e2e8f0;
  border-radius: 12px;
  padding: 14px;
  margin-bottom: 12px;
  cursor: pointer;
  transition: all 0.2s;
}

.astro-astrologer-card.selected {
  border-color: var(--astro-primary);
  background-color: rgba(99, 102, 241, 0.05);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.06);
}

.astro-astrologer-thumb {
  width: 50px; height: 50px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid #cbd5e1;
}

.astro-form-group {
  margin-bottom: 14px;
}
.astro-form-label {
  display: block;
  font-weight: 600;
  font-size: 12px;
  color: #475569;
  margin-bottom: 4px;
}

.astro-form-control {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid #cbd5e1;
  border-radius: 8px;
  font-size: 13.5px;
  outline: none;
  background-color: #fff;
  color: #1e293b;
  box-shadow: inset 0 1px 2px rgba(0,0,0,0.03);
  transition: border-color var(--astro-transition);
}
.astro-form-control:focus {
  border-color: var(--astro-primary);
}

.astro-modal-footer {
  background-color: var(--astro-footer-bg);
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}