/* ============================================
   Aether Studio — Component: Modal
   Confirm dialog
   ============================================ */

.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(20px);
}

.modal-overlay.is-open {
  display: flex;
}

.modal {
  max-width: 24rem;
  width: 100%;
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  text-align: center;
  animation: zoom-in 0.3s var(--ease-out-expo);
  border: 2px solid rgba(255, 255, 255, 0.05);
}

.modal__icon {
  display: flex;
  justify-content: center;
}

.modal__icon-circle {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: rgba(239, 68, 68, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.modal__title {
  font-size: 1.25rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: white;
}

.modal__message {
  opacity: 0.6;
  font-size: var(--text-md);
  line-height: 1.6;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 700;
  margin-top: 0.5rem;
}

.modal__actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  margin-top: 0.5rem;
}

/* ============================================
   Component: Progress Matrix
   Top-of-screen progress indicator
   ============================================ */

.progress-matrix {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  z-index: var(--z-progress);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.5s ease;
  display: flex;
  gap: 4px;
}

.progress-matrix.is-active {
  opacity: 1;
}

.progress-step {
  flex: 1;
  height: 100%;
  background: var(--panel-border);
  border-radius: var(--radius-full);
  position: relative;
}

.progress-step.is-done {
  background: var(--accent);
}

.progress-step.is-active::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--accent);
  border-radius: var(--radius-full);
  animation: pulse-width 1.5s infinite;
}

/* ============================================
   Component: Selection Bar
   Multi-select action bar
   ============================================ */

.selection-bar {
  position: fixed;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: var(--z-modal);
  padding: 1.25rem 2.5rem;
  border: 2px solid var(--accent);
  display: none;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xl);
  box-shadow: var(--shadow-heavy);
  animation: slide-in-bottom 0.5s var(--ease-out-expo);
  border-radius: 2.5rem;
}

.selection-bar.is-visible {
  display: flex;
}

@media (min-width: 640px) {
  .selection-bar {
    flex-direction: row;
  }
}

.selection-bar__count {
  display: flex;
  flex-direction: column;
}

.selection-bar__count-number {
  font-size: 1.875rem;
  font-weight: 900;
  letter-spacing: -0.04em;
  color: var(--accent);
}

.selection-bar__count-label {
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  opacity: 0.6;
  font-weight: 900;
}

.selection-bar__divider {
  width: 1px;
  height: 3rem;
  background: rgba(255, 255, 255, 0.1);
}

/* ============================================
   Component: Footer Toast
   ============================================ */

.footer-toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  padding: 0.75rem 2rem;
  font-size: var(--text-md);
  font-weight: 700;
  transition: all var(--duration-normal) ease;
  z-index: var(--z-footer);
  translate: 0 8rem;
  opacity: 0;
  pointer-events: none;
}

.footer-toast.is-visible {
  translate: 0 0;
  opacity: 1;
}

/* ============================================
   Component: Auth Overlay
   ============================================ */

.auth-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-auth-overlay);
  display: flex;
  align-items: center;
  justify-content: center;
  background: #0f172a;
  transition: opacity 0.7s ease;
}

.auth-overlay.is-hidden {
  display: none;
}