/* modal.css — Settings modal and overlay styles (Module 7) */

/* ─── Backdrop overlay ────────────────────────────────────────────────────── */

.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  background: var(--color-overlay);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  opacity: 0;
  transition: opacity var(--transition-slow);
  /* Hidden from pointer events until open so it doesn't block the page. */
  pointer-events: none;
}

.modal-overlay.is-open {
  opacity: 1;
  pointer-events: auto;
}

/* ─── Dialog box ──────────────────────────────────────────────────────────── */

.modal {
  background: var(--color-surface-raised);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  inline-size: 100%;
  max-inline-size: 28rem;
  max-block-size: min(90dvh, 640px);
  overflow-y: auto;
  overscroll-behavior: contain;
  transform: translateY(1.25rem) scale(0.96);
  opacity: 0;
  transition:
    transform var(--transition-slow) var(--ease-out-quart),
    opacity   var(--transition-slow);
}

.modal-overlay.is-open .modal {
  transform: translateY(0) scale(1);
  opacity: 1;
}

/* ─── Modal header ────────────────────────────────────────────────────────── */

.modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-6);
  border-block-end: 1px solid var(--color-border);
  /* Sticks to the top as the user scrolls the body. */
  position: sticky;
  inset-block-start: 0;
  background: var(--color-surface-raised);
  z-index: 1;
}

.modal__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--fw-bold);
  color: var(--color-text);
}

.modal__close {
  display: flex;
  align-items: center;
  justify-content: center;
  inline-size: 2.25rem;
  block-size: 2.25rem;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  flex-shrink: 0;
  transition:
    color var(--transition-fast),
    background-color var(--transition-fast);
}

.modal__close:hover {
  color: var(--color-text);
  background-color: var(--color-surface);
}

/* ─── Modal body ──────────────────────────────────────────────────────────── */

.modal__body {
  padding: 0 var(--space-6) var(--space-6);
}

/* ─── Settings group ──────────────────────────────────────────────────────── */

.settings-group {
  border-block-end: 1px solid var(--color-border);
  padding-block: var(--space-5);
}

.settings-group:last-child {
  border-block-end: none;
  padding-block-end: 0;
}

.settings-group__label {
  font-size: var(--text-xs);
  font-weight: var(--fw-semibold);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-block-end: var(--space-4);
}

/* ─── Settings row ────────────────────────────────────────────────────────── */

.settings-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: var(--space-2);
  min-block-size: 2.75rem;
}

.settings-row__label {
  font-size: var(--text-sm);
  font-weight: var(--fw-medium);
  color: var(--color-text);
  flex: 1;
}

/* ─── Segmented button group (Appearance, Speed, Overlay) ─────────────────── */

.settings-btn-group {
  display: flex;
  gap: var(--space-1);
  flex-wrap: wrap;
  padding-block-start: var(--space-1);
}

.settings-btn {
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  border: 2px solid var(--color-border);
  background: transparent;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  font-weight: var(--fw-medium);
  cursor: pointer;
  min-block-size: 2.25rem;
  transition:
    border-color     var(--transition-fast),
    background-color var(--transition-fast),
    color            var(--transition-fast);
}

.settings-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.settings-btn.is-active {
  border-color:     var(--color-primary);
  background-color: var(--color-primary-light);
  color:            var(--color-primary);
}

/* ─── Toggle switch ───────────────────────────────────────────────────────── */

.toggle {
  position: relative;
  inline-size: 3rem;
  block-size: 1.625rem;
  border-radius: var(--radius-full);
  background: var(--color-border-strong);
  border: none;
  cursor: pointer;
  flex-shrink: 0;
  transition: background-color var(--transition-base);
}

.toggle::after {
  content: '';
  position: absolute;
  inset-block-start: 3px;
  inset-inline-start: 3px;
  inline-size: 1.25rem;
  block-size: 1.25rem;
  border-radius: var(--radius-full);
  background: #fff;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base);
}

.toggle.is-on {
  background: var(--color-primary);
}

.toggle.is-on::after {
  /* 3rem total − 2×3px padding − 1.25rem thumb = ~1.375rem travel */
  transform: translateX(1.375rem);
}

/* ─── Volume slider ───────────────────────────────────────────────────────── */

.volume-slider {
  -webkit-appearance: none;
  appearance: none;
  inline-size: 100%;
  block-size: 4px;
  border-radius: var(--radius-full);
  background: var(--color-border-strong);
  outline: none;
  cursor: pointer;
  flex: 1;
}

.volume-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  inline-size: 1.125rem;
  block-size: 1.125rem;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
}

.volume-slider::-moz-range-thumb {
  inline-size: 1.125rem;
  block-size: 1.125rem;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  cursor: pointer;
  border: none;
  box-shadow: var(--shadow-sm);
}

.volume-slider:focus {
  outline: none;
  box-shadow: var(--shadow-focus);
  border-radius: var(--radius-full);
}

/* ─── Select dropdown ─────────────────────────────────────────────────────── */

.settings-select {
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  border: 2px solid var(--color-border);
  background: var(--color-surface-inset);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  cursor: pointer;
  min-block-size: 2.25rem;
  transition: border-color var(--transition-fast);
}

.settings-select:focus {
  outline: none;
  border-color: var(--color-border-focus);
  box-shadow: var(--shadow-focus);
}

/* ─── Ads section ─────────────────────────────────────────────────────────── */

.ads-pitch {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
  margin-block-end: var(--space-3);
}

.ads-link {
  display: inline-block;
  font-size: var(--text-sm);
  font-weight: var(--fw-semibold);
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 0.2em;
  margin-block-end: var(--space-4);
}

.ads-link:hover {
  color: var(--color-primary-hover);
}

/* ─── License status ──────────────────────────────────────────────────────── */

.license-status {
  font-size: var(--text-sm);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  margin-block-start: var(--space-2);
  display: none;
}

.license-status.is-valid {
  display: block;
  background: var(--color-success-light);
  color: var(--color-success);
  font-weight: var(--fw-medium);
}

.license-status.is-invalid {
  display: block;
  background: var(--color-error-light);
  color: var(--color-error);
}

/* ─── Reduced motion ──────────────────────────────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
  .modal-overlay,
  .modal,
  .toggle,
  .toggle::after {
    transition: none;
  }
}