/* ============================================================
   converter.css — Converter UI Components
   Drop zone, file list, progress, tier bar, upgrade banner
   ============================================================ */

/* ----------------------------------------------------------
   Converter Section Wrapper
   ---------------------------------------------------------- */
.converter-section {
  padding-block: var(--space-12);
}

.converter-hero {
  text-align: center;
  margin-bottom: var(--space-10);
}

.converter-hero__title {
  font-size: var(--text-4xl);
  font-weight: var(--weight-bold);
  letter-spacing: -0.03em;
  line-height: var(--leading-tight);
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

.converter-hero__subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 560px;
  margin-inline: auto;
  line-height: var(--leading-relaxed);
}

/* ----------------------------------------------------------
   Tier / Status Bar
   ---------------------------------------------------------- */
.tier-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-4);
  flex-wrap: wrap;
}

.tier-bar__status {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.tier-bar__status-dot {
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  background: var(--color-text-subtle);
  flex-shrink: 0;
}

.tier-bar--pro .tier-bar__status-dot {
  background: var(--color-success);
}

.tier-bar__counter {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.tier-bar__counter strong {
  color: var(--color-text);
}

.tier-bar__upgrade-link {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-accent);
  text-decoration: none;
  white-space: nowrap;
}

.tier-bar__upgrade-link:hover {
  text-decoration: underline;
}

/* ----------------------------------------------------------
   Drop Zone
   ---------------------------------------------------------- */
.drop-zone {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  padding: var(--space-12) var(--space-8);
  border: 2px dashed var(--color-border-strong);
  border-radius: var(--radius-2xl);
  background: var(--color-surface);
  text-align: center;
  cursor: pointer;
  transition: border-color var(--transition-normal),
              background-color var(--transition-normal);
  min-height: 240px;
}

.drop-zone:hover,
.drop-zone--hover {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}

.drop-zone--hover {
  border-style: solid;
}

.drop-zone--has-files {
  min-height: auto;
  padding: var(--space-6);
  border-style: solid;
  border-color: var(--color-border);
  background: var(--color-bg);
}

.drop-zone__input {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

.drop-zone__icon {
  width: 56px;
  height: 56px;
  color: var(--color-text-subtle);
  transition: color var(--transition-normal);
}

.drop-zone:hover .drop-zone__icon,
.drop-zone--hover .drop-zone__icon {
  color: var(--color-primary);
}

.drop-zone__title {
  font-size: var(--text-xl);
  font-weight: var(--weight-semibold);
  color: var(--color-text);
  line-height: var(--leading-tight);
}

.drop-zone__subtitle {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
}

.drop-zone__or {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  width: 100%;
  max-width: 300px;
  color: var(--color-text-subtle);
  font-size: var(--text-xs);
}

.drop-zone__or::before,
.drop-zone__or::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-border);
}

.drop-zone__cta {
  /* Button rendered in JS as .btn--primary */
  pointer-events: none; /* Let the input overlay handle clicks */
}

/* ----------------------------------------------------------
   Action Bar (above file list, shown when files present)
   ---------------------------------------------------------- */
.action-bar {
  display: none;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-top: var(--space-4);
  flex-wrap: wrap;
}

.action-bar--visible {
  display: flex;
}

.action-bar__left {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.action-bar__right {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.action-bar__summary {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.action-bar__summary strong {
  color: var(--color-text);
}

/* ----------------------------------------------------------
   Overall Progress Bar
   ---------------------------------------------------------- */
.overall-progress {
  display: none;
  margin-top: var(--space-4);
}

.overall-progress--visible {
  display: block;
}

.overall-progress__label {
  display: flex;
  justify-content: space-between;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--space-1);
}

.overall-progress__track {
  height: 6px;
  background: var(--color-border);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.overall-progress__fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  transition: width 300ms ease;
  width: 0%;
}

/* ----------------------------------------------------------
   File List
   ---------------------------------------------------------- */
.file-list {
  display: none;
  flex-direction: column;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

.file-list--visible {
  display: flex;
}

/* ----------------------------------------------------------
   File Item
   ---------------------------------------------------------- */
.file-item {
  display: grid;
  grid-template-columns: 56px 1fr auto;
  gap: var(--space-3);
  align-items: center;
  padding: var(--space-3);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition-fast);
}

.file-item:hover {
  border-color: var(--color-border-strong);
}

.file-item--done {
  border-color: var(--color-success);
  background: var(--color-success-light);
}

.file-item--error {
  border-color: var(--color-error);
  background: var(--color-error-light);
}

.file-item--converting {
  border-color: var(--color-primary);
}

/* Thumbnail */
.file-item__thumb {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  object-fit: cover;
  background: var(--color-border);
  flex-shrink: 0;
}

.file-item__thumb--placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-border);
  color: var(--color-text-subtle);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
}

/* Info */
.file-item__info {
  min-width: 0;
}

.file-item__name {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.2;
  margin-bottom: var(--space-1);
}

.file-item__meta {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.file-item__size-arrow {
  color: var(--color-text-subtle);
}

/* Progress within file item */
.file-item__progress {
  margin-top: var(--space-2);
  height: 3px;
  background: var(--color-border);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.file-item__progress-fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  width: 0%;
  transition: width 200ms ease;
}

.file-item__progress-fill--indeterminate {
  width: 60%;
  animation: indeterminate 1.5s ease-in-out infinite;
}

@keyframes indeterminate {
  0%   { transform: translateX(-100%); }
  100% { transform: translateX(280%); }
}

.file-item__status {
  font-size: var(--text-xs);
  margin-top: var(--space-1);
  font-weight: var(--weight-medium);
}

.file-item__status--pending   { color: var(--color-text-subtle); }
.file-item__status--converting{ color: var(--color-primary); }
.file-item__status--done      { color: var(--color-success); }
.file-item__status--error     { color: var(--color-error); }

/* Actions */
.file-item__actions {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: var(--space-2);
  flex-shrink: 0;
}

.file-item__download {
  /* .btn .btn--sm .btn--primary */
}

.file-item__remove {
  /* .btn .btn--sm .btn--ghost */
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.file-item:hover .file-item__remove {
  opacity: 1;
}

/* ----------------------------------------------------------
   Upgrade Banner (inline, below drop zone)
   ---------------------------------------------------------- */
.upgrade-inline {
  display: none;
  align-items: flex-start;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  background: var(--color-warning-light);
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-lg);
  margin-top: var(--space-4);
}

.upgrade-inline--visible {
  display: flex;
}

.upgrade-inline__icon {
  font-size: var(--text-2xl);
  line-height: 1;
  flex-shrink: 0;
}

.upgrade-inline__body {
  flex: 1;
}

.upgrade-inline__title {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-text);
  margin-bottom: var(--space-1);
}

.upgrade-inline__text {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
}

.upgrade-inline__btns {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

/* ----------------------------------------------------------
   Upgrade Limit Banner (full-width, shown when limit hit)
   ---------------------------------------------------------- */
.upgrade-banner {
  display: none;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-8);
  background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
  border: 2px solid var(--color-accent);
  border-radius: var(--radius-2xl);
  text-align: center;
  margin-top: var(--space-6);
}

.upgrade-banner--visible {
  display: flex;
}

.upgrade-banner__emoji {
  font-size: 2.5rem;
  line-height: 1;
}

.upgrade-banner__title {
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  color: var(--color-text);
  line-height: var(--leading-tight);
}

.upgrade-banner__text {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 480px;
}

.upgrade-banner__plans {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  justify-content: center;
}

/* ----------------------------------------------------------
   Plan Cards (shown in upgrade flow)
   ---------------------------------------------------------- */
.plan-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
  max-width: 480px;
  margin-inline: auto;
  margin-top: var(--space-6);
}

.plan-card {
  position: relative;
  padding: var(--space-6);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-bg);
  text-align: center;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.plan-card--featured {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
}

.plan-card__badge {
  position: absolute;
  top: -1px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-accent);
  color: #ffffff;
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  padding: 2px var(--space-3);
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  white-space: nowrap;
}

.plan-card__name {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.plan-card__price {
  font-size: var(--text-3xl);
  font-weight: var(--weight-bold);
  color: var(--color-text);
  line-height: 1;
  margin-bottom: var(--space-1);
}

.plan-card__period {
  font-size: var(--text-xs);
  color: var(--color-text-subtle);
  margin-bottom: var(--space-4);
}

.plan-card__features {
  text-align: left;
  margin-bottom: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.plan-card__feature {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
}

.plan-card__feature::before {
  content: '✓';
  color: var(--color-success);
  font-weight: var(--weight-bold);
  flex-shrink: 0;
  margin-top: 1px;
}

/* ----------------------------------------------------------
   Affiliate Block
   ---------------------------------------------------------- */
.affiliate-block {
  padding-block: var(--space-10);
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}

.affiliate-block__label {
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-subtle);
  margin-bottom: var(--space-4);
}

.affiliate-cards {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.affiliate-card {
  display: grid;
  grid-template-columns: 52px 1fr auto;
  gap: var(--space-5);
  align-items: center;
  padding: var(--space-5) var(--space-6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-bg);
  text-decoration: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.affiliate-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  text-decoration: none;
}

.affiliate-card__icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-lg);
  background: var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}

.affiliate-card__body {
  min-width: 0;
}

.affiliate-card__name {
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
  color: var(--color-text);
  margin-bottom: var(--space-1);
}

.affiliate-card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
}

.affiliate-card__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  background: var(--color-primary);
  color: #ffffff;
  white-space: nowrap;
  flex-shrink: 0;
  transition: background-color var(--transition-fast);
}

.affiliate-card:hover .affiliate-card__cta {
  background: var(--color-primary-hover);
}

@media (max-width: 640px) {
  .affiliate-card {
    grid-template-columns: 48px 1fr;
    grid-template-rows: auto auto;
  }

  .affiliate-card__cta {
    grid-column: 1 / -1;
    justify-content: center;
  }
}

/* ----------------------------------------------------------
   Privacy Notice
   ---------------------------------------------------------- */
.privacy-notice {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  margin-top: var(--space-6);
}

.privacy-notice__icon {
  font-size: var(--text-lg);
  flex-shrink: 0;
  line-height: 1.4;
}

.privacy-notice__text {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
}

.privacy-notice__text strong {
  color: var(--color-text);
  font-weight: var(--weight-semibold);
}

/* ----------------------------------------------------------
   Feature Grid (trust signals below converter)
   ---------------------------------------------------------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-12);
}

.feature-card {
  text-align: center;
  padding: var(--space-6);
}

.feature-card__icon {
  font-size: 2rem;
  margin-bottom: var(--space-3);
  display: block;
}

.feature-card__title {
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.feature-card__text {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
}

/* ----------------------------------------------------------
   Responsive
   ---------------------------------------------------------- */
@media (max-width: 640px) {
  .converter-hero__title {
    font-size: var(--text-3xl);
  }

  .file-item {
    grid-template-columns: 44px 1fr;
  }

  .file-item__actions {
    grid-column: 1 / -1;
    flex-direction: row;
    align-items: center;
  }

  .file-item__remove {
    opacity: 1;
  }

  .plan-cards {
    grid-template-columns: 1fr;
  }

  .feature-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

  .upgrade-inline {
    flex-direction: column;
  }

  .action-bar {
    flex-direction: column;
    align-items: stretch;
  }

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