/* ChangeThisFile — Converter Components */

/* ——— Drop Zone ——— */
.drop-zone {
  position: relative;
  border: 2px dashed var(--glass-border);
  border-radius: var(--radius-xl);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  box-shadow: var(--glass-shadow), var(--glass-inset);
  padding: var(--space-16) var(--space-8);
  text-align: center;
  cursor: pointer;
  transition: var(--transition-base);
  overflow: hidden;
  min-height: 340px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.drop-zone::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: var(--radius-xl);
  padding: 2px;
  background: linear-gradient(135deg, rgba(255,255,255,0.15), transparent 40%, transparent 60%, rgba(255,255,255,0.10));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  transition: var(--transition-base);
}

.drop-zone:hover {
  border-color: var(--color-accent);
  background: var(--glass-bg-hover);
  box-shadow: var(--glass-shadow-hover), var(--glass-inset-strong), 0 0 40px var(--color-accent-glow);
}

.drop-zone:hover::before {
  background: linear-gradient(135deg, rgba(59,130,246,0.30), transparent 40%, transparent 60%, rgba(59,130,246,0.20));
}

.drop-zone--active {
  border-color: var(--color-accent);
  background: var(--glass-bg-active);
  box-shadow: var(--glass-shadow-elevated), var(--glass-inset-strong), 0 0 60px var(--color-accent-glow);
  transform: scale(1.01);
}

.drop-zone--active .drop-zone__border-glow {
  opacity: 1;
}

/* Animated border glow on drag */
.drop-zone__border-glow {
  position: absolute;
  inset: -2px;
  border-radius: var(--radius-xl);
  background: conic-gradient(from 0deg, var(--color-accent), #8b5cf6, #14b8a6, var(--color-accent));
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-out);
  z-index: -1;
  animation: borderRotate 3s linear infinite;
}

@keyframes borderRotate {
  to { transform: rotate(360deg); }
}

.drop-zone__icon {
  font-size: 4rem;
  margin-bottom: var(--space-4);
  opacity: 0.7;
  transition: var(--transition-base);
  filter: drop-shadow(0 2px 8px rgba(0,0,0,0.15));
}

.drop-zone:hover .drop-zone__icon {
  opacity: 1;
  transform: translateY(-4px);
}

.drop-zone__title {
  font-size: var(--text-xl);
  font-weight: var(--weight-semibold);
  color: var(--text-primary);
  text-shadow: var(--text-shadow);
  margin-bottom: var(--space-2);
}

.drop-zone__subtitle {
  font-size: var(--text-base);
  color: var(--text-tertiary);
  margin-bottom: var(--space-4);
}

.drop-zone__formats {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
  max-width: 480px;
}

.drop-zone__input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

/* ——— File Preview ——— */
.file-preview {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur-light);
  -webkit-backdrop-filter: var(--glass-blur-light);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--glass-shadow);
  animation: fadeInUp var(--duration-normal) var(--ease-out) both;
}

.file-preview__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--glass-bg-active);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-2xl);
  flex-shrink: 0;
}

.file-preview__info {
  flex: 1;
  min-width: 0;
}

.file-preview__name {
  font-weight: var(--weight-semibold);
  font-size: var(--text-base);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.file-preview__meta {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-1);
}

.file-preview__remove {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  background: rgba(255,255,255,0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-tertiary);
  transition: var(--transition-fast);
  flex-shrink: 0;
  font-size: var(--text-lg);
}

.file-preview__remove:hover {
  background: var(--color-error-glow);
  color: var(--color-error);
}

/* ——— Format Selector ——— */
.format-selector {
  animation: fadeInUp var(--duration-normal) var(--ease-out) both;
  animation-delay: 100ms;
}

.format-selector__label {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--text-secondary);
  margin-bottom: var(--space-3);
}

.format-selector__grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.format-selector__option {
  padding: var(--space-2) var(--space-4);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition-fast);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
}

.format-selector__option:hover {
  background: var(--glass-bg-hover);
  border-color: var(--glass-border-hover);
  color: var(--text-primary);
}

.format-selector__option--active {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
  box-shadow: 0 2px 12px var(--color-accent-glow);
}

.format-selector__option--recommended {
  position: relative;
}

.format-selector__option--recommended::after {
  content: 'recommended';
  position: absolute;
  top: -8px;
  right: -4px;
  font-size: 0.6rem;
  background: var(--color-success);
  color: #fff;
  padding: 1px 5px;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: var(--weight-bold);
}

/* ——— Progress Bar ——— */
.progress {
  width: 100%;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur-light);
  -webkit-backdrop-filter: var(--glass-blur-light);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
  height: 8px;
  overflow: hidden;
  position: relative;
  box-shadow: var(--glass-inset);
}

.progress__bar {
  height: 100%;
  background: linear-gradient(90deg, var(--color-accent), #8b5cf6);
  border-radius: var(--radius-full);
  transition: width var(--duration-normal) var(--ease-out);
  position: relative;
}

.progress__bar::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.25), transparent);
  background-size: 200% 100%;
  animation: shimmer 1.5s ease-in-out infinite;
}

.progress__text {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-top: var(--space-2);
  text-align: center;
}

/* ——— Converter Container ——— */
.converter {
  max-width: 640px;
  margin: 0 auto;
}

.converter__steps {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.converter__step {
  display: none;
}

.converter__step--active {
  display: block;
}

/* ——— Results Section ——— */
.results {
  animation: scaleIn var(--duration-normal) var(--ease-out) both;
}

.results__header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.results__icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: var(--color-success-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xl);
}

.results__title {
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
}

.results__subtitle {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
}

.results__actions {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.results__comparison {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
  margin-top: var(--space-4);
  padding: var(--space-4);
  background: rgba(0,0,0,0.15);
  border-radius: var(--radius-lg);
}

.results__comparison-item {
  text-align: center;
}

.results__comparison-label {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  margin-bottom: var(--space-2);
}

.results__comparison-value {
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
}

.results__comparison-value--reduced {
  color: var(--color-success);
}

/* ——— Error State ——— */
.error-state {
  padding: var(--space-6);
  text-align: center;
  animation: fadeInUp var(--duration-normal) var(--ease-out) both;
}

.error-state__icon {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-3);
}

.error-state__title {
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  color: var(--color-error);
  margin-bottom: var(--space-2);
}

.error-state__message {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-4);
  max-width: 400px;
  margin-left: auto;
  margin-right: auto;
}

/* ——— Conversion Animation ——— */
.converting-animation {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-8) 0;
}

.converting-animation__icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--color-accent), #8b5cf6);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-2xl);
  animation: morphSpin 2s ease-in-out infinite;
  box-shadow: 0 4px 24px var(--color-accent-glow);
}

@keyframes morphSpin {
  0%, 100% {
    border-radius: var(--radius-lg);
    transform: rotate(0deg) scale(1);
  }
  25% {
    border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
    transform: rotate(90deg) scale(1.05);
  }
  50% {
    border-radius: var(--radius-xl);
    transform: rotate(180deg) scale(1);
  }
  75% {
    border-radius: 70% 30% 30% 70% / 70% 70% 30% 30%;
    transform: rotate(270deg) scale(1.05);
  }
}

.converting-animation__text {
  font-size: var(--text-base);
  color: var(--text-secondary);
  font-weight: var(--weight-medium);
}

/* ——— Homepage Hero Drop Zone (extra large) ——— */
.drop-zone--hero {
  min-height: 50vh;
  max-height: 500px;
  padding: var(--space-20) var(--space-8);
  border-width: 2px;
}

/* ——— Popular Conversions Grid ——— */
.popular-conversions {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-3);
}

/* ——— Responsive ——— */
@media (max-width: 768px) {
  .drop-zone {
    min-height: 260px;
    padding: var(--space-10) var(--space-4);
  }

  .drop-zone--hero {
    min-height: 40vh;
    max-height: 380px;
    padding: var(--space-12) var(--space-4);
  }

  .drop-zone__icon {
    font-size: 3rem;
  }

  .drop-zone__title {
    font-size: var(--text-lg);
  }

  .file-preview {
    flex-direction: column;
    text-align: center;
    gap: var(--space-3);
  }

  .results__actions {
    flex-direction: column;
  }

  .results__comparison {
    grid-template-columns: 1fr;
    gap: var(--space-3);
  }

  .popular-conversions {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .drop-zone--hero {
    min-height: 35vh;
  }

  .format-selector__grid {
    justify-content: center;
  }
}