/* ==========================================================================
   CONVERTER SUBPAGE (APPLE DARK DESIGN SYSTEM)
   ========================================================================== */
.converter-hero {
  position: relative;
  padding: 130px 24px 44px;
  text-align: center;
  overflow: hidden;
}

.converter-shell {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(290px, 360px);
  gap: 24px;
  padding: 0 24px 110px;
  max-width: 1080px;
  margin: 0 auto;
}

.converter-panel,
.converter-notes {
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.55);
}

.converter-panel {
  display: grid;
  gap: 22px;
  padding: clamp(24px, 4vw, 38px);
}

.drop-zone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 220px;
  padding: 28px;
  text-align: center;
  background: #141416;
  border: 2px dashed rgba(255, 255, 255, 0.16);
  border-radius: 18px;
  cursor: pointer;
  transition: all 0.25s var(--ease-apple);
}

.drop-zone.is-dragging,
.drop-zone:hover {
  background: rgba(41, 151, 255, 0.06);
  border-color: var(--apple-cyan);
  transform: scale(1.01);
}

.drop-zone input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.drop-icon-badge {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  background: rgba(41, 151, 255, 0.14);
  color: var(--apple-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
}

.drop-title {
  display: block;
  color: var(--text-primary);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.015em;
}

.drop-copy {
  display: block;
  max-width: 480px;
  margin-top: 6px;
  color: var(--text-secondary);
  font-size: 13px;
}

.selected-file {
  padding: 14px 18px;
  color: #ffffff;
  background: rgba(41, 151, 255, 0.12);
  border: 1px solid rgba(41, 151, 255, 0.35);
  border-radius: 14px;
  font-weight: 600;
  font-size: 14px;
}

.control-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.control-grid label {
  display: grid;
  gap: 8px;
  color: var(--text-secondary);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.control-grid select {
  width: 100%;
  min-height: 44px;
  padding: 0 14px;
  color: var(--text-primary);
  background: #141416;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 12px;
  font: inherit;
  font-size: 14px;
  font-weight: 500;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.control-grid select:focus {
  border-color: var(--apple-cyan);
  box-shadow: 0 0 0 3px rgba(41, 151, 255, 0.2);
}

.status-box {
  display: grid;
  gap: 10px;
  padding: 18px 20px;
  background: #141416;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 14px;
}

.progress-row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 13px;
}

progress {
  width: 100%;
  height: 8px;
  overflow: hidden;
  border: 0;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
}

progress::-webkit-progress-bar {
  background: rgba(255, 255, 255, 0.1);
}

progress::-webkit-progress-value {
  background: linear-gradient(90deg, var(--apple-blue) 0%, var(--apple-cyan) 100%);
  border-radius: 999px;
}

.converter-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.converter-actions .button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 980px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.2s var(--ease-apple);
}

.converter-actions .button.primary {
  background: var(--apple-blue);
  color: #ffffff;
  box-shadow: 0 4px 20px var(--apple-blue-glow);
}

.converter-actions .button.primary:hover {
  background: var(--apple-blue-hover);
  transform: translateY(-1px);
}

.converter-actions .button.secondary {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.16);
}

.converter-actions .button.secondary:hover {
  background: rgba(255, 255, 255, 0.14);
}

.converter-actions button:disabled {
  cursor: wait;
  opacity: 0.6;
  transform: none;
}

.download-result {
  color: #ffffff !important;
  background: rgba(48, 209, 88, 0.2) !important;
  border-color: rgba(48, 209, 88, 0.5) !important;
}

.download-result:hover {
  background: rgba(48, 209, 88, 0.3) !important;
}

[hidden] {
  display: none !important;
}

.converter-notes {
  align-self: start;
  padding: 32px;
}

.converter-notes-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--apple-cyan);
  margin-bottom: 10px;
}

.converter-notes h2 {
  margin: 0 0 12px;
  font-size: 22px;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: -0.015em;
}

.converter-notes p,
.converter-notes li {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.6;
}

.converter-notes ul {
  display: grid;
  gap: 10px;
  margin: 18px 0 24px;
  padding-left: 18px;
}

.converter-notes-cta {
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.converter-notes-cta p {
  font-size: 13px;
  margin-bottom: 12px;
}

@media (max-width: 900px) {
  .converter-shell,
  .control-grid {
    grid-template-columns: 1fr;
  }
}