/* =============================================================================
   AUDIO DESIGN STUDIOS - PROCESSOR PAGE (processor.html)
   Single-File Audio Processor & Analyzer

   Inherits all VU meter, player controls, modal, and layout styles from
   demo.css (which in turn imports shared.css and compose.css).
   Only processor-specific additions are defined here.
   ============================================================================= */

@import url('./demo.css');

/* =============================================================================
   1. UPLOAD ZONE — drag-and-drop or click to browse
   ============================================================================= */

.upload-zone {
  position: relative;
  border: 2px dashed rgba(126, 201, 143, 0.3);
  border-radius: 10px;
  background: rgba(126, 201, 143, 0.03);
  padding: 2.5rem 2rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.25s ease;
  margin-bottom: 2rem;
  min-height: 140px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.upload-zone:hover {
  border-color: rgba(126, 201, 143, 0.55);
  background: rgba(126, 201, 143, 0.06);
}

.upload-zone.drag-over {
  border-color: #7ec98f;
  background: rgba(126, 201, 143, 0.12);
  box-shadow: 0 0 0 4px rgba(126, 201, 143, 0.12), 0 0 24px rgba(126, 201, 143, 0.15);
}

.upload-zone.loaded {
  border-style: solid;
  border-color: rgba(126, 201, 143, 0.5);
  background: rgba(126, 201, 143, 0.06);
  padding: 1.25rem 2rem;
  min-height: 0;
  cursor: default;
}

.upload-file-input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: -1;
}

/* Label that covers the upload zone in empty state — direct tap = file picker */
.upload-zone-label {
  position: absolute;
  inset: 0;
  cursor: pointer;
  z-index: 2;
  display: block;
  -webkit-tap-highlight-color: transparent;
}

/* Hide the label when a file is loaded (use programmatic click instead) */
.upload-zone.loaded .upload-zone-label {
  display: none;
}

.upload-zone-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  pointer-events: none;
  user-select: none;
}

.upload-zone-icon {
  font-size: 2.5rem;
  line-height: 1;
  color: rgba(126, 201, 143, 0.55);
  margin-bottom: 0.25rem;
}

.upload-zone-text {
  font-family: 'Courier New', monospace;
  font-size: 1rem;
  font-weight: 600;
  color: rgba(200, 200, 200, 0.85);
  letter-spacing: 0.04em;
}

.upload-zone-subtext {
  font-family: 'Courier New', monospace;
  font-size: 0.78rem;
  color: rgba(126, 201, 143, 0.55);
  letter-spacing: 0.08em;
}

.upload-zone-formats {
  font-family: 'Courier New', monospace;
  font-size: 0.7rem;
  color: rgba(126, 201, 143, 0.35);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-top: 0.25rem;
}

/* Loaded state */
.upload-loaded-content {
  display: none;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  width: 100%;
  flex-wrap: wrap;
  z-index: 3;
  position: relative;
}

.upload-loaded-filename {
  font-family: 'Courier New', monospace;
  font-size: 0.9rem;
  color: #7ec98f;
  font-weight: 600;
  letter-spacing: 0.04em;
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  text-align: left;
}

.upload-clear-btn {
  background: none;
  border: 1px solid rgba(255, 107, 107, 0.4);
  border-radius: 4px;
  color: rgba(255, 107, 107, 0.8);
  font-family: 'Courier New', monospace;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.35rem 0.75rem;
  cursor: pointer;
  transition: all 0.18s ease;
  flex-shrink: 0;
}

.upload-clear-btn:hover {
  background: rgba(255, 107, 107, 0.1);
  border-color: rgba(255, 107, 107, 0.7);
  color: #ff6b6b;
}

/* Upload another button (shown in loaded state for new file) */
.upload-another-btn {
  background: none;
  border: 1px solid rgba(126, 201, 143, 0.35);
  border-radius: 4px;
  color: rgba(126, 201, 143, 0.7);
  font-family: 'Courier New', monospace;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.35rem 0.75rem;
  cursor: pointer;
  transition: all 0.18s ease;
  flex-shrink: 0;
}

.upload-another-btn:hover {
  background: rgba(126, 201, 143, 0.08);
  border-color: rgba(126, 201, 143, 0.6);
  color: #7ec98f;
}

/* =============================================================================
   2. UPLOAD ZONE BUFFERING ANIMATION
   ============================================================================= */

/* Spinner shown on upload zone while audio loads from the blob URL */
@keyframes uploadZoneSpin {
  to { transform: rotate(360deg); }
}

.upload-zone.buffering::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border: 2px solid rgba(126, 201, 143, 0.25);
  border-top-color: #7ec98f;
  border-radius: 50%;
  animation: uploadZoneSpin 0.7s linear infinite;
  z-index: 10;
}

/* =============================================================================
   3. PROCESSOR CANVAS OVERRIDE
   The processor uses #procLoudnessMeterCanvas rather than demo's
   #loudnessMeterCanvas, so the sizing rule needs to be declared here.
   ============================================================================= */

#procLoudnessMeterCanvas {
  width: 100%;
  height: 300px;
  border: 1px solid #333;
  border-radius: 6px;
  background: #0f0f0f;
}

@media (max-width: 768px) {
  #procLoudnessMeterCanvas {
    height: 200px;
  }
}