/* ============================================================
   UPLOAD ZONE
   ============================================================ */

.upload-section {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* Spec Panel */
.spec-panel {
  padding: 20px;
  border-radius: var(--border-radius-lg);
  background: var(--grad-card);
  border: 1px solid var(--border);
  animation: fadeIn 0.3s ease;
}

.spec-panel-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.spec-panel-title {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.spec-panel-title h2 {
  font-size: 1.1rem;
  font-weight: 800;
}

.spec-panel-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.spec-verified {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.72rem;
  color: var(--success);
  font-weight: 600;
}

.spec-panel-actions {
  display: flex;
  gap: 8px;
  flex-shrink: 0;
}

.spec-bg-chip {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  border-radius: 8px;
  font-size: 0.75rem;
  font-weight: 700;
  border: 1px solid rgba(0,0,0,0.1);
}

.spec-bg-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 1.5px solid rgba(0,0,0,0.15);
}

/* Placeholder when no exam selected */
.spec-placeholder {
  padding: 32px 20px;
  text-align: center;
  color: var(--text-muted);
  animation: fadeIn 0.3s ease;
}

.spec-placeholder .placeholder-icon {
  font-size: 3rem;
  margin-bottom: 12px;
  display: block;
  opacity: 0.5;
}

.spec-placeholder h3 {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.spec-placeholder p {
  font-size: 0.85rem;
  line-height: 1.6;
}

/* Upload Drop Zone */
.upload-area {
  position: relative;
  border: 2px dashed var(--border);
  border-radius: var(--border-radius-lg);
  padding: 40px 24px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  background: var(--bg-card);
  overflow: hidden;
}

.upload-area::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--grad-primary);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.upload-area:hover,
.upload-area.drag-over {
  border-color: var(--primary);
  transform: scale(1.005);
}

.upload-area:hover::before,
.upload-area.drag-over::before {
  opacity: 0.04;
}

.upload-area.drag-over {
  box-shadow: 0 0 0 4px rgba(14, 165, 233, 0.15), var(--shadow-glow);
}

.upload-area.has-file {
  border-style: solid;
  border-color: rgba(14, 165, 233, 0.4);
  padding: 20px;
}

.upload-content {
  position: relative;
  z-index: 1;
  pointer-events: none;
}

.upload-icon-wrap {
  width: 72px;
  height: 72px;
  background: rgba(14, 165, 233, 0.1);
  border: 1px solid rgba(14, 165, 233, 0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 2rem;
  transition: var(--transition-spring);
}

.upload-area:hover .upload-icon-wrap {
  background: rgba(14, 165, 233, 0.15);
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 0 30px rgba(14, 165, 233, 0.2);
}

.upload-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.upload-subtitle {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.upload-hint {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.75rem;
  color: var(--text-muted);
  padding: 4px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 100px;
}

#file-input {
  display: none;
}

/* Preview after file selected */
.preview-wrap {
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.preview-wrap.visible { display: flex; }

.preview-image-container {
  position: relative;
  display: inline-block;
}

.preview-img {
  max-width: 100%;
  max-height: 260px;
  object-fit: contain;
  border-radius: 10px;
  box-shadow: var(--shadow-md);
  display: block;
}

.preview-remove-btn {
  position: absolute;
  top: -8px;
  right: -8px;
  width: 28px;
  height: 28px;
  background: var(--danger);
  border: 2px solid var(--bg-root);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 0.7rem;
  color: white;
  transition: var(--transition-spring);
  pointer-events: all;
}

.preview-remove-btn:hover {
  transform: scale(1.15);
}

.preview-file-info {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
}

.preview-info-chip {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.78rem;
  color: var(--text-secondary);
  font-weight: 500;
}

/* Background check result chip */
.bg-check-chip {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 600;
  animation: fadeIn 0.3s ease;
}

.bg-check-chip.match {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: var(--success);
}

.bg-check-chip.no-match {
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.3);
  color: var(--warning);
}

.bg-check-chip.checking {
  background: rgba(14, 165, 233, 0.1);
  border: 1px solid rgba(14, 165, 233, 0.3);
  color: var(--primary-dark);
}

/* Action Buttons Row */
.upload-actions {
  display: flex;
  gap: 10px;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 4px;
}

/* ============================================================
   PROGRESS SECTION
   ============================================================ */
.progress-section {
  padding: 24px;
  border-radius: var(--border-radius-lg);
  background: var(--bg-card);
  border: 1px solid var(--border);
  display: none;
  flex-direction: column;
  gap: 16px;
  animation: fadeIn 0.3s ease;
}

.progress-section.visible { display: flex; }

.progress-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.progress-label {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  font-weight: 600;
}

.progress-pct {
  font-size: 1.2rem;
  font-weight: 800;
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  min-width: 48px;
  text-align: right;
}

.progress-bar-track {
  width: 100%;
  height: 8px;
  background: rgba(0,0,0,0.06);
  border-radius: 100px;
  overflow: hidden;
  position: relative;
}

.progress-bar-fill {
  height: 100%;
  background: var(--grad-primary);
  border-radius: 100px;
  transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  width: 0%;
  position: relative;
}

.progress-bar-fill::after {
  content: '';
  position: absolute;
  top: 0; right: 0;
  width: 60px;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
  animation: shimmer 1.5s linear infinite;
  background-size: 200% 100%;
}

.progress-steps {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.progress-step {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.82rem;
  color: var(--text-muted);
  transition: var(--transition);
}

.progress-step.active   { color: var(--text-primary); }
.progress-step.complete { color: var(--success); }

.step-dot {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  flex-shrink: 0;
  transition: var(--transition);
}

.progress-step.active .step-dot {
  border-color: var(--primary);
  background: rgba(14, 165, 233, 0.15);
  box-shadow: 0 0 10px rgba(14, 165, 233, 0.3);
}

.progress-step.active .step-dot::after {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--primary);
  border-radius: 50%;
  animation: pulse-glow 1.2s ease infinite;
}

.progress-step.complete .step-dot {
  border-color: var(--success);
  background: rgba(16, 185, 129, 0.2);
}

/* ============================================================
   RESPONSIVE UPLOAD BUTTONS
   ============================================================ */
.upload-buttons {
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: 100%;
  max-width: 240px;
  margin: 0 auto;
}

.mobile-only { display: none !important; }

@media (max-width: 768px) {
  .mobile-only {
    display: inline-flex !important;
  }
  .desktop-only {
    display: none !important;
  }
  .upload-area {
    padding: 24px 16px;
  }
}