/* ============================================
   WhatsApp Chat Reader — Upload Screen
   Glassmorphism card + drag-drop zone
   ============================================ */

.upload-body,
.upload-screen-body {
  flex: 1;
  display: flex !important;
  flex-direction: column !important;
  align-items: center !important;
  justify-content: center !important;
  width: 100%;
  min-height: calc(100dvh - var(--header-height));
  padding: 36px 24px;
  overflow-y: auto;
}

.upload-card {
  width: 100%;
  max-width: 780px;
  margin: auto;
  background: var(--upload-glass-bg);
  backdrop-filter: blur(28px) saturate(180%);
  -webkit-backdrop-filter: blur(28px) saturate(180%);
  border: 1px solid var(--upload-glass-border);
  border-radius: var(--radius-xl);
  padding: 44px 40px;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.55), 0 0 40px rgba(0, 229, 170, 0.12), inset 0 1px 1px rgba(255, 255, 255, 0.15);
  position: relative;
  overflow: hidden;
  animation: fadeIn var(--transition-slow);
  display: flex;
  flex-direction: column;
  gap: 28px;
}

/* Holographic Cyber-Emerald Accent Glow */
.upload-card::before {
  content: '';
  position: absolute;
  top: -60%;
  left: -60%;
  width: 220%;
  height: 220%;
  background: radial-gradient(circle at 50% 0%, var(--accent), transparent 60%);
  opacity: 0.12;
  pointer-events: none;
  animation: quantumRotate 15s infinite linear;
}

@keyframes quantumRotate {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.upload-card-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
  text-align: center;
  margin-bottom: 8px;
  position: relative;
  letter-spacing: -0.5px;
}

.upload-card-subtitle {
  font-size: var(--font-size-secondary);
  color: var(--text-secondary);
  text-align: center;
  margin-bottom: 30px;
  line-height: 1.5;
  position: relative;
}

/* Upload icon with quantum float animation */
.upload-icon-wrap {
  text-align: center;
  margin-bottom: 24px;
  position: relative;
}

.upload-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 82px;
  height: 82px;
  border-radius: var(--radius-circle);
  background: var(--gradient-accent);
  box-shadow: 0 12px 30px rgba(0, 229, 170, 0.45), inset 0 2px 3px rgba(255,255,255,0.3);
  animation: uploadFloat 3.5s ease-in-out infinite;
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.upload-icon svg {
  width: 40px;
  height: 40px;
  fill: #0A1116;
  filter: drop-shadow(0 2px 4px rgba(255,255,255,0.4));
}

@keyframes uploadFloat {
  0%, 100% {
    transform: translateY(0) scale(1);
    box-shadow: 0 12px 30px rgba(0, 229, 170, 0.45);
  }
  50% {
    transform: translateY(-10px) scale(1.06);
    box-shadow: 0 20px 40px rgba(0, 229, 170, 0.65);
  }
}

/* Drag-drop zone - Holographic Scan Grid */
.upload-zone {
  border: 2px dashed rgba(0, 229, 170, 0.4);
  border-radius: var(--radius-lg);
  padding: 46px 26px;
  text-align: center;
  transition: all var(--transition-spring);
  cursor: pointer;
  position: relative;
  background: radial-gradient(circle at center, rgba(0, 229, 170, 0.04) 0%, transparent 75%);
}

.upload-zone:hover {
  border-color: var(--accent);
  background-color: rgba(0, 229, 170, 0.08);
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(0, 229, 170, 0.15), inset 0 0 25px rgba(0, 229, 170, 0.08);
}

.upload-zone.drag-over {
  border-color: var(--accent);
  background-color: rgba(0, 229, 170, 0.14);
  border-style: solid;
  transform: scale(1.03);
  box-shadow: 0 15px 40px rgba(0, 229, 170, 0.25), inset 0 0 35px rgba(0, 229, 170, 0.15);
}

.upload-zone.drag-over .upload-zone-text {
  color: var(--accent);
}

/* Animated dashed border on drag-over */
@keyframes dashMove {
  to {
    stroke-dashoffset: -20;
  }
}

.upload-zone-icon {
  margin-bottom: 12px;
  color: var(--text-secondary);
}

.upload-zone-icon svg {
  width: 40px;
  height: 40px;
  fill: currentColor;
}

.upload-zone.drag-over .upload-zone-icon {
  color: var(--accent);
}

.upload-zone-text {
  font-size: var(--font-size-body);
  color: var(--text-secondary);
  margin-bottom: 8px;
  transition: color var(--transition-base);
}

.upload-zone-text strong {
  color: var(--accent);
  font-weight: 600;
}

.upload-zone-hint {
  font-size: var(--font-size-small);
  color: var(--text-secondary);
  opacity: 0.7;
}

/* Hidden file input */
.upload-file-input {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

/* Format guidance */
.upload-format-guide {
  margin-top: 20px;
  padding: 12px 16px;
  background-color: var(--hover);
  border-radius: var(--radius-md);
  position: relative;
}

.upload-format-title {
  font-size: var(--font-size-small);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.upload-format-title svg {
  width: 14px;
  height: 14px;
  fill: var(--accent);
}

.upload-format-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.upload-format-list li {
  font-size: var(--font-size-small);
  color: var(--text-secondary);
  padding: 2px 0;
  padding-left: 16px;
  position: relative;
  line-height: 1.4;
}

.upload-format-list li::before {
  content: '•';
  position: absolute;
  left: 4px;
  color: var(--accent);
}

/* Upload progress */
.upload-progress-wrap {
  margin-top: 20px;
  display: none;
  position: relative;
}

.upload-progress-wrap.active {
  display: block;
}

.upload-progress-track {
  width: 100%;
  height: 4px;
  background-color: var(--border);
  border-radius: 2px;
  overflow: hidden;
}

.upload-progress-bar {
  height: 100%;
  background-color: var(--accent);
  border-radius: 2px;
  width: 0%;
  transition: width 0.3s ease;
}

.upload-progress-text {
  font-size: var(--font-size-small);
  color: var(--text-secondary);
  text-align: center;
  margin-top: 8px;
}

/* File selected state */
.upload-file-info {
  display: none;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
  padding: 10px 14px;
  background-color: var(--hover);
  border-radius: var(--radius-md);
  position: relative;
}

.upload-file-info.active {
  display: flex;
}

.upload-file-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background-color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.upload-file-icon svg {
  width: 18px;
  height: 18px;
  fill: #fff;
}

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

.upload-file-name {
  font-size: var(--font-size-secondary);
  color: var(--text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.upload-file-size {
  font-size: var(--font-size-tiny);
  color: var(--text-secondary);
}

.upload-file-remove {
  width: 28px;
  height: 28px;
  border: none;
  background: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-circle);
  color: var(--text-secondary);
  transition: background-color var(--transition-fast), color var(--transition-fast);
  flex-shrink: 0;
}

.upload-file-remove:hover {
  background-color: var(--hover-strong);
  color: var(--danger);
}

.upload-file-remove svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

/* Upload button */
.upload-submit-btn {
  width: 100%;
  margin-top: 16px;
  padding: 12px;
  display: none;
}

.upload-submit-btn.active {
  display: flex;
}

/* Upload Instructions Guide */
.upload-info {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  text-align: left;
  margin-top: 8px;
  transition: border-color var(--transition-base);
}

.upload-info:hover {
  border-color: rgba(0, 229, 170, 0.35);
}

.upload-info h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin-top: 0;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.upload-info h3::before {
  content: '💡';
  font-size: 18px;
}

.upload-info ol {
  margin: 0;
  padding-left: 20px;
  color: var(--text-secondary);
  font-size: 14.2px;
  line-height: 1.8;
}

.upload-info ol li {
  margin-bottom: 6px;
}

.upload-info ol li strong {
  color: #00E5AA;
  font-weight: 600;
  background: rgba(0, 229, 170, 0.12);
  padding: 2px 6px;
  border-radius: 4px;
}