.section-header {
  margin-bottom: 2rem;
  
  .back-link {
    display: inline-flex;
    align-items: center;
    color: var(--text-muted);
    margin-bottom: 1rem;
    font-size: 0.9rem;
    
    .material-icons {
      font-size: 1.1rem;
      margin-right: 0.25rem;
    }
    
    &:hover {
      color: var(--primary-color);
    }
  }
  
  h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
  }
  
  p {
    color: var(--text-muted);
  }
}

.upload-area {
  border-bottom: 1px solid var(--border-color);
  background: var(--surface-color);
  transition: all 0.2s;
  
  &.drag-over {
    background: rgba(99, 102, 241, 0.1);
    box-shadow: inset 0 0 0 2px var(--primary-color);
  }

  /* Only show pointer on empty state or drag */
  &:not(.has-file) {
    cursor: pointer;
  }
}

.empty-state {
  padding: 3rem;
  text-align: center;
  
  .upload-icon {
    font-size: 4rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
  }
  
  h3 { margin-bottom: 0.5rem; }
  p { color: var(--text-muted); margin: 0; }
}

.viewer-wrapper {
  height: 350px;
  width: 100%;
  background: #0f172a;
  border-bottom: 1px solid var(--border-color);
}

.file-action-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1.5rem;
  background: var(--surface-color);
  
  .file-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-main);
    
    .material-icons { color: var(--primary-color); }
    .file-name { font-weight: 500; }
  }
  
  .btn-icon {
    background: none;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem;
    border-radius: 50%;
    transition: background 0.2s;
    
    .material-icons {
      font-size: 1.5rem;
      color: var(--text-muted);
    }
    
    &:hover {
      background: var(--surface-hover);
      .material-icons { color: var(--text-main); }
    }
    
    &.danger {
      &:hover {
        background: rgba(239, 68, 68, 0.2);
        .material-icons { color: #ef4444; } /* Red-500 */
      }
    }
  }
}

.strength-selector {
  padding: 1.5rem;
  
  h3 {
    font-size: 1.1rem;
    margin-bottom: 1rem;
  }
}

.strength-options {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.strength-card {
  display: flex;
  align-items: center;
  padding: 1rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s;
  
  .emoji {
    font-size: 2rem;
    margin-right: 1rem;
  }
  
  .info {
    h4 {
      margin: 0 0 0.25rem 0;
    }
    p {
      margin: 0;
      font-size: 0.9rem;
      color: var(--text-muted);
    }
  }
  
  &:hover {
    border-color: var(--primary-color);
    background: var(--surface-hover);
  }
  
  &.active {
    border-color: var(--primary-color);
    background: rgba(99, 102, 241, 0.1);
    
    .emoji {
      transform: scale(1.1);
    }
  }
}

.actions {
  padding: 1.5rem;
  border-top: 1px solid var(--border-color);
}

.btn-block {
  width: 100%;
  display: flex;
}

/* Results */
.result-card {
  text-align: center;
  background: linear-gradient(135deg, var(--surface-color) 0%, rgba(30, 41, 59, 0.8) 100%);
  
  h2 {
    color: var(--text-muted);
    font-size: 1.25rem;
    margin-bottom: 1rem;
  }
  
  .price-big {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 2rem;
  }
}

.specs-list {
  text-align: left;
  margin-bottom: 2rem;
  background: rgba(0,0,0,0.2);
  border-radius: var(--radius-md);
  padding: 1rem;
  
  .spec-item {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem 0;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    
    &:last-child {
      border-bottom: none;
    }
    
    span {
      color: var(--text-muted);
    }
  }
}

.note-box {
  background: rgba(236, 72, 153, 0.1);
  color: var(--secondary-color);
  padding: 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
}

.placeholder-card {
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  border-style: dashed;
  
  .material-icons {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.5;
  }
}

/* Animation */
.fade-in {
  animation: fadeIn 0.4s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}