/**
 * Input Area Enhancements Styles
 * Task 5: Enhance input area
 * Requirements: 4.1, 4.2, 4.5, 13.1-13.4, 5.1-5.5
 */

/* Input Area Container */
.input-area {
  position: relative;
  padding: var(--space-4, 1rem) var(--space-6, 1.5rem);
  background: transparent;
  border-top: none;
}

/* Quick Actions - Task 5.3 */
.quick-actions {
  display: flex;
  gap: var(--space-3, 0.75rem);
  padding: var(--space-3, 0.75rem) 0;
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--border, #334155) transparent;
  transition: opacity 0.2s ease, transform 0.2s ease;
  max-width: 800px; /* Match input width */
  margin: 0 auto; /* Center the quick actions */
  /* Removed background - transparent */
}

.quick-actions::-webkit-scrollbar {
  height: 4px;
}

.quick-actions::-webkit-scrollbar-track {
  background: transparent;
}

.quick-actions::-webkit-scrollbar-thumb {
  background: var(--border, #334155);
  border-radius: 2px;
}

.quick-action-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2, 0.5rem);
  padding: var(--space-2, 0.5rem) var(--space-4, 1rem);
  background: transparent;
  border: none; /* Removed border */
  border-radius: var(--radius-full, 9999px);
  color: var(--text-secondary, #94a3b8);
  font-size: var(--text-sm, 0.875rem);
  font-weight: var(--font-medium, 500);
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
  flex-shrink: 0;
}

.quick-action-chip:hover {
  background: var(--bg-hover, #334155);
  color: var(--text-primary, #f1f5f9);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.2);
}

.quick-action-chip:active {
  transform: translateY(0);
}

.quick-action-chip i {
  font-size: var(--text-base, 1rem);
  color: var(--primary, #6366f1);
}

/* File Upload Zone - Task 5.2 */
.file-upload-zone {
  position: relative;
  padding: var(--space-4, 1rem);
  margin: 0 auto var(--space-4, 1rem); /* Center and add bottom margin */
  max-width: 800px; /* Match input width */
  background: var(--bg-main, #0f172a);
  border: 2px dashed var(--border, #334155);
  border-radius: var(--radius-lg, 0.75rem);
  text-align: center;
  cursor: pointer;
  transition: all 0.3s ease;
}

.file-upload-zone:hover {
  border-color: var(--primary, #6366f1);
  background: var(--surface-hover, rgba(99, 102, 241, 0.05));
}

.file-upload-zone[data-state="dragover"] {
  border-color: var(--primary, #6366f1);
  background: var(--surface-hover, rgba(99, 102, 241, 0.1));
  transform: scale(1.02);
}

.file-upload-zone i {
  font-size: var(--text-xl, 1.25rem);
  color: var(--text-secondary, #94a3b8);
  margin-right: var(--space-2, 0.5rem);
}

.file-upload-zone span {
  color: var(--text-secondary, #94a3b8);
  font-size: var(--text-sm, 0.875rem);
}

/* File Upload Progress */
.file-upload-progress {
  display: flex;
  flex-direction: column;
  gap: var(--space-3, 0.75rem);
}

.file-info {
  display: flex;
  align-items: center;
  gap: var(--space-3, 0.75rem);
}

.file-info i {
  font-size: var(--text-2xl, 1.5rem);
  color: var(--danger, #ef4444);
  margin: 0;
}

.file-details {
  flex: 1;
  text-align: left;
}

.file-name {
  font-size: var(--text-sm, 0.875rem);
  font-weight: var(--font-semibold, 600);
  color: var(--text-primary, #f1f5f9);
  margin-bottom: var(--space-1, 0.25rem);
  word-break: break-word;
}

.file-size {
  font-size: var(--text-xs, 0.75rem);
  color: var(--text-secondary, #94a3b8);
}

.progress-bar {
  width: 100%;
  height: 8px;
  background: var(--bg-card, #1e293b);
  border-radius: var(--radius-full, 9999px);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary, #6366f1), var(--secondary, #10b981));
  border-radius: var(--radius-full, 9999px);
  transition: width 0.3s ease;
}

.progress-text {
  font-size: var(--text-xs, 0.75rem);
  color: var(--text-secondary, #94a3b8);
  text-align: center;
}

/* File Uploaded State */
.file-uploaded {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3, 0.75rem);
}

.file-remove-btn {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--danger, #ef4444);
  border: none;
  border-radius: var(--radius-md, 0.5rem);
  color: white;
  cursor: pointer;
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.file-remove-btn:hover {
  background: var(--danger-dark, #dc2626);
  transform: scale(1.1);
}

.file-remove-btn:active {
  transform: scale(0.95);
}

/* File Error State */
.file-error {
  display: flex;
  align-items: center;
  gap: var(--space-3, 0.75rem);
  padding: var(--space-3, 0.75rem);
  background: rgba(239, 68, 68, 0.1);
  border-radius: var(--radius-md, 0.5rem);
}

.file-error i {
  font-size: var(--text-xl, 1.25rem);
  color: var(--danger, #ef4444);
  margin: 0;
}

.error-message {
  flex: 1;
  font-size: var(--text-sm, 0.875rem);
  color: var(--danger, #ef4444);
  text-align: left;
}

.error-dismiss-btn {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  color: var(--danger, #ef4444);
  cursor: pointer;
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.error-dismiss-btn:hover {
  background: rgba(239, 68, 68, 0.2);
  border-radius: var(--radius-sm, 0.375rem);
}

/* Text Input Wrapper - Task 5.1 */
.text-input-wrapper {
  position: relative;
  max-width: 800px; /* Reduced width */
  margin: 0 auto; /* Center the input */
  background: transparent;
  border: none;
  border-radius: var(--radius-xl, 1rem);
  transition: all 0.3s ease;
}

.text-input-wrapper:focus-within {
  border-color: transparent;
  box-shadow: none;
}

.text-input {
  width: 100%;
  min-height: 44px;
  max-height: 132px;
  padding: var(--space-3, 0.75rem) var(--space-4, 1rem);
  background: transparent;
  border: none;
  color: var(--text-primary, #f1f5f9);
  font-size: var(--text-base, 1rem);
  font-family: inherit;
  line-height: 1.5;
  resize: none;
  overflow-y: hidden;
  transition: height 0.2s ease;
}

.text-input:focus {
  outline: none;
}

.text-input::placeholder {
  color: var(--text-secondary, #94a3b8);
}

/* Text Input Wrapper - Position send button inline */
.text-input-wrapper {
  position: relative;
}

.send-btn {
  position: absolute;
  right: 8px;
  bottom: 8px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary, #6366f1), var(--primary-dark, #4f46e5));
  border: none;
  border-radius: var(--radius-lg, 0.75rem);
  color: white;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.send-btn:hover:not(:disabled) {
  transform: scale(1.05);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

.send-btn:active:not(:disabled) {
  transform: scale(0.95);
}

.send-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  box-shadow: none;
}

.send-btn i {
  font-size: var(--text-lg, 1.125rem);
}

/* Input Disclaimer */
.input-disclaimer {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2, 0.5rem);
  margin-top: var(--space-3, 0.75rem);
  font-size: var(--text-xs, 0.75rem);
  color: var(--text-tertiary, #64748b);
}

.input-disclaimer i {
  font-size: var(--text-sm, 0.875rem);
}

/* Keyboard Shortcuts Hint */
.keyboard-shortcuts-hint {
  position: absolute;
  bottom: 100%;
  right: 0;
  margin-bottom: var(--space-2, 0.5rem);
  padding: var(--space-2, 0.5rem) var(--space-3, 0.75rem);
  background: var(--bg-card, #1e293b);
  border: 1px solid var(--border, #334155);
  border-radius: var(--radius-md, 0.5rem);
  font-size: var(--text-xs, 0.75rem);
  color: var(--text-secondary, #94a3b8);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.text-input:focus ~ .keyboard-shortcuts-hint {
  opacity: 1;
}

.keyboard-shortcuts-hint kbd {
  padding: 2px 6px;
  background: var(--bg-main, #0f172a);
  border: 1px solid var(--border, #334155);
  border-radius: var(--radius-sm, 0.375rem);
  font-family: monospace;
  font-size: var(--text-xs, 0.75rem);
}

/* Responsive Design */
@media (max-width: 768px) {
  .input-area {
    padding: var(--space-3, 0.75rem);
  }
  
  .quick-actions {
    padding: var(--space-3, 0.75rem) 0;
    gap: var(--space-2, 0.5rem);
  }
  
  .quick-action-chip {
    padding: var(--space-2, 0.5rem) var(--space-3, 0.75rem);
    font-size: var(--text-xs, 0.75rem);
  }
  
  .quick-action-chip i {
    font-size: var(--text-sm, 0.875rem);
  }
  
  .file-upload-zone {
    padding: var(--space-3, 0.75rem);
    margin-bottom: var(--space-3, 0.75rem);
  }
  
  .text-input {
    font-size: var(--text-sm, 0.875rem);
  }
  
  .send-btn {
    width: 40px;
    height: 40px;
  }
  
  .keyboard-shortcuts-hint {
    display: none;
  }
}

/* Animations */
@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.quick-action-chip {
  animation: slideInUp 0.3s ease backwards;
}

.quick-action-chip:nth-child(1) { animation-delay: 0.05s; }
.quick-action-chip:nth-child(2) { animation-delay: 0.1s; }
.quick-action-chip:nth-child(3) { animation-delay: 0.15s; }
.quick-action-chip:nth-child(4) { animation-delay: 0.2s; }

/* Accessibility */
.sr-only {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* Focus Visible */
.quick-action-chip:focus-visible,
.file-remove-btn:focus-visible,
.error-dismiss-btn:focus-visible,
.send-btn:focus-visible {
  outline: 2px solid var(--primary, #6366f1);
  outline-offset: 2px;
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  .quick-action-chip,
  .text-input-wrapper,
  .send-btn,
  .file-upload-zone {
    transition: none;
    animation: none;
  }
  
  .quick-action-chip:hover {
    transform: none;
  }
  
  .send-btn:hover:not(:disabled) {
    transform: none;
  }
}

/* Dark Mode Support (if using data-theme attribute) */
[data-theme="light"] {
  --bg-main: #ffffff;
  --bg-card: #f8fafc;
  --surface: #ffffff;
  --surface-hover: rgba(99, 102, 241, 0.05);
  --text-primary: #0f172a;
  --text-secondary: #64748b;
  --text-tertiary: #94a3b8;
  --border: #e2e8f0;
}