/**
 * Hex Tool Styles
 * Tool-specific styles for the hex encoder/decoder
 */

.hex-tool {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0;
  animation: fadeIn 0.6s ease-out;
}

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

.hex-tool-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-8);
}

@media (max-width: 768px) {
  .hex-tool-grid {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
}

.input-section, .output-section {
  background: var(--color-bg-primary);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.input-section::before,
.output-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--color-accent-gradient);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.input-section:hover,
.output-section:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-xl), var(--shadow-glow);
  transform: translateY(-2px);
}

.input-section:hover::before,
.output-section:hover::before {
  opacity: 1;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-3);
  border-bottom: 2px solid var(--color-border-light);
}

.section-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin: 0;
  color: var(--color-text-primary);
  letter-spacing: -0.5px;
  position: relative;
  padding-left: var(--space-4);
}

.section-title::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 24px;
  background: var(--color-accent-gradient);
  border-radius: 2px;
}

.format-options {
  display: flex;
  gap: var(--space-4);
  margin-bottom: var(--space-5);
  flex-wrap: wrap;
  align-items: center;
}

.format-group {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--color-bg-secondary);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-lg);
  border: 2px solid var(--color-border);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.format-group:hover {
  border-color: var(--color-accent);
  background: var(--color-accent-light);
  transform: translateY(-1px);
}

.format-group input[type="radio"],
.format-group input[type="checkbox"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
  accent-color: var(--color-accent);
}

.format-group label {
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  cursor: pointer;
  font-weight: 500;
  user-select: none;
}

.format-group input:checked + label {
  color: var(--color-accent);
  font-weight: 600;
}

.text-area {
  width: 100%;
  min-height: 150px;
  padding: var(--space-4);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  font-family: var(--font-family-mono);
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
  resize: vertical;
  background: var(--color-bg-secondary);
  color: var(--color-text-primary);
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-inner);
}

.text-area:focus {
  outline: none;
  border-color: var(--color-accent);
  background: var(--color-bg-primary);
  box-shadow: var(--shadow-md), 0 0 0 4px var(--color-focus-ring);
  transform: translateY(-1px);
}

.text-area.has-error {
  border-color: var(--color-error);
}

.text-area.has-warning {
  border-color: var(--color-warning);
}

.action-buttons {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-6);
  flex-wrap: wrap;
}

.btn-primary {
  background: var(--color-accent-gradient);
  color: white;
  border: none;
  padding: var(--space-4) var(--space-8);
  border-radius: var(--radius-lg);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
  font-size: var(--font-size-base);
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
  letter-spacing: 0.3px;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transition: left var(--transition-slow);
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px) scale(1.02);
  box-shadow: var(--shadow-xl), var(--shadow-glow);
}

.btn-primary:hover::before {
  left: 100%;
}

.btn-primary:active:not(:disabled) {
  transform: translateY(0) scale(0.98);
}

.btn-primary:disabled {
  background: var(--color-border-dark);
  cursor: not-allowed;
  transform: none;
  opacity: 0.6;
}

.btn-secondary {
  background: var(--color-bg-secondary);
  color: var(--color-text-primary);
  border: 2px solid var(--color-border);
  padding: var(--space-4) var(--space-6);
  border-radius: var(--radius-lg);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
  font-size: var(--font-size-base);
  letter-spacing: 0.3px;
}

.btn-secondary:hover {
  background: var(--color-accent-light);
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.message {
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  margin: var(--space-3) 0;
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
  border-left: 4px solid;
  backdrop-filter: var(--glass-blur);
  animation: slideIn 0.3s ease-out;
  box-shadow: var(--shadow-sm);
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(-10px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.message.error {
  background: var(--color-error-light);
  color: var(--color-error-dark);
  border-color: var(--color-error);
}

.message.warning {
  background: var(--color-warning-light);
  color: var(--color-warning-dark);
  border-color: var(--color-warning);
}

.message.success {
  background: var(--color-success-light);
  color: var(--color-success-dark);
  border-color: var(--color-success);
}

.message.info {
  background: var(--color-info-light);
  color: var(--color-info-dark);
  border-color: var(--color-info);
}

.info-panel {
  background: var(--color-bg-primary);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  border: 1px solid var(--color-border-light);
  margin-bottom: var(--space-8);
  box-shadow: var(--shadow-md);
  backdrop-filter: var(--glass-blur);
  transition: all var(--transition-normal);
}

.info-panel:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--space-6);
}

.info-item {
  text-align: center;
  padding: var(--space-3);
  border-radius: var(--radius-md);
  background: var(--color-bg-secondary);
  transition: all var(--transition-fast);
}

.info-item:hover {
  background: var(--color-accent-light);
  transform: scale(1.05);
}

.info-label {
  display: block;
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2);
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 1px;
}

.info-value {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-accent);
  font-family: var(--font-family-mono);
}

.history-panel {
  background: var(--color-bg-primary);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-normal);
}

.history-panel:hover {
  box-shadow: var(--shadow-xl);
}

.history-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-4);
  border-bottom: 2px solid var(--color-border-light);
}

.history-header h3 {
  background: var(--color-accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 700;
  font-size: var(--font-size-xl);
}

.history-list {
  max-height: 400px;
  overflow-y: auto;
  padding-right: var(--space-2);
}

.history-list::-webkit-scrollbar {
  width: 8px;
}

.history-list::-webkit-scrollbar-track {
  background: var(--color-bg-secondary);
  border-radius: 4px;
}

.history-list::-webkit-scrollbar-thumb {
  background: var(--color-border-dark);
  border-radius: 4px;
  transition: background var(--transition-fast);
}

.history-list::-webkit-scrollbar-thumb:hover {
  background: var(--color-accent);
}

.history-item {
  padding: var(--space-4);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-3);
  background: var(--color-bg-secondary);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.history-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--color-accent-gradient);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.history-item:hover {
  border-color: var(--color-accent);
  transform: translateX(4px);
  box-shadow: var(--shadow-md);
  background: var(--color-bg-primary);
}

.history-item:hover::before {
  opacity: 1;
}

.history-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
  font-size: 0.8rem;
  color: var(--color-text-secondary);
}

.history-direction {
  background: var(--color-primary);
  color: white;
  padding: 0.25rem 0.5rem;
  border-radius: 12px;
  font-size: 0.7rem;
  font-weight: 500;
}

.history-content {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.4;
  word-break: break-all;
}

.history-input {
  color: var(--color-text);
  margin-bottom: 0.25rem;
}

.history-output {
  color: var(--color-text-secondary);
}

.history-empty {
  text-align: center;
  color: var(--color-text-secondary);
  font-style: italic;
  padding: 2rem;
}

.loading-indicator {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-text-secondary);
}

.spinner {
  width: 16px;
  height: 16px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* Accessibility enhancements */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Focus indicators */
.btn:focus,
.text-area:focus,
input:focus,
select:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .text-area,
  .btn {
    border-width: 2px;
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .spinner {
    animation: none;
  }
}