/* AI Content Writer - Dark Theme with Orange Accent */

:root {
  /* Colors - Colorblind Safe Palette */
  --color-primary: #f97316;
  --color-primary-hover: #ea580c;
  --color-primary-light: rgba(249, 115, 22, 0.1);
  --color-success: #22c55e;
  --color-warning: #f59e0b;
  --color-error: #ef4444;
  --color-info: #22d3ee;

  /* Dark theme colors */
  --color-bg-primary: #0f0f0f;
  --color-bg-secondary: #1a1a1a;
  --color-bg-tertiary: #262626;
  --color-bg-hover: #333333;
  --color-border: #404040;
  --color-border-focus: #f97316;

  /* Text colors */
  --color-text-primary: #fafafa;
  --color-text-secondary: #a3a3a3;
  --color-text-muted: #737373;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;

  /* Border radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 200ms ease;
}

/* Light theme - System preference */
@media (prefers-color-scheme: light) {
  :root {
    --color-bg-primary: #ffffff;
    --color-bg-secondary: #fafafa;
    --color-bg-tertiary: #f5f5f5;
    --color-bg-hover: #e5e5e5;
    --color-border: #d4d4d4;

    --color-text-primary: #171717;
    --color-text-secondary: #404040;
    --color-text-muted: #737373;
  }
}

/* Manual theme override - Dark */
.theme-dark {
  --color-bg-primary: #0f0f0f;
  --color-bg-secondary: #1a1a1a;
  --color-bg-tertiary: #262626;
  --color-bg-hover: #333333;
  --color-border: #404040;

  --color-text-primary: #fafafa;
  --color-text-secondary: #a3a3a3;
  --color-text-muted: #737373;
}

/* Manual theme override - Light */
.theme-light {
  --color-bg-primary: #ffffff;
  --color-bg-secondary: #fafafa;
  --color-bg-tertiary: #f5f5f5;
  --color-bg-hover: #e5e5e5;
  --color-border: #d4d4d4;

  --color-text-primary: #171717;
  --color-text-secondary: #404040;
  --color-text-muted: #737373;
}

/* Reset and base styles */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  min-height: 100vh;
}

/* Skip link for accessibility */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-primary);
  color: #000;
  padding: var(--spacing-sm) var(--spacing-md);
  z-index: 1000;
  font-weight: 600;
  text-decoration: none;
  border-radius: 0 0 var(--radius-md) 0;
}

.skip-link:focus {
  top: 0;
}

/* Focus styles - keyboard only */
:focus {
  outline: none;
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-md) var(--spacing-lg);
}

/* Header */
header {
  background: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-lg) 0;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.logo h1 {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text-primary);
}

.logo h1 span {
  color: var(--color-primary);
}

.tagline {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  margin: 0;
}

/* Main content */
main {
  padding: var(--spacing-2xl) 0;
}

/* Content type tabs */
.tabs {
  display: flex;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-xl);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--spacing-xs);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.tab-btn {
  background: transparent;
  border: none;
  color: var(--color-text-secondary);
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 0.9375rem;
  font-weight: 500;
  cursor: pointer;
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  transition: all var(--transition-fast);
  white-space: nowrap;
  min-height: 44px;
  min-width: 44px;
  position: relative;
}

.tab-btn:hover {
  background: var(--color-bg-tertiary);
  color: var(--color-text-primary);
}

.tab-btn.active {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

.tab-btn.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px 2px 0 0;
}

/* Form layout */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
}

@media (max-width: 768px) {
  .form-grid {
    grid-template-columns: 1fr;
  }
}

.form-section {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
}

.section-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin: 0 0 var(--spacing-lg) 0;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.section-title .icon {
  color: var(--color-primary);
}

/* Form elements */
.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-group:last-child {
  margin-bottom: 0;
}

label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-sm);
}

input[type="text"],
textarea,
select {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 1rem;
  color: var(--color-text-primary);
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  min-height: 44px;
}

input[type="text"]:hover,
textarea:hover,
select:hover {
  border-color: var(--color-text-muted);
}

input[type="text"]:focus,
textarea:focus,
select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

textarea {
  resize: vertical;
  min-height: 120px;
  font-family: inherit;
}

select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23a3a3a3' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

/* Checkbox group for options */
.checkbox-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  min-height: 44px;
}

.checkbox-label:hover {
  border-color: var(--color-text-muted);
}

.checkbox-label:has(input:checked) {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}

.checkbox-label input {
  width: 18px;
  height: 18px;
  accent-color: var(--color-primary);
}

/* Radio button group */
.radio-group {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.radio-label {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  min-height: 44px;
  min-width: 80px;
  font-size: 0.875rem;
}

.radio-label:hover {
  border-color: var(--color-text-muted);
}

.radio-label:has(input:checked) {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.radio-label input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

/* Keywords input */
.keywords-input {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm);
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  min-height: 44px;
}

.keywords-input:focus-within {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

.keyword-tag {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--color-primary-light);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  color: var(--color-primary);
}

.keyword-tag button {
  background: none;
  border: none;
  color: var(--color-primary);
  cursor: pointer;
  padding: 0;
  font-size: 1.125rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
}

.keyword-tag button:hover {
  color: var(--color-error);
}

.keywords-input input {
  flex: 1;
  min-width: 100px;
  border: none;
  background: transparent;
  padding: var(--spacing-xs);
  font-size: 0.875rem;
  color: var(--color-text-primary);
}

.keywords-input input:focus {
  outline: none;
  box-shadow: none;
}

.keywords-input input::placeholder {
  color: var(--color-text-muted);
}

/* Variations selector */
.variations-selector {
  display: flex;
  gap: var(--spacing-sm);
}

.variation-btn {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.variation-btn:hover {
  border-color: var(--color-text-muted);
  color: var(--color-text-primary);
}

.variation-btn.active {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
  color: var(--color-primary);
}

/* Generate button */
.generate-btn {
  width: 100%;
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: 1rem;
  font-weight: 600;
  color: #000;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  min-height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-lg);
}

.generate-btn:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(249, 115, 22, 0.4);
}

.generate-btn:active:not(:disabled) {
  transform: translateY(0);
}

.generate-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.generate-btn .spinner {
  width: 20px;
  height: 20px;
  border: 2px solid rgba(0, 0, 0, 0.3);
  border-top-color: #000;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

/* Results section */
.results-section {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  min-height: 400px;
  display: flex;
  flex-direction: column;
}

.results-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-lg);
}

.results-empty {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  text-align: center;
  padding: var(--spacing-2xl);
}

.results-empty .icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
  opacity: 0.5;
}

.results-empty p {
  margin: 0;
  font-size: 1rem;
}

/* Result cards */
.result-cards {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.result-card {
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.result-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--color-bg-hover);
  border-bottom: 1px solid var(--color-border);
}

.result-card-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-secondary);
}

.result-card-actions {
  display: flex;
  gap: var(--spacing-xs);
}

.copy-btn {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
  font-size: 0.8125rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  min-height: 32px;
}

.copy-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.copy-btn.copied {
  border-color: var(--color-success);
  color: var(--color-success);
}

.result-card-content {
  padding: var(--spacing-md);
  color: var(--color-text-primary);
  font-size: 0.9375rem;
  line-height: 1.7;
}

/* Markdown rendering in results */
.result-card-content h1,
.result-card-content h2,
.result-card-content h3 {
  color: var(--color-text-primary);
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
}

.result-card-content h1:first-child,
.result-card-content h2:first-child,
.result-card-content h3:first-child {
  margin-top: 0;
}

.result-card-content h1 {
  font-size: 1.5rem;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--spacing-sm);
}

.result-card-content h2 {
  font-size: 1.25rem;
}

.result-card-content h3 {
  font-size: 1.125rem;
}

.result-card-content p {
  margin: 0 0 var(--spacing-md) 0;
}

.result-card-content p:last-child {
  margin-bottom: 0;
}

.result-card-content ul,
.result-card-content ol {
  margin: 0 0 var(--spacing-md) 0;
  padding-left: var(--spacing-lg);
}

.result-card-content li {
  margin-bottom: var(--spacing-xs);
}

.result-card-content strong {
  color: var(--color-primary);
}

.result-card-content em {
  font-style: italic;
}

.result-card-content code {
  background: var(--color-bg-hover);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  font-family: 'SF Mono', Monaco, Consolas, monospace;
  font-size: 0.875em;
}

.result-card-content blockquote {
  margin: var(--spacing-md) 0;
  padding-left: var(--spacing-md);
  border-left: 3px solid var(--color-primary);
  color: var(--color-text-secondary);
  font-style: italic;
}

/* Loading state */
.loading-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-2xl);
  gap: var(--spacing-md);
}

.loading-spinner {
  width: 48px;
  height: 48px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

.loading-text {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
}

/* Error state */
.error-state {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid var(--color-error);
  border-radius: var(--radius-md);
  color: var(--color-error);
}

.error-state .icon {
  font-size: 1.5rem;
}

/* Toast notifications */
.toast-container {
  position: fixed;
  bottom: var(--spacing-lg);
  right: var(--spacing-lg);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.toast {
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  animation: slideIn 200ms ease;
  max-width: 320px;
}

.toast.success {
  border-color: var(--color-success);
}

.toast.error {
  border-color: var(--color-error);
}

.toast .icon {
  font-size: 1.25rem;
}

.toast.success .icon {
  color: var(--color-success);
}

.toast.error .icon {
  color: var(--color-error);
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(100%);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Footer */
footer {
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-lg) 0;
  margin-top: auto;
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

.footer-links {
  display: flex;
  gap: var(--spacing-lg);
}

.footer-links a {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-primary);
}

/* Responsive adjustments */
@media (max-width: 640px) {
  .container {
    padding: var(--spacing-sm) var(--spacing-md);
  }

  .tabs {
    gap: 0;
  }

  .tab-btn {
    padding: var(--spacing-sm);
    font-size: 0.8125rem;
  }

  .form-section {
    padding: var(--spacing-md);
  }

  .radio-group {
    flex-direction: column;
  }

  .radio-label {
    width: 100%;
  }

  .header-content {
    flex-direction: column;
    text-align: center;
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --color-border: #666;
    --color-text-secondary: #ccc;
  }
}

/* Theme switcher */
.theme-switcher {
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.theme-btn {
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 500;
  transition: background var(--transition-fast), border-color var(--transition-fast);
  min-height: 44px;
}

.theme-btn:hover {
  background: var(--color-bg-secondary);
  border-color: var(--color-primary);
}

.theme-btn[aria-pressed="true"] {
  background: var(--color-primary);
  color: #000;
  border-color: var(--color-primary);
  font-weight: 600;
}

/* Print styles */
@media print {
  header,
  footer,
  .form-section,
  .tabs,
  .theme-switcher {
    display: none;
  }

  .results-section {
    border: none;
    padding: 0;
  }

  .result-card {
    break-inside: avoid;
    border: 1px solid #000;
  }
}