/* ==========================================
   PROMPT-SPACE — APPLE/iOS STYLE
   ========================================== */

/* CSS Variables for Light/Dark Theme */
:root {
  /* Colors - Light Theme */
  --color-primary: #007AFF;
  --color-primary-hover: #0051D5;
  --color-background: #F5F5F7;
  --color-surface: #FFFFFF;
  --color-surface-secondary: #FAFAFA;
  --color-text-primary: #1D1D1F;
  --color-text-secondary: #6E6E73;
  --color-text-tertiary: #86868B;
  --color-border: #D2D2D7;
  --color-border-light: #E5E5EA;
  --color-shadow: rgba(0, 0, 0, 0.08);
  --color-shadow-hover: rgba(0, 0, 0, 0.12);
  --color-success: #34C759;
  --color-error: #FF3B30;
  
  /* Spacing System (8px base) */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  
  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Inter', 'Segoe UI', system-ui, sans-serif;
  --font-size-xs: 12px;
  --font-size-sm: 14px;
  --font-size-base: 16px;
  --font-size-lg: 20px;
  --font-size-xl: 24px;
  --font-size-2xl: 32px;
  --font-size-3xl: 40px;
  
  --font-weight-light: 300;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.6;
  --line-height-loose: 1.8;
  
  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 200ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-base: 300ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 400ms cubic-bezier(0.16, 1, 0.3, 1);
  
  /* Shadows */
  --shadow-sm: 0 1px 3px var(--color-shadow);
  --shadow-md: 0 4px 12px var(--color-shadow);
  --shadow-lg: 0 8px 24px var(--color-shadow);
  --shadow-xl: 0 16px 48px var(--color-shadow-hover);
}

/* Dark Theme */
[data-theme="dark"] {
  --color-primary: #0A84FF;
  --color-primary-hover: #409CFF;
  --color-background: #000000;
  --color-surface: #1C1C1E;
  --color-surface-secondary: #2C2C2E;
  --color-text-primary: #FFFFFF;
  --color-text-secondary: #EBEBF0;
  --color-text-tertiary: #98989D;
  --color-border: #38383A;
  --color-border-light: #48484A;
  --color-shadow: rgba(0, 0, 0, 0.3);
  --color-shadow-hover: rgba(0, 0, 0, 0.5);
}

/* ==========================================
   BASE STYLES
   ========================================== */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-regular);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-primary);
  background-color: var(--color-background);
  transition: background-color var(--transition-base), color var(--transition-base);
}

/* ==========================================
   LAYOUT
   ========================================== */

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--space-6);
  }
}

@media (min-width: 1024px) {
  .container {
    padding: 0 var(--space-8);
  }
}

/* ==========================================
   HEADER
   ========================================== */

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-surface);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--color-border-light);
  transition: background-color var(--transition-base), border-color var(--transition-base);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  padding: 0 var(--space-4);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text-primary);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  transition: opacity var(--transition-fast);
}

.logo:hover {
  opacity: 0.7;
}

.logo-icon {
  font-size: 24px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

/* Theme Toggle */
.theme-toggle {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: var(--radius-full);
  background-color: transparent;
  color: var(--color-text-primary);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.theme-toggle:hover {
  background-color: var(--color-surface-secondary);
}

/* Search Container */
.search-container {
  position: relative;
  width: 100%;
  max-width: 400px;
}

.search-input {
  width: 100%;
  height: 40px;
  padding: 0 var(--space-4) 0 var(--space-10);
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  background-color: var(--color-surface-secondary);
  border: 1px solid transparent;
  border-radius: var(--radius-full);
  outline: none;
  transition: all var(--transition-fast);
}

.search-input:focus {
  background-color: var(--color-surface);
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(0, 122, 255, 0.1);
}

.search-icon {
  position: absolute;
  left: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-tertiary);
  pointer-events: none;
}

.search-clear {
  position: absolute;
  right: var(--space-2);
  top: 50%;
  transform: translateY(-50%);
  width: 24px;
  height: 24px;
  display: none;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: var(--radius-full);
  background-color: var(--color-text-tertiary);
  color: var(--color-surface);
  cursor: pointer;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.search-clear.visible {
  display: flex;
  opacity: 1;
}

.search-clear:hover {
  opacity: 0.8;
}

/* Search Results Dropdown */
.search-results {
  position: absolute;
  top: calc(100% + var(--space-2));
  left: 0;
  right: 0;
  max-height: 400px;
  overflow-y: auto;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all var(--transition-fast);
}

.search-results.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.search-result-item {
  padding: var(--space-4);
  cursor: pointer;
  border-bottom: 1px solid var(--color-border-light);
  transition: background-color var(--transition-fast);
}

.search-result-item:last-child {
  border-bottom: none;
}

.search-result-item:hover {
  background-color: var(--color-surface-secondary);
}

.search-result-category {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: var(--space-1);
}

.search-result-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  margin-bottom: var(--space-1);
}

.search-result-description {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-normal);
}

.search-no-results {
  padding: var(--space-6);
  text-align: center;
  color: var(--color-text-tertiary);
}

/* ==========================================
   HERO SECTION
   ========================================== */

.hero-section {
  padding: var(--space-16) 0 var(--space-12);
  text-align: center;
}

.hero-title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
  letter-spacing: -0.02em;
}

.hero-description {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-regular);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

@media (max-width: 768px) {
  .hero-section {
    padding: var(--space-12) 0 var(--space-8);
  }
  
  .hero-title {
    font-size: var(--font-size-2xl);
  }
  
  .hero-description {
    font-size: var(--font-size-base);
  }
}

/* ==========================================
   BREADCRUMBS
   ========================================== */

.breadcrumbs {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-4) 0;
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}

.breadcrumb-link {
  color: var(--color-text-tertiary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.breadcrumb-link:hover {
  color: var(--color-text-primary);
}

.breadcrumb-separator {
  color: var(--color-text-tertiary);
}

.breadcrumb-current {
  color: var(--color-text-primary);
  font-weight: var(--font-weight-medium);
}

/* ==========================================
   PAGE HEADER
   ========================================== */

.page-header {
  padding: var(--space-8) 0 var(--space-6);
}

.page-title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
  letter-spacing: -0.01em;
}

.page-subtitle {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
}

/* ==========================================
   BACK BUTTON
   ========================================== */

.back-button {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  margin-bottom: var(--space-6);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  background-color: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.back-button:hover {
  color: var(--color-text-primary);
  background-color: var(--color-surface-secondary);
  border-color: var(--color-border);
}

/* ==========================================
   CARDS GRID
   ========================================== */

.categories-grid,
.prompts-list {
  display: grid;
  gap: var(--space-4);
  margin-bottom: var(--space-12);
}

.categories-grid {
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

.prompts-list {
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .categories-grid {
    gap: var(--space-5);
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  }
  
  .prompts-list {
    gap: var(--space-4);
  }
}

/* ==========================================
   CARD COMPONENT
   ========================================== */

.card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  cursor: pointer;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-border);
}

.card:active {
  transform: translateY(0);
}

/* Category Card */
.category-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--space-8) var(--space-6);
}

.category-icon {
  font-size: 48px;
  margin-bottom: var(--space-4);
}

.category-name {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.category-count {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
  font-weight: var(--font-weight-regular);
}

/* Prompt Card */
.prompt-card {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-4);
  padding: var(--space-5);
}

.prompt-content {
  flex: 1;
}

.prompt-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
  line-height: var(--line-height-normal);
}

.prompt-description {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

.prompt-copy-btn {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-surface-secondary);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
  opacity: 0;
}

.prompt-card:hover .prompt-copy-btn {
  opacity: 1;
}

.prompt-copy-btn:hover {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
  transform: scale(1.05);
}

.prompt-copy-btn:active {
  transform: scale(0.95);
}

/* ==========================================
   BUTTONS
   ========================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--color-primary);
  color: white;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background-color: var(--color-primary-hover);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background-color: var(--color-surface-secondary);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  background-color: var(--color-border-light);
}

.btn-suggest {
  padding: var(--space-4) var(--space-6);
  font-size: var(--font-size-base);
}

/* ==========================================
   MODAL
   ========================================== */

.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.modal-overlay.visible {
  opacity: 1;
  visibility: visible;
}

.modal {
  position: relative;
  width: 90%;
  max-width: 800px;
  max-height: 90vh;
  background-color: var(--color-surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  transform: scale(0.95);
  transition: transform var(--transition-base);
}

.modal-overlay.visible .modal {
  transform: scale(1);
}

.modal-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: var(--space-6);
  border-bottom: 1px solid var(--color-border-light);
}

.modal-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  line-height: var(--line-height-normal);
  padding-right: var(--space-4);
}

.modal-close {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: var(--radius-full);
  background-color: var(--color-surface-secondary);
  color: var(--color-text-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.modal-close:hover {
  background-color: var(--color-border-light);
}

.modal-body {
  padding: var(--space-6);
  max-height: calc(90vh - 200px);
  overflow-y: auto;
}

.modal-description {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-6);
}

.modal-prompt-wrapper {
  position: relative;
}

.modal-prompt-label {
  display: block;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: var(--space-3);
}

.modal-prompt-content {
  font-family: 'SF Mono', 'Monaco', 'Courier New', monospace;
  font-size: var(--font-size-sm);
  line-height: var(--line-height-loose);
  color: var(--color-text-primary);
  background-color: var(--color-surface-secondary);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  white-space: pre-wrap;
  word-wrap: break-word;
  max-height: 400px;
  overflow-y: auto;
}

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding: var(--space-6);
  border-top: 1px solid var(--color-border-light);
}

.modal-copy-button {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: white;
  background-color: var(--color-primary);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.modal-copy-button:hover {
  background-color: var(--color-primary-hover);
  transform: translateY(-1px);
}

.modal-copy-button.copied {
  background-color: var(--color-success);
}

.copy-icon,
.check-icon {
  width: 20px;
  height: 20px;
}

.check-icon {
  display: none;
}

.modal-copy-button.copied .copy-icon {
  display: none;
}

.modal-copy-button.copied .check-icon {
  display: block;
}

/* ==========================================
   FOOTER
   ========================================== */

.footer {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border-light);
  padding: var(--space-10) 0;
  margin-top: var(--space-20);
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
  text-align: center;
  margin-bottom: var(--space-6);
}

.footer-text {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
}

.footer-bottom {
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border-light);
  text-align: center;
}

.footer-copyright {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}

/* ==========================================
   LOADING & ERROR STATES
   ========================================== */

.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-16) 0;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
}

.loading.visible {
  opacity: 1;
  visibility: visible;
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--color-border-light);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.error-message {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-16) 0;
  text-align: center;
}

.error-text {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
}

/* ==========================================
   UTILITIES
   ========================================== */

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* ==========================================
   RESPONSIVE
   ========================================== */

@media (max-width: 640px) {
  .header-content {
    height: 56px;
  }
  
  .search-container {
    max-width: 100%;
  }
  
  .categories-grid {
    grid-template-columns: 1fr;
  }
  
  .modal {
    width: 95%;
    max-height: 95vh;
  }
  
  .modal-header,
  .modal-body,
  .modal-footer {
    padding: var(--space-4);
  }
  
  .modal-title {
    font-size: var(--font-size-lg);
  }
}

/* ==========================================
   ACCESSIBILITY
   ========================================== */

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

/* Focus visible для клавиатурной навигации */
*:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* Улучшенная читаемость */
::selection {
  background-color: var(--color-primary);
  color: white;
}