/* Responsive Styles */

/* Tablet Styles (768px - 1023px) */
@media (max-width: 1023px) {
  :root {
    --space-md: 8px;
    --space-lg: 12px;
    --space-xl: 16px;
  }
  
  .top-menu {
    height: 36px;
    padding: 0 var(--space-md);
  }
  
  .logo h1 {
    font-size: var(--font-size-base);
  }
  
  .menu-items {
    gap: var(--space-sm);
  }
  
  .menu-item {
    padding: var(--space-xs) var(--space-sm);
    font-size: var(--font-size-sm);
  }
  
  .dropdown-content {
    min-width: 160px;
  }
  
  .main-content {
    height: calc(100vh - 64px);
  }
  
  .toolbar {
    width: 48px;
    padding: var(--space-xs) 0;
  }
  
  .tool-group {
    gap: 2px;
  }
  
  .tool-button {
    width: 36px;
    height: 36px;
  }
  
  .panels {
    width: 240px;
    padding: var(--space-sm);
  }
  
  .panel-header {
    padding: var(--space-sm);
  }
  
  .layer-list {
    max-height: 150px;
  }
  
  .layer-item {
    padding: var(--space-xs) var(--space-sm);
  }
  
  .layer-thumbnail {
    width: 28px;
    height: 28px;
  }
  
  .properties-content {
    padding: var(--space-sm);
  }
  
  .control-group {
    margin-bottom: var(--space-sm);
  }
  
  .text-style-group {
    gap: var(--space-sm);
  }
  
  .modal-content {
    min-width: 360px;
    max-width: 95vw;
  }
}

/* Mobile Styles (up to 767px) */
@media (max-width: 767px) {
  .top-menu {
    flex-direction: column;
    height: auto;
    padding: var(--space-sm) var(--space-md);
    gap: var(--space-sm);
  }
  
  .menu-left {
    width: 100%;
    justify-content: space-between;
  }
  
  .menu-items {
    display: none; /* Hide menu items, use mobile menu instead */
  }
  
  .mobile-menu-button {
    display: flex;
    width: 32px;
    height: 32px;
    background-color: var(--neutral-800);
    border: 1px solid var(--neutral-700);
    border-radius: var(--radius-sm);
    color: var(--neutral-400);
    cursor: pointer;
    align-items: center;
    justify-content: center;
  }
  
  .main-content {
    height: calc(100vh - 100px);
    flex-direction: column;
  }
  
  .toolbar {
    width: 100%;
    height: 48px;
    flex-direction: row;
    justify-content: center;
    padding: var(--space-sm) 0;
    border-right: none;
    border-bottom: 1px solid var(--neutral-700);
    overflow-x: auto;
  }
  
  .tool-group {
    flex-direction: row;
    gap: var(--space-sm);
    margin: 0 var(--space-sm);
  }
  
  .tool-button {
    width: 40px;
    height: 40px;
    min-width: 40px;
  }
  
  .canvas-area {
    flex: 1;
    order: -1;
  }
  
  .panels {
    display: none; /* Hide panels on mobile */
  }
  
  .status-bar {
    height: 24px;
    font-size: var(--font-size-xs);
  }
  
  /* Mobile Panel Overlay */
  .mobile-panel-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.8);
    z-index: 3000;
    display: none;
    align-items: flex-end;
  }
  
  .mobile-panel-overlay.show {
    display: flex;
  }
  
  .mobile-panel {
    background-color: var(--neutral-900);
    border-top: 1px solid var(--neutral-700);
    border-radius: var(--radius-md) var(--radius-md) 0 0;
    max-height: 60vh;
    width: 100%;
    overflow-y: auto;
    transform: translateY(100%);
    transition: transform var(--transition-normal);
  }
  
  .mobile-panel.show {
    transform: translateY(0);
  }
  
  .mobile-panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-lg);
    background-color: var(--neutral-800);
    border-bottom: 1px solid var(--neutral-700);
    position: sticky;
    top: 0;
  }
  
  .mobile-panel-header h3 {
    font-size: var(--font-size-lg);
  }
  
  .mobile-panel-close {
    width: 32px;
    height: 32px;
    background-color: var(--neutral-700);
    border: 1px solid var(--neutral-700);
    border-radius: var(--radius-sm);
    color: var(--neutral-400);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  
  .mobile-panel-content {
    padding: var(--space-md);
  }
  
  /* Mobile Bottom Toolbar */
  .mobile-bottom-toolbar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 60px;
    background-color: var(--neutral-900);
    border-top: 1px solid var(--neutral-700);
    display: flex;
    justify-content: space-around;
    align-items: center;
    padding: var(--space-sm);
    z-index: 1000;
  }
  
  .mobile-tool-button {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: var(--space-sm);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background-color var(--transition-fast);
    min-width: 60px;
  }
  
  .mobile-tool-button:hover,
  .mobile-tool-button.active {
    background-color: var(--primary-500);
    color: #FFFFFF;
  }
  
  .mobile-tool-button svg {
    width: 20px;
    height: 20px;
  }
  
  .mobile-tool-label {
    font-size: 10px;
    font-weight: 500;
  }
  
  /* Mobile Menu */
  .mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--neutral-900);
    z-index: 2000;
    transform: translateX(-100%);
    transition: transform var(--transition-normal);
    padding: var(--space-xl);
    overflow-y: auto;
  }
  
  .mobile-menu.show {
    transform: translateX(0);
  }
  
  .mobile-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-xl);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--neutral-700);
  }
  
  .mobile-menu-item {
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--neutral-700);
    cursor: pointer;
    transition: background-color var(--transition-fast);
  }
  
  .mobile-menu-item:hover {
    background-color: var(--neutral-800);
    margin: 0 calc(-1 * var(--space-xl));
    padding-left: var(--space-xl);
    padding-right: var(--space-xl);
  }
  
  .mobile-menu-item:last-child {
    border-bottom: none;
  }
  
  /* Adjust canvas for mobile */
  #mainCanvas {
    max-width: calc(100vw - 32px);
    max-height: calc(100vh - 200px);
  }
  
  /* Mobile tooltips */
  .tool-tooltip {
    display: none; /* Hide tooltips on mobile */
  }
  
  /* Mobile modals */
  .modal-content {
    margin: var(--space-sm);
    max-width: calc(100vw - 16px);
    min-width: auto;
  }
  
  .modal-header {
    padding: var(--space-md);
  }
  
  .color-picker,
  .text-editor {
    padding: var(--space-md);
  }
  
  .color-samples {
    grid-template-columns: repeat(6, 1fr);
    gap: var(--space-xs);
  }
  
  .color-sample {
    width: 40px;
    height: 40px;
  }
  
  .text-input-group textarea {
    min-height: 60px;
  }
  
  .text-style-group {
    gap: var(--space-md);
  }
  
  .text-input-row {
    flex-direction: column;
    gap: var(--space-sm);
  }
  
  .text-input-row input,
  .text-input-row select {
    width: 100%;
  }
  
  .modal-actions {
    flex-direction: column;
    gap: var(--space-sm);
  }
  
  .btn {
    width: 100%;
  }
}

/* Small Mobile Styles (up to 480px) */
@media (max-width: 480px) {
  .top-menu {
    padding: var(--space-sm);
  }
  
  .logo h1 {
    font-size: var(--font-size-sm);
  }
  
  .main-content {
    height: calc(100vh - 80px);
  }
  
  .toolbar {
    height: 44px;
  }
  
  .tool-button {
    width: 36px;
    height: 36px;
  }
  
  .mobile-tool-button {
    min-width: 50px;
    padding: var(--space-xs);
  }
  
  .mobile-tool-button svg {
    width: 18px;
    height: 18px;
  }
  
  .mobile-tool-label {
    font-size: 9px;
  }
  
  .canvas-area {
    padding: var(--space-xs);
  }
  
  #mainCanvas {
    max-width: calc(100vw - 16px);
    max-height: calc(100vh - 180px);
  }
  
  .mobile-panel-overlay {
    align-items: flex-end;
  }
  
  .mobile-panel {
    max-height: 70vh;
    border-radius: var(--radius-md) var(--radius-md) 0 0;
  }
  
  .mobile-panel-header {
    padding: var(--space-md);
  }
  
  .mobile-panel-content {
    padding: var(--space-sm);
  }
  
  .color-sample {
    width: 36px;
    height: 36px;
  }
  
  .color-samples {
    grid-template-columns: repeat(4, 1fr);
  }
  
  .status-bar {
    padding: 0 var(--space-sm);
    font-size: 10px;
  }
}

/* Landscape Mobile Adjustments */
@media (max-width: 767px) and (orientation: landscape) {
  .main-content {
    height: calc(100vh - 60px);
  }
  
  .toolbar {
    height: 40px;
  }
  
  .mobile-bottom-toolbar {
    height: 50px;
  }
  
  #mainCanvas {
    max-height: calc(100vh - 140px);
  }
}

/* High DPI Displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  .tool-button svg,
  .menu-item svg {
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
  }
}

/* Print Styles */
@media print {
  .top-menu,
  .toolbar,
  .panels,
  .status-bar {
    display: none !important;
  }
  
  .main-content {
    height: auto !important;
  }
  
  .canvas-area {
    height: auto !important;
  }
  
  #mainCanvas {
    max-width: none !important;
    max-height: none !important;
    width: 100% !important;
    height: auto !important;
    border: 1px solid #000 !important;
  }
}

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

/* Dark Mode Adjustments (if needed) */
@media (prefers-color-scheme: dark) {
  /* Already dark by default, but can add specific dark mode adjustments */
}

/* Light Mode Support (optional) */
@media (prefers-color-scheme: light) {
  :root {
    --neutral-950: #FAFAFA;
    --neutral-900: #F5F5F5;
    --neutral-800: #E5E5E5;
    --neutral-700: #D4D4D4;
    --neutral-500: #737373;
    --neutral-400: #404040;
    --neutral-200: #262626;
    --neutral-100: #171717;
    --neutral-50: #0A0A0A;
  }
  
  #mainCanvas {
    background-color: #FFFFFF;
  }
}

/* Hover Device Adjustments */
@media (hover: none) and (pointer: coarse) {
  .tool-button:hover,
  .menu-item:hover,
  .dropdown-item:hover {
    background-color: transparent;
  }
  
  .tool-button:active,
  .menu-item:active,
  .dropdown-item:active {
    background-color: var(--neutral-700);
  }
  
  .tool-button.active {
    background-color: var(--primary-500);
  }
}

/* Focus Visible for Accessibility */
@media (prefers-reduced-motion: no-preference) {
  .tool-button:focus-visible,
  .menu-item:focus-visible,
  .dropdown-item:focus-visible {
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.4);
    outline: none;
  }
}

/* Container Queries Support */
@supports (container-type: inline-size) {
  .canvas-container {
    container-type: inline-size;
  }
  
  @container (max-width: 600px) {
    #mainCanvas {
      max-width: 100%;
    }
  }
}

/* Custom Properties for Dynamic Sizing */
@media (max-width: 768px) {
  :root {
    --toolbar-height: 48px;
    --bottom-toolbar-height: 60px;
  }
}

@media (max-width: 480px) {
  :root {
    --toolbar-height: 44px;
    --bottom-toolbar-height: 50px;
  }
}

/* Ensure minimum touch targets */
@media (max-width: 767px) {
  button,
  input[type="button"],
  input[type="submit"],
  .tool-button,
  .menu-item,
  .dropdown-item,
  .layer-item,
  .history-item {
    min-height: 44px;
    min-width: 44px;
  }
  
  .tool-button {
    min-height: 40px;
    min-width: 40px;
  }
  
  .mobile-tool-button {
    min-height: 50px;
    min-width: 50px;
  }
}