@import "tailwindcss";

@theme {
  --color-primary-50: #f0f9ff;
  --color-primary-100: #e0f2fe;
  --color-primary-200: #bae6fd;
  --color-primary-300: #7dd3fc;
  --color-primary-400: #38bdf8;
  --color-primary-500: #0ea5e9;
  --color-primary-600: #0284c7;
  --color-primary-700: #0369a1;
  --color-primary-800: #075985;
  --color-primary-900: #0c4a6e;
}

/* Performance optimizations */
* {
  box-sizing: border-box;
}

img {
  max-width: 100%;
  height: auto;
}

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

/* Grid Overlay - Optimized */
.grid-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 20;
    contain: layout paint;
}

.split-line {
    position: absolute;
    box-shadow: 0 0 3px rgba(0,0,0,0.5);
    z-index: 10;
    will-change: transform, opacity;
}

.split-line.horizontal {
    width: 100%;
    transform: translateY(-50%);
}

.split-line.vertical {
    height: 100%;
    transform: translateX(-50%);
}

/* สีเส้นต่าง ๆ */
.split-line.line-white {
    background-color: rgba(255, 255, 255, 0.7);
}

.split-line.line-red {
    background-color: rgba(255, 0, 0, 0.7);
}

.split-line.line-black {
    background-color: rgba(0, 0, 0, 0.7);
}

/* ความหนาของเส้น */
.split-line.thickness-thin {
    height: 1px;
    width: 1px;
}

.split-line.horizontal.thickness-thin {
    height: 1px;
    width: 100%;
}

.split-line.vertical.thickness-thin {
    width: 1px;
    height: 100%;
}

.split-line.thickness-medium {
    height: 2px;
    width: 2px;
}

.split-line.horizontal.thickness-medium {
    height: 2px;
    width: 100%;
}

.split-line.vertical.thickness-medium {
    width: 2px;
    height: 100%;
}

.split-line.thickness-thick {
    height: 3px;
    width: 3px;
}

.split-line.horizontal.thickness-thick {
    height: 3px;
    width: 100%;
}

.split-line.vertical.thickness-thick {
    width: 3px;
    height: 100%;
}

/* Image Preview Container */
.image-preview-container {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    min-height: 180px;
    background-image: 
        linear-gradient(45deg, #374151 25%, transparent 25%),
        linear-gradient(-45deg, #374151 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #374151 75%),
        linear-gradient(-45deg, transparent 75%, #374151 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
    border-radius: 0.75rem;
    overflow: hidden;
}

.image-wrapper {
    position: relative;
    display: inline-block;
    max-width: 100%;
    line-height: 0;
    contain: layout style paint;
}

/* Results Grid */
.result-grid {
    display: grid;
    gap: 12px;
    margin-top: 16px;
    content-visibility: auto;
    contain-intrinsic-size: 200px;
}

.result-item {
    position: relative;
    overflow: hidden;
    border-radius: 8px;
    background: #1f2937;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    will-change: transform;
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.result-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
}

.result-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.result-item .overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, transparent 50%);
    opacity: 0;
    transition: opacity 0.3s ease;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 1rem;
}

.result-item:hover .overlay {
    opacity: 1;
}

/* Progress Bar */
.progress-fill {
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background: linear-gradient(90deg, var(--color-primary-500), var(--color-primary-300));
    background-size: 200% 100%;
    animation: progressShimmer 2s infinite;
}

@keyframes progressShimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Split Options */
.split-option {
    transition: all 0.2s ease;
    cursor: pointer;
    padding: 12px 8px;
    border: 2px solid #4b5563;
    border-radius: 10px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: #1f2937;
    user-select: none;
}

.split-option:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0,0,0,0.3);
}

.split-option.active {
    border-color: var(--color-primary-500);
    background-color: rgba(14, 165, 233, 0.2);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.25);
}

/* Upload Area */
.upload-area {
    border: 2px dashed #4b5563;
    transition: all 0.2s ease;
    background: #1f2937;
    min-height: 200px;
}

.upload-area:hover, .upload-area.drag-over {
    border-color: var(--color-primary-500);
    background-color: rgba(14, 165, 233, 0.1);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(14, 165, 233, 0.2);
}

/* Control Buttons */
.ctrl-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #374151;
    border: 2px solid #4b5563;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 1rem;
    color: white;
}

.ctrl-btn:hover {
    background: var(--color-primary-500);
    border-color: var(--color-primary-500);
    color: white;
    transform: scale(1.05);
}

.ctrl-btn-sm {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: #374151;
    border: 1px solid #4b5563;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.875rem;
    color: white;
}

.ctrl-btn-sm:hover {
    background: var(--color-primary-500);
    border-color: var(--color-primary-500);
    color: white;
    transform: scale(1.05);
}

/* Grid Result Layout */
.grid-result-container {
    display: flex;
    flex-direction: column;
    gap: 10px;
    width: 100%;
}

.grid-row {
    display: flex;
    gap: 10px;
    width: 100%;
}

.grid-item {
    flex: 1;
    min-width: 0;
}

/* Settings Options */
.setting-option {
    transition: all 0.2s ease;
    cursor: pointer;
    padding: 8px;
    border: 2px solid #4b5563;
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: #1f2937;
    user-select: none;
}

.setting-option:hover {
    transform: translateY(-1px);
    border-color: #6b7280;
}

.setting-option.active {
    border-color: var(--color-primary-500);
    background-color: rgba(14, 165, 233, 0.2);
    box-shadow: 0 0 0 2px rgba(14, 165, 233, 0.25);
}

/* Color Options */
.color-option {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 2px solid #4b5563;
}

.color-option.white {
    background-color: #ffffff;
}

.color-option.red {
    background-color: #ef4444;
}

.color-option.black {
    background-color: #000000;
}

.color-option.active {
    border-color: var(--color-primary-500);
    box-shadow: 0 0 0 2px rgba(14, 165, 233, 0.25);
}

/* Thickness Options */
.thickness-option {
    height: 4px;
    border-radius: 2px;
    background-color: #ffffff;
    margin: 5px 0;
}

.thickness-option.thin {
    height: 1px;
}

.thickness-option.medium {
    height: 2px;
}

.thickness-option.thick {
    height: 3px;
}

.thickness-option.active {
    background-color: var(--color-primary-500);
}

/* Filename Input */
.filename-input {
    background-color: #374151;
    border: 1px solid #4b5563;
    border-radius: 6px;
    padding: 8px 12px;
    color: white;
    width: 100%;
    transition: border-color 0.2s ease;
}

.filename-input:focus {
    outline: none;
    border-color: var(--color-primary-500);
    box-shadow: 0 0 0 2px rgba(14, 165, 233, 0.25);
}

/* Responsive adjustments */
@media (max-width: 640px) {
    .image-preview-container {
        min-height: 150px;
    }
    
    .split-option {
        padding: 8px 4px;
    }
    
    .ctrl-btn {
        width: 36px;
        height: 36px;
    }
    
    .grid-row {
        flex-direction: column;
    }
    
    .grid-item {
        width: 100%;
    }
    
    .setting-option {
        padding: 6px;
    }
}

/* Print styles */
@media print {
    .no-print {
        display: none !important;
    }
    
    body {
        background: white !important;
        color: black !important;
    }
}

/* Focus styles for accessibility */
:focus-visible {
    outline: 2px solid var(--color-primary-500);
    outline-offset: 2px;
}

/* Loading spinner */
@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.fa-spinner {
    animation: spin 1s linear infinite;
}

/* Reduced animation for prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
    .fa-spinner {
        animation: none;
    }
    
    .progress-fill {
        animation: none;
    }
    
    .result-item,
    .split-option,
    .upload-area {
        transition: none;
    }
}