/* =================================================================
   INSTAGRAM GRID SPLITTER STYLES
   ================================================================= */

#grid-container {
    position: relative;
    animation: fadeIn 0.3s ease-out;
}

.preview-container {
    position: relative;
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin-bottom: 1rem;
    border: 1px solid var(--border-color);
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

#preview-canvas {
    max-width: 100%;
    max-height: 500px;
    height: auto;
    display: block;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.grid-controls {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    border: 1px solid var(--border-color);
}

.grid-controls h5 {
    color: var(--text-color);
    font-weight: 600;
    margin-bottom: 1rem;
}

.grid-btn {
    background: var(--card-bg);
    color: var(--text-color);
    border: 2px solid var(--border-color);
    padding: 12px 20px;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
    font-size: 14px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

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

.grid-btn.active {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    border-color: var(--primary-color);
}

.grid-btn i {
    font-size: 1.1rem;
}

.mode-btn {
    background: var(--card-bg);
    color: var(--text-color);
    border: 2px solid var(--border-color);
    padding: 12px 24px;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
    font-size: 14px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

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

.mode-btn.active {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    border-color: #10b981;
}

.mode-btn i {
    font-size: 1.1rem;
}

.grid-preview {
    display: grid;
    gap: 8px;
    padding: 1rem;
    background: var(--light-bg);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    max-width: 600px;
    margin: 0 auto;
}

.grid-preview.grid-1x3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-preview.grid-2x3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-preview.grid-3x3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-preview.grid-4x3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-tile {
    position: relative;
    width: 100%;
    padding-bottom: 100%;
    background: var(--card-bg);
    border-radius: 6px;
    overflow: hidden;
    border: 2px solid var(--border-color);
    cursor: pointer;
    transition: var(--transition);
}

.grid-tile:hover {
    border-color: var(--primary-color);
    transform: scale(1.05);
    z-index: 10;
}

.grid-tile canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.grid-tile-number {
    position: absolute;
    top: 8px;
    right: 8px;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 700;
    z-index: 5;
}

.tool-group {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

#tile-count {
    color: var(--primary-color);
    font-weight: 700;
}

@media (max-width: 768px) {
    .tool-group {
        flex-direction: column;
        align-items: stretch;
    }
    
    .grid-btn,
    .mode-btn {
        width: 100%;
        justify-content: center;
    }
    
    .grid-preview {
        max-width: 100%;
        gap: 4px;
        padding: 0.5rem;
    }
    
    .grid-tile-number {
        font-size: 0.65rem;
        padding: 2px 6px;
    }
    
    #preview-canvas {
        max-height: 300px;
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}