/**
 * Grid Layout Styles
 * Local First Tools v2
 */

/* ========================================
   TOOLS GRID
   ======================================== */

.tools-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(var(--card-min-width), 1fr));
    gap: var(--grid-gap);
    align-items: start;
}

/* Virtual scrolling container */
.tools-container.virtual-scroll {
    position: relative;
    will-change: transform;
}

.tools-container.virtual-scroll .tool-card {
    position: absolute;
    left: 0;
    right: 0;
}

/* ========================================
   GRID VARIANTS
   ======================================== */

/* Dense grid */
.tools-container.dense {
    --card-min-width: 250px;
    --grid-gap: var(--space-3);
}

/* Spacious grid */
.tools-container.spacious {
    --card-min-width: 350px;
    --grid-gap: var(--space-6);
}

/* Fixed columns */
.tools-container.cols-2 {
    grid-template-columns: repeat(2, 1fr);
}

.tools-container.cols-3 {
    grid-template-columns: repeat(3, 1fr);
}

.tools-container.cols-4 {
    grid-template-columns: repeat(4, 1fr);
}

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

@media (max-width: 640px) {
    .tools-container {
        grid-template-columns: 1fr;
        --grid-gap: var(--space-4);
    }

    .tools-container.cols-2,
    .tools-container.cols-3,
    .tools-container.cols-4 {
        grid-template-columns: 1fr;
    }
}

@media (min-width: 641px) and (max-width: 1024px) {
    .tools-container.cols-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ========================================
   SECTION GROUPS
   ======================================== */

.tools-section {
    margin-bottom: var(--space-6);
}

.tools-section:last-child {
    margin-bottom: 0;
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-4);
    padding-bottom: var(--space-3);
    border-bottom: 1px solid var(--border-primary);
}

.section-title {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
}

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

.section-count {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    padding: var(--space-1) var(--space-3);
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
}

.section-actions {
    display: flex;
    gap: var(--space-2);
}

/* ========================================
   PINNED SECTION
   ======================================== */

.pinned-section {
    position: relative;
    padding: var(--space-4);
    margin-bottom: var(--space-5);
    background: linear-gradient(135deg, rgba(6, 255, 165, 0.05), transparent);
    border: 1px solid rgba(6, 255, 165, 0.2);
    border-radius: var(--radius-xl);
}

.pinned-section .section-title::before {
    content: '📌';
    margin-right: var(--space-1);
}

/* ========================================
   FEATURED SECTION
   ======================================== */

.featured-section {
    position: relative;
    padding: var(--space-4);
    margin-bottom: var(--space-5);
    background: linear-gradient(135deg, rgba(131, 56, 236, 0.05), transparent);
    border: 1px solid rgba(131, 56, 236, 0.2);
    border-radius: var(--radius-xl);
}

.featured-section .section-title {
    color: var(--color-accent-tertiary);
}

/* ========================================
   CATEGORY SECTIONS
   ======================================== */

.category-section {
    margin-bottom: var(--space-6);
}

.category-section .section-header {
    --cat-color: var(--text-secondary);
}

.category-section .section-title {
    color: var(--cat-color);
}

.category-section[data-category="visual_art"] { --cat-color: var(--cat-visual-art); }
.category-section[data-category="3d_immersive"] { --cat-color: var(--cat-3d-immersive); }
.category-section[data-category="audio_music"] { --cat-color: var(--cat-audio-music); }
.category-section[data-category="games_puzzles"] { --cat-color: var(--cat-games-puzzles); }
.category-section[data-category="experimental_ai"] { --cat-color: var(--cat-experimental-ai); }
.category-section[data-category="creative_tools"] { --cat-color: var(--cat-creative-tools); }
.category-section[data-category="generative_art"] { --cat-color: var(--cat-generative-art); }
.category-section[data-category="particle_physics"] { --cat-color: var(--cat-particle-physics); }
.category-section[data-category="educational_tools"] { --cat-color: var(--cat-educational); }

/* ========================================
   GRID ANIMATIONS
   ======================================== */

.tools-container.animate-in .tool-card {
    opacity: 0;
    transform: translateY(20px);
    animation: grid-item-in var(--duration-300) var(--ease-out) forwards;
}

.tools-container.animate-in .tool-card:nth-child(1) { animation-delay: 0ms; }
.tools-container.animate-in .tool-card:nth-child(2) { animation-delay: 50ms; }
.tools-container.animate-in .tool-card:nth-child(3) { animation-delay: 100ms; }
.tools-container.animate-in .tool-card:nth-child(4) { animation-delay: 150ms; }
.tools-container.animate-in .tool-card:nth-child(5) { animation-delay: 200ms; }
.tools-container.animate-in .tool-card:nth-child(6) { animation-delay: 250ms; }
.tools-container.animate-in .tool-card:nth-child(n+7) { animation-delay: 300ms; }

@keyframes grid-item-in {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================================
   REDUCED MOTION
   ======================================== */

@media (prefers-reduced-motion: reduce) {
    .tools-container.animate-in .tool-card {
        animation: none;
        opacity: 1;
        transform: none;
    }
}