/* Lesson 8: CSS Grid - Professional Styling */

/* Import Base Styles */
@import url('../assets/styles.css');

/* ==========================================================================
   Grid Playground Styles
   ========================================================================== */

.grid-playground {
    background: var(--color-surface);
    border-radius: 16px;
    padding: 2rem;
    border: 2px solid var(--color-border);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.grid-controls {
    background: var(--color-card);
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--color-border);
}

.grid-controls h4 {
    margin: 0 0 1rem 0;
    color: var(--color-primary);
    font-size: 1.1rem;
}

.grid-demo-area {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.grid-container {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    grid-template-rows: auto auto auto;
    gap: 15px;
    justify-items: stretch;
    align-items: stretch;
    background: var(--color-background);
    border: 2px dashed var(--color-primary);
    padding: 1.5rem;
    border-radius: 12px;
    min-height: 300px;
    position: relative;
}

.grid-container::before {
    content: 'Grid Container';
    position: absolute;
    top: -12px;
    left: 1rem;
    background: var(--color-primary);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
}

.grid-item {
    background: linear-gradient(135deg, var(--color-secondary), var(--color-accent));
    color: white;
    padding: 1.5rem 1rem;
    border-radius: 8px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.grid-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.grid-item.selected {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    box-shadow: 0 0 0 3px rgba(var(--color-primary-rgb), 0.3);
    transform: scale(1.02);
}

.grid-item.selected::after {
    content: '✓ Selected';
    position: absolute;
    top: -8px;
    right: -8px;
    background: var(--color-success);
    color: white;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.7rem;
}

/* ==========================================================================
   Template Areas Demo
   ========================================================================== */

.template-areas-demo {
    background: var(--color-surface);
    border-radius: 16px;
    overflow: hidden;
    border: 2px solid var(--color-border);
}

.template-selector {
    display: flex;
    background: var(--color-card);
    border-bottom: 2px solid var(--color-border);
    overflow-x: auto;
}

.template-btn {
    padding: 1rem 1.5rem;
    background: none;
    border: none;
    color: var(--color-text-light);
    cursor: pointer;
    font-weight: 600;
    white-space: nowrap;
    transition: all 0.3s ease;
    position: relative;
}

.template-btn:hover {
    background: var(--color-muted);
    color: var(--color-text);
}

.template-btn.active {
    color: var(--color-primary);
    background: var(--color-background);
}

.template-btn.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--color-primary);
}

.template-content {
    padding: 2rem;
}

.template-demo {
    display: none;
    animation: fadeIn 0.3s ease;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.template-demo.active {
    display: grid;
}

.template-visual {
    background: var(--color-background);
    border: 2px solid var(--color-border);
    border-radius: 8px;
    padding: 1.5rem;
    min-height: 300px;
}

.template-code {
    background: var(--color-code-bg);
    border-radius: 8px;
    padding: 1.5rem;
    border: 1px solid var(--color-border);
}

.template-code code {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--color-text);
}

/* Basic Layout Grid */
.basic-grid {
    display: grid;
    grid-template-areas:
        "header header header"
        "nav main sidebar"
        "footer footer footer";
    grid-template-columns: 200px 1fr 250px;
    grid-template-rows: auto 1fr auto;
    gap: 1rem;
    height: 250px;
}

.area-header { grid-area: header; background: var(--color-primary); color: white; }
.area-nav { grid-area: nav; background: var(--color-secondary); color: white; }
.area-main { grid-area: main; background: var(--color-surface); }
.area-sidebar { grid-area: sidebar; background: var(--color-accent); color: white; }
.area-footer { grid-area: footer; background: var(--color-card); }

.area-header, .area-nav, .area-main, .area-sidebar, .area-footer {
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    border-radius: 6px;
    padding: 1rem;
}

/* Holy Grail Grid */
.holy-grail-grid {
    display: grid;
    grid-template-areas:
        "header header header"
        "nav main aside"
        "footer footer footer";
    grid-template-rows: auto 1fr auto;
    grid-template-columns: 150px 1fr 150px;
    height: 250px;
    gap: 1rem;
}

.hg-header { grid-area: header; background: var(--color-primary); color: white; }
.hg-nav { grid-area: nav; background: var(--color-secondary); color: white; }
.hg-main { grid-area: main; background: var(--color-surface); }
.hg-aside { grid-area: aside; background: var(--color-accent); color: white; }
.hg-footer { grid-area: footer; background: var(--color-card); }

.hg-header, .hg-nav, .hg-main, .hg-aside, .hg-footer {
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    border-radius: 6px;
    padding: 1rem;
}

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-areas:
        "header header header"
        "sidebar stats chart"
        "sidebar table notifications";
    grid-template-columns: 200px 1fr 250px;
    grid-template-rows: 60px 150px 1fr;
    gap: 1rem;
    height: 250px;
}

.dash-header { grid-area: header; background: var(--color-primary); color: white; }
.dash-sidebar { grid-area: sidebar; background: var(--color-secondary); color: white; }
.dash-stats { grid-area: stats; background: var(--color-success); color: white; }
.dash-chart { grid-area: chart; background: var(--color-warning); color: white; }
.dash-table { grid-area: table; background: var(--color-surface); }
.dash-notifications { grid-area: notifications; background: var(--color-accent); color: white; }

.dash-header, .dash-sidebar, .dash-stats, .dash-chart, .dash-table, .dash-notifications {
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    border-radius: 6px;
    padding: 0.75rem;
    font-size: 0.9rem;
}

/* Magazine Grid */
.magazine-grid {
    display: grid;
    grid-template-areas:
        "hero hero article1"
        "hero hero article2"
        "article3 article3 ads";
    grid-template-columns: 2fr 1fr 1fr;
    grid-template-rows: 1fr 1fr 100px;
    gap: 1rem;
    height: 250px;
}

.mag-hero { grid-area: hero; background: var(--color-primary); color: white; }
.mag-article1 { grid-area: article1; background: var(--color-secondary); color: white; }
.mag-article2 { grid-area: article2; background: var(--color-accent); color: white; }
.mag-article3 { grid-area: article3; background: var(--color-surface); }
.mag-ads { grid-area: ads; background: var(--color-warning); color: white; }

.mag-hero, .mag-article1, .mag-article2, .mag-article3, .mag-ads {
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    border-radius: 6px;
    padding: 1rem;
}

/* ==========================================================================
   Grid vs Flexbox Comparison
   ========================================================================== */

.comparison-showcase {
    background: var(--color-surface);
    border-radius: 16px;
    overflow: hidden;
    border: 2px solid var(--color-border);
}

.comparison-tabs {
    display: flex;
    background: var(--color-card);
    border-bottom: 2px solid var(--color-border);
    overflow-x: auto;
}

.comparison-tab {
    padding: 1rem 1.5rem;
    background: none;
    border: none;
    color: var(--color-text-light);
    cursor: pointer;
    font-weight: 600;
    white-space: nowrap;
    transition: all 0.3s ease;
    position: relative;
}

.comparison-tab:hover {
    background: var(--color-muted);
    color: var(--color-text);
}

.comparison-tab.active {
    color: var(--color-primary);
    background: var(--color-background);
}

.comparison-tab.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--color-primary);
}

.comparison-content {
    padding: 2rem;
}

.comparison-demo {
    display: none;
    animation: fadeIn 0.3s ease;
}

.comparison-demo.active {
    display: block;
}

.comparison-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.demo-side {
    background: var(--color-card);
    border-radius: 12px;
    padding: 1.5rem;
    border: 1px solid var(--color-border);
}

.demo-side h4 {
    margin: 0 0 1rem 0;
    color: var(--color-primary);
}

.demo-side p {
    margin: 1rem 0 0 0;
    color: var(--color-text-light);
    font-style: italic;
}

/* 2D vs 1D Layouts */
.grid-2d-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(2, 1fr);
    gap: 0.5rem;
    height: 150px;
}

.grid-2d-item {
    background: linear-gradient(135deg, var(--color-secondary), var(--color-accent));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    border-radius: 4px;
    font-size: 0.9rem;
}

.span-2 { grid-column: span 2; }
.span-row { grid-row: span 2; }

.flex-1d-container {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    height: 150px;
}

.flex-1d-item {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    border-radius: 4px;
    flex: 0 0 calc(33.333% - 0.33rem);
    font-size: 0.9rem;
}

.flex-grow { flex-grow: 1; }

/* Layout vs Content First */
.layout-first-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
    height: 150px;
}

.lf-item {
    background: var(--color-primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    font-weight: 600;
    border-radius: 4px;
    padding: 0.5rem;
    font-size: 0.8rem;
}

.content-first-flex {
    display: flex;
    gap: 0.5rem;
    height: 150px;
}

.cf-item {
    background: var(--color-secondary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    font-weight: 600;
    border-radius: 4px;
    padding: 1rem;
    flex: 1;
    font-size: 0.8rem;
}

/* Alignment Demos */
.grid-align-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
    height: 150px;
}

.grid-align-item {
    background: var(--color-accent);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    border-radius: 4px;
    font-size: 0.8rem;
    width: 80%;
    height: 60%;
}

.ga1 { justify-self: start; }
.ga2 { justify-self: center; }
.ga3 { justify-self: end; }

.flex-align-container {
    display: flex;
    gap: 0.5rem;
    height: 150px;
    align-items: flex-start;
}

.flex-align-item {
    background: var(--color-warning);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    font-weight: 600;
    border-radius: 4px;
    flex: 1;
    font-size: 0.8rem;
    padding: 0.5rem;
}

.fa1 { align-self: flex-start; }
.fa2 { align-self: center; }
.fa3 { align-self: flex-end; }

/* Use Cases */
.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.use-case-card {
    background: var(--color-card);
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--color-border);
    transition: transform 0.2s ease;
}

.use-case-card:hover {
    transform: translateY(-2px);
}

.use-case-card h4 {
    margin: 0 0 1rem 0;
    font-size: 1.1rem;
}

.grid-card h4 { color: var(--color-primary); }
.flex-card h4 { color: var(--color-secondary); }
.combine-card h4 { color: var(--color-accent); }

.use-case-card ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.use-case-card li {
    padding: 0.5rem 0;
    color: var(--color-text-light);
    border-bottom: 1px solid var(--color-border);
    position: relative;
    padding-left: 1.5rem;
}

.use-case-card li:last-child {
    border-bottom: none;
}

.use-case-card li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: bold;
}

/* ==========================================================================
   Challenge Styles
   ========================================================================== */

.grid-challenge {
    background: var(--color-surface);
    border-radius: 16px;
    border: 2px solid var(--color-border);
    overflow: hidden;
}

.challenge-selector {
    display: flex;
    background: var(--color-card);
    border-bottom: 2px solid var(--color-border);
    overflow-x: auto;
}

.challenge-btn {
    padding: 1rem 1.5rem;
    background: none;
    border: none;
    color: var(--color-text-light);
    cursor: pointer;
    font-weight: 600;
    white-space: nowrap;
    transition: all 0.3s ease;
    position: relative;
}

.challenge-btn:hover {
    background: var(--color-muted);
    color: var(--color-text);
}

.challenge-btn.active {
    color: var(--color-primary);
    background: var(--color-background);
}

.challenge-btn.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--color-primary);
}

.challenge-content {
    padding: 2rem;
}

.challenge-item {
    display: none;
    animation: fadeIn 0.3s ease;
}

.challenge-item.active {
    display: block;
}

.challenge-description {
    background: var(--color-card);
    padding: 1.5rem;
    border-radius: 8px;
    margin-bottom: 2rem;
    border: 1px solid var(--color-border);
}

.challenge-description h4 {
    margin: 0 0 0.5rem 0;
    color: var(--color-primary);
}

.challenge-description p {
    margin: 0;
    color: var(--color-text-light);
}

.challenge-workspace {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.target-result,
.challenge-editor {
    background: var(--color-card);
    border-radius: 12px;
    padding: 1.5rem;
    border: 1px solid var(--color-border);
}

.target-result h5,
.challenge-editor h5 {
    margin: 0 0 1rem 0;
    color: var(--color-primary);
}

.photo-gallery-target {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: 0.5rem;
}

.photo-gallery-user {
    display: grid;
    gap: 0.5rem;
    /* User CSS will be applied here */
}

.photo-item {
    background: linear-gradient(135deg, var(--color-secondary), var(--color-accent));
    color: white;
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    border-radius: 6px;
    font-size: 0.9rem;
}

.editable-css {
    background: var(--color-code-bg);
    border: 2px solid var(--color-border);
    border-radius: 8px;
    padding: 1rem;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    line-height: 1.6;
    min-height: 120px;
    color: var(--color-text);
    outline: none;
    white-space: pre;
    overflow: auto;
}

.editable-css:focus {
    border-color: var(--color-primary);
}

.test-css-btn {
    background: var(--color-primary);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    margin-top: 1rem;
    transition: all 0.2s ease;
}

.test-css-btn:hover {
    background: var(--color-secondary);
    transform: translateY(-1px);
}

.challenge-result {
    background: var(--color-background);
    border: 2px solid var(--color-border);
    border-radius: 12px;
    padding: 1.5rem;
}

.challenge-result h5 {
    margin: 0 0 1rem 0;
    color: var(--color-primary);
}

.challenge-feedback {
    background: var(--color-card);
    border-radius: 8px;
    padding: 1.5rem;
    border: 1px solid var(--color-border);
    text-align: center;
}

.feedback-content {
    color: var(--color-text-light);
    font-style: italic;
}

.feedback-content.success {
    color: var(--color-success);
    font-weight: 600;
}

.feedback-content code {
    font-family: var(--font-mono);
    background: var(--color-muted);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    color: var(--color-primary);
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */

@media (max-width: 1200px) {
    .grid-playground {
        grid-template-columns: 1fr;
    }
    
    .template-demo {
        grid-template-columns: 1fr;
    }
    
    .comparison-split {
        grid-template-columns: 1fr;
    }
    
    .challenge-workspace {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .controls-grid {
        grid-template-columns: 1fr;
    }
    
    .item-controls-grid {
        grid-template-columns: 1fr;
    }
    
    .template-selector,
    .comparison-tabs,
    .challenge-selector {
        flex-direction: column;
    }
    
    .template-btn,
    .comparison-tab,
    .challenge-btn {
        text-align: left;
    }
    
    .reference-grid {
        grid-template-columns: 1fr;
    }
    
    .use-cases-grid {
        grid-template-columns: 1fr;
    }
    
    /* Adjust grid layouts for mobile */
    .basic-grid {
        grid-template-areas:
            "header"
            "nav"
            "main"
            "sidebar"
            "footer";
        grid-template-columns: 1fr;
        height: auto;
    }
    
    .holy-grail-grid,
    .dashboard-grid,
    .magazine-grid {
        grid-template-columns: 1fr;
        height: auto;
    }
}

/* ==========================================================================
   Animation and Transitions
   ========================================================================== */

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes gridPulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.02);
    }
}

.grid-item.selected {
    animation: gridPulse 2s infinite;
}

/* ==========================================================================
   Print Styles
   ========================================================================== */

@media print {
    .grid-controls,
    .template-selector,
    .comparison-tabs,
    .challenge-selector,
    .test-css-btn {
        display: none;
    }
    
    .template-demo,
    .comparison-demo,
    .challenge-item {
        display: block !important;
        page-break-inside: avoid;
        margin-bottom: 2rem;
    }
    
    .template-visual,
    .demo-side {
        border: 2px solid #000;
        background: white !important;
    }
}

/* ==========================================================================
   Dark Mode Enhancements
   ========================================================================== */

@media (prefers-color-scheme: dark) {
    .grid-item {
        box-shadow: 0 2px 8px rgba(0,0,0,0.3);
    }
    
    .grid-item:hover {
        box-shadow: 0 4px 16px rgba(0,0,0,0.4);
    }
    
    .template-visual,
    .demo-side {
        background: rgba(255,255,255,0.02);
    }
    
    .photo-item {
        box-shadow: 0 2px 8px rgba(0,0,0,0.3);
    }
}

/* ==========================================================================
   Accessibility Enhancements
   ========================================================================== */

.grid-item:focus,
.template-btn:focus,
.comparison-tab:focus,
.challenge-btn:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
    .grid-item,
    .use-case-card,
    .template-demo,
    .comparison-demo,
    .challenge-item {
        animation: none;
        transition: none;
    }
}