/* Shared Case Study Styles */
:root {
    --bg-primary: #f8f8f8;
    --bg-secondary: #ffffff;
    --text-primary: #1a1a1a;
    --text-secondary: #666;
    --text-tertiary: #999;
    --border-color: #e5e5e5;
    --accent-color: #3b82f6;
}

body.dark-mode {
    --bg-primary: #0a0a0a;
    --bg-secondary: #141414;
    --text-primary: #f5f5f5;
    --text-secondary: #a3a3a3;
    --text-tertiary: #737373;
    --border-color: #262626;
    --accent-color: #3b82f6;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 16px;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Top Navigation */
nav {
    padding: 24px 40px;
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.back-link {
    color: var(--text-secondary);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    transition: color 0.2s ease;
    margin-right: auto;
}

.demo-link {
    color: var(--text-secondary);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    transition: color 0.2s ease;
}

.back-link:hover, .demo-link:hover {
    color: var(--text-primary);
}

/* Theme Toggle */

.private-link {
    color: var(--text-tertiary);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    cursor: default;
    user-select: none;
}

/* Layout Grid */
.case-study-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 40px 80px;
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 60px;
    align-items: start;
}

/* Sidebar Specs */
.sidebar {
    position: sticky;
    top: 40px;
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.card {
    border: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
    border-radius: 12px;
    padding: 24px;
}

.card-title {
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 12px;
}

/* Sidebar - Overview Data */
.overview-grid {
    display: grid;
    grid-template-columns: 100px 1fr;
    row-gap: 16px;
    column-gap: 12px;
    font-size: 14px;
}

.overview-label {
    color: var(--text-secondary);
    font-weight: 500;
}

.overview-value {
    color: var(--text-primary);
    line-height: 1.4;
}

/* Sidebar - Tech Stack Pills */
.tech-pill-container {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tech-pill {
    border: 1px solid var(--border-color);
    padding: 6px 14px;
    border-radius: 100px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
    transition: border-color 0.2s;
}

.tech-pill:hover {
    border-color: var(--text-secondary);
}

/* Sidebar - Feature Checklist */
.feature-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.feature-list li {
    font-size: 14px;
    color: var(--text-primary);
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.feature-list .lc-icon {
    color: #10b981;
    flex-shrink: 0;
    margin-top: 2px;
}

/* Main Content */
.main-content {
    display: flex;
    flex-direction: column;
    gap: 60px;
    padding-bottom: 0px;
}

/* Main Content - Hero */
.hero h1 {
    font-size: clamp(32px, 5vw, 42px);
    font-weight: 800;
    margin-bottom: 16px;
    line-height: 1.2;
    letter-spacing: -0.5px;
}

.hero p {
    font-size: clamp(16px, 2vw, 18px);
    color: var(--text-secondary);
    line-height: 1.7;
    max-width: 800px;
}

/* Main Content - Objectives */
.section-header {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 24px;
    letter-spacing: -0.3px;
}

.objectives-grid {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.objective-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px 30px;
    transition: transform 0.2s;
}

/* Thematic colored accents per card */
.objective-card:nth-child(1) {
    border-left: 4px solid #10b981;
}

.objective-card:nth-child(2) {
    border-left: 4px solid #3b82f6;
}

.objective-card:nth-child(3) {
    border-left: 4px solid #a855f7;
}

.objective-title {
    font-weight: 700;
    font-size: 18px;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.objective-desc {
    color: var(--text-secondary);
    font-size: 15px;
}

/* Feature Walkthrough Showcase */
.showcase-block {
    margin-bottom: 60px;
}

.showcase-block:last-child {
    margin-bottom: 0;
}

.showcase-images {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 30px;
}

.showcase-images.large {
    grid-template-columns: 1fr;
}

.showcase-image-placeholder {
    width: 100%;
    height: auto;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-tertiary);
    font-size: 14px;
    overflow: hidden;
    object-fit: contain;
}

.showcase-image {
    width: 100%;
    height: auto;
    max-height: 600px;
    object-fit: contain;
}

.highlights-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    column-gap: 40px;
    row-gap: 24px;
}

.highlight-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.highlight-icon {
    color: var(--accent-color);
    margin-top: 3px;
}

.highlight-text h4 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--text-primary);
}

.highlight-text p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Architecture Flow Nodes */
.process-flow {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
    background-color: var(--bg-primary);
    padding: 20px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    margin-top: 20px;
}

.process-step {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 8px 16px;
    border-radius: 100px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
}

.process-arrow {
    color: var(--text-tertiary);
    font-size: 18px;
}

.architecture-desc {
    margin-top: 30px;
    color: var(--text-secondary);
    font-size: 15px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* Project Impact Text */
.impact-text {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 12px;
}

.impact-text:last-child {
    margin-bottom: 0;
}

/* Responsive Design */
@media (max-width: 900px) {
    .case-study-container {
        grid-template-columns: 1fr;
        padding: 20px 24px 60px;
    }

    .sidebar {
        position: static;
    }

    .highlights-grid {
        grid-template-columns: 1fr;
    }

    .showcase-images {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 600px) {
    .process-flow {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
    }

    .process-arrow {
        display: none;
    }

    .process-step {
        text-align: center;
    }
}

.architecture-desc code {
    word-break: break-word;
}

/* Case-study screenshots open a lightbox on click; lightbox.js makes them
   focusable, so give them a visible focus ring. */
.showcase-image:focus-visible,
.showcase-image-placeholder:focus-visible,
.back-link:focus-visible,
.demo-link:focus-visible {
    outline: 2px solid var(--text-primary);
    outline-offset: 3px;
    border-radius: 4px;
}

@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}