/* ─────────────────────────────────────────────
   PREVIOUS PROJECTS & CASE STUDIES
   Premium Minimalist Aesthetic
   ───────────────────────────────────────────── */

/* Page Base */
.projects-page {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    padding-top: var(--nav-height);
    font-family: var(--font-sans);
    overflow-x: clip;
}

.projects-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-16) var(--space-6) var(--space-20);
}

/* ─────────────────────────────────────────────
   PROJECTS HERO
   ───────────────────────────────────────────── */
.projects-header {
    margin-bottom: var(--space-24);
    padding-top: var(--space-4);
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

.projects-header.visible {
    opacity: 1;
    transform: translateY(0);
}

.projects-label {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-tertiary);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: var(--space-3);
    display: block;
}

.projects-headline {
    font-size: var(--text-hero);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.03em;
    color: var(--text-primary);
    margin-bottom: var(--space-6);
    max-width: 900px;
}

/* Projects Subheadline */
.projects-subheadline {
    font-size: var(--text-lg);
    line-height: 1.7;
    color: var(--text-secondary);
    max-width: 700px;
    margin-bottom: var(--space-6);
}

/* Impact Pills Row - Compact */
.impact-pills {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
}

.impact-pill {
    display: inline-flex;
    align-items: center;
    padding: var(--space-2) var(--space-4);
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.06), rgba(0, 0, 0, 0.02));
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: 0.01em;
}

/* ─────────────────────────────────────────────
   PROJECT INDEX - TWO COLUMN LAYOUT
   ───────────────────────────────────────────── */
.project-index-layout {
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: var(--space-8);
    align-items: start;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

.project-index-layout.visible {
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 900px) {
    .project-index-layout {
        grid-template-columns: 1fr;
    }

    .project-index-right {
        display: none;
    }
}

/* Left Column - Project List */
.project-index-left {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

/* Search Input */
/* Search Input */
.project-search-wrapper {
    position: sticky;
    top: calc(var(--nav-height) + var(--space-4));
    z-index: 20;
    background: var(--bg-primary);
    padding-bottom: var(--space-4);
    margin-bottom: var(--space-2);
    display: flex;
    align-items: center;
}

.project-search-icon {
    position: absolute;
    left: var(--space-4);
    color: var(--text-tertiary);
    pointer-events: none;
    display: flex;
}

.project-search-input {
    width: 100%;
    padding: var(--space-3) var(--space-4) var(--space-3) calc(var(--space-4) + 24px);
    font-size: var(--text-sm);
    font-family: var(--font-sans);
    color: var(--text-primary);
    background: var(--bg-secondary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.project-search-input::placeholder {
    color: var(--text-tertiary);
}

.project-search-input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

/* Scrollable Project List */
.project-index-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    max-height: calc(100vh - 300px);
    overflow-y: auto;
    padding-right: var(--space-2);
}

.project-index-list::-webkit-scrollbar {
    width: 4px;
}

.project-index-list::-webkit-scrollbar-track {
    background: transparent;
}

.project-index-list::-webkit-scrollbar-thumb {
    background: var(--border-subtle);
    border-radius: 2px;
}

/* Index Item Cards */
.project-index-item {
    background: var(--bg-secondary);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    padding: var(--space-5);
    cursor: pointer;
    transition: all 0.3s var(--ease-out);
    box-shadow: 0 2px 8px -4px rgba(0, 0, 0, 0.04);
}

.project-index-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 32px -8px rgba(0, 0, 0, 0.12);
    border-color: var(--accent-primary);
    background: var(--bg-primary);
}

.project-index-item.selected {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.15), 0 8px 24px -8px rgba(0, 0, 0, 0.1);
    background: var(--bg-primary);
}

.project-index-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-2);
}

.project-index-title {
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    position: relative;
}

.project-index-title::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1.5px;
    background: var(--accent-primary);
    transition: width 0.3s var(--ease-out);
}

.project-index-item:hover .project-index-title::after {
    width: 100%;
}

.project-index-arrow {
    color: var(--text-tertiary);
    transition: transform 0.3s var(--ease-out), color 0.3s ease;
    display: flex;
}

.project-index-item:hover .project-index-arrow {
    transform: translateX(4px);
    color: var(--accent-primary);
}

.project-index-impact {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    line-height: 1.5;
    margin: 0 0 var(--space-3);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.project-index-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-1);
}

.project-index-chip {
    font-size: 10px;
    font-weight: 600;
    padding: 3px 10px;
    background: rgba(0, 0, 0, 0.06);
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.project-index-chip.more {
    background: var(--bg-secondary);
    border-color: var(--border-default);
    color: var(--text-tertiary);
}

/* Right Column - Preview Panel */
.project-index-right {
    position: sticky;
    top: calc(var(--nav-height) + var(--space-8));
}

.preview-panel {
    background: var(--bg-secondary);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    box-shadow: 0 8px 40px -12px rgba(0, 0, 0, 0.12);
    transition: opacity 0.15s ease;
    min-height: 500px;
}

.preview-panel.fade-out {
    opacity: 0.3;
}

.preview-panel.fade-in {
    opacity: 1;
}

.preview-title {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 var(--space-3);
    letter-spacing: -0.02em;
}

.preview-summary {
    font-size: var(--text-base);
    color: var(--text-secondary);
    line-height: 1.7;
    margin: 0 0 var(--space-6);
}

.preview-metrics {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-bottom: var(--space-6);
}

.preview-metric-pill {
    display: inline-flex;
    padding: var(--space-2) var(--space-4);
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.06), rgba(0, 0, 0, 0.02));
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: var(--radius-md);
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--text-primary);
}

.preview-image-container {
    margin-bottom: var(--space-6);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-subtle);
    background: var(--bg-secondary);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 200px;
}

.preview-image {
    width: 100%;
    height: auto;
    max-height: 500px;
    object-fit: contain;
    background: #f8f9fb;
    display: block;
}

.preview-image-placeholder {
    aspect-ratio: 16/10;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    background: var(--bg-secondary);
}

.preview-image-caption {
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    background: var(--bg-primary);
    border-top: 1px solid var(--border-subtle);
    margin: 0;
}

.preview-actions {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

/* Gallery link removed - styles deprecated */

/* Legacy highlight-pill support */
.projects-hook {
    font-size: var(--text-lg);
    line-height: 1.6;
    color: var(--text-secondary);
    max-width: 800px;
    margin-bottom: var(--space-10);
}

.projects-highlights {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-4);
    margin-top: var(--space-8);
}

.highlight-pill {
    display: inline-flex;
    align-items: center;
    padding: var(--space-2) var(--space-4);
    background: var(--bg-secondary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-secondary);
    transition: border-color 0.3s ease, color 0.3s ease;
}

.highlight-pill:hover {
    border-color: var(--accent-primary);
    color: var(--text-primary);
}

/* ─────────────────────────────────────────────
   PROJECTS GRID
   ───────────────────────────────────────────── */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
    gap: var(--space-8);
    width: 100%;
}

.project-card {
    position: relative;
    background: var(--bg-secondary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: var(--space-8);
    cursor: pointer;
    transition: all 0.4s var(--ease-out);
    display: flex;
    flex-direction: column;
    height: 100%;
    opacity: 0;
    transform: translateY(20px);
}

.projects-reveal-stagger.visible .project-card {
    opacity: 1;
    transform: translateY(0);
}

/* Card Hover Effects - Premium Lift */
.project-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px -10px rgba(0, 0, 0, 0.08);
    border-color: var(--border-default);
}

.project-card-title {
    font-size: var(--text-2xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-4);
    position: relative;
    display: inline-block;
}

/* Accent Underline on Hover */
.project-card-title::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-primary);
    transition: width 0.3s var(--ease-out);
}

.project-card:hover .project-card-title::after {
    width: 40px;
}

.project-card-impact {
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--text-secondary);
    margin-bottom: var(--space-6);
    flex-grow: 1;
}

.project-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-bottom: var(--space-8);
}

.project-tag {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
    background: var(--bg-secondary);
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    letter-spacing: 0.02em;
}

/* CTA with Arrow Nudge */
.project-card-cta {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-primary);
    margin-top: auto;
    transition: color 0.2s ease;
}

.project-card:hover .project-card-cta {
    color: var(--accent-primary);
}

.project-card-cta svg {
    transition: transform 0.3s var(--ease-out);
}

.project-card:hover .project-card-cta svg {
    transform: translateX(4px);
}


/* --- CASE STUDY PAGE LAYOUT --- */
.case-study-layout {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: var(--space-10);
    max-width: 1100px;
    margin: 0 auto;
    padding: calc(72px + var(--space-10)) var(--space-6) var(--space-16);
}

@media (max-width: 900px) {
    .case-study-layout {
        grid-template-columns: 1fr;
        padding-top: calc(72px + var(--space-6));
    }
}

/* --- STICKY SIDEBAR NAV --- */
.case-sidebar {
    position: sticky;
    top: calc(var(--nav-height) + var(--space-8));
    height: fit-content;
    max-height: calc(100vh - var(--nav-height) - var(--space-16));
    overflow-y: auto;
    align-self: start;
    padding-right: var(--space-4);
}

@media (max-width: 900px) {
    .case-sidebar {
        display: none;
    }
}

.case-nav-list {
    list-style: none;
    padding: 0;
    margin: 0;
    border-left: 2px solid var(--color-border);
}

.case-nav-item {
    margin-left: -2px;
    border-left: 2px solid transparent;
    transition: all 0.2s var(--ease-out);
}

.case-nav-link {
    display: block;
    padding: var(--space-2) var(--space-4);
    font-size: 13px;
    color: var(--color-text-tertiary);
    text-decoration: none;
    transition: all 0.2s var(--ease-out);
    background: none;
    border: none;
    cursor: pointer;
    font-family: inherit;
    text-align: left;
    width: 100%;
}

.case-nav-link:hover {
    color: var(--color-text-secondary);
}

.case-nav-item.active {
    border-left-color: var(--color-text-primary);
}

.case-nav-item.active .case-nav-link {
    color: var(--color-text-primary);
    font-weight: 500;
}

/* --- CASE STUDY MAIN CONTENT --- */
.case-main {
    max-width: 800px;
}

/* --- CASE HERO --- */
.case-hero {
    margin-bottom: var(--space-12);
    padding-bottom: var(--space-8);
    border-bottom: 1px solid var(--color-border);
}

.case-hero-title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 700;
    color: var(--color-text-primary);
    letter-spacing: -0.03em;
    line-height: 1.15;
    margin-bottom: var(--space-4);
}

.case-hero-subtitle {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    line-height: 1.75;
    margin-bottom: var(--space-8);
    max-width: 680px;
}

/* --- IMPACT STRIP --- */
.case-impact-strip {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-4);
}

@media (max-width: 640px) {
    .case-impact-strip {
        grid-template-columns: 1fr;
    }
}

.case-impact-tile {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-5);
}

.case-impact-value {
    display: block;
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--space-1);
}

.case-impact-label {
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
    line-height: 1.4;
}

/* --- CASE CONTENT SECTIONS --- */
.case-content-section {
    margin-bottom: var(--space-12);
    scroll-margin-top: 120px;
}

.case-section-label {
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-3);
}

.case-section-heading {
    font-size: var(--text-2xl);
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--space-5);
    letter-spacing: -0.02em;
}

.case-section-text {
    font-size: var(--text-base);
    color: var(--color-text-secondary);
    line-height: 1.8;
    max-width: 680px;
}

.case-section-list {
    list-style: none;
    padding: 0;
    margin: var(--space-5) 0 0 0;
}

.case-section-list li {
    position: relative;
    padding-left: var(--space-6);
    margin-bottom: var(--space-3);
    font-size: var(--text-base);
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.case-section-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--color-text-tertiary);
}

/* --- INTEGRATION DIAGRAM --- */
.integration-diagram {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    margin-top: var(--space-6);
}

.integration-step {
    display: flex;
    align-items: flex-start;
    gap: var(--space-4);
    padding: var(--space-3) 0;
    border-bottom: 1px solid var(--color-border);
}

.integration-step:last-child {
    border-bottom: none;
}

.integration-number {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 28px;
    height: 28px;
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-text-primary);
    background: #ffffff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
}

.integration-text {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: 1.6;
    padding-top: 4px;
}

.integration-arrow {
    color: var(--color-text-tertiary);
    margin: 0 var(--space-1);
}

/* --- GALLERY SECTION --- */
.case-gallery {
    margin-top: var(--space-6);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
}

@media (max-width: 640px) {
    .gallery-grid {
        grid-template-columns: 1fr;
    }
}

.gallery-item {
    position: relative;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    cursor: pointer;
    transition: all 0.25s var(--ease-out);
}

.gallery-item:hover {
    border-color: var(--color-border-hover);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

.gallery-image {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: contain;
    /* Changed from cover to contain for diagrams */
    background-color: #F8F9FB;
    /* Subtle background for transparent images */
    transition: transform 0.3s var(--ease-out);
    padding: 1rem;
    /* Add some breathing room */
}

.gallery-item:hover .gallery-image {
    transform: scale(1.03);
}

.gallery-caption {
    padding: var(--space-3) var(--space-4);
    background: #ffffff;
    border-top: 1px solid var(--color-border);
}

.gallery-caption-text {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-1);
}

.gallery-caption-page {
    font-size: 11px;
    color: var(--color-text-tertiary);
}

/* --- LIGHTBOX --- */
.lightbox-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(8px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s var(--ease-out);
}

.lightbox-overlay.open {
    opacity: 1;
    visibility: visible;
}

.lightbox-content {
    max-width: 90vw;
    max-height: 90vh;
    position: relative;
}

.lightbox-image {
    max-width: 100%;
    max-height: 85vh;
    border-radius: var(--radius-md);
}

.lightbox-close {
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: var(--radius-full);
    color: #ffffff;
    cursor: pointer;
    transition: background 0.2s ease;
    position: fixed;
}

.lightbox-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

.lightbox-nav {
    position: fixed;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: var(--radius-full);
    color: #ffffff;
    cursor: pointer;
    transition: background 0.2s ease;
}

.lightbox-nav:hover {
    background: rgba(255, 255, 255, 0.2);
}

.lightbox-prev {
    left: var(--space-6);
}

.lightbox-next {
    right: var(--space-6);
}

.lightbox-caption {
    text-align: center;
    margin-top: var(--space-4);
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--text-sm);
}

/* --- PDF VIEWER MODAL --- */
.pdf-viewer-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.95);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s var(--ease-out);
}

.pdf-viewer-overlay.open {
    opacity: 1;
    visibility: visible;
}

.pdf-viewer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) var(--space-6);
    background: rgba(255, 255, 255, 0.05);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.pdf-viewer-title {
    font-size: var(--text-base);
    font-weight: 500;
    color: #ffffff;
}

.pdf-viewer-close {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: var(--radius-sm);
    color: #ffffff;
    cursor: pointer;
    transition: background 0.2s ease;
}

.pdf-viewer-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

.pdf-viewer-body {
    flex: 1;
    display: flex;
    overflow: hidden;
}

.pdf-thumbnails {
    width: 120px;
    background: rgba(255, 255, 255, 0.03);
    border-right: 1px solid rgba(255, 255, 255, 0.1);
    overflow-y: auto;
    padding: var(--space-3);
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

@media (max-width: 768px) {
    .pdf-thumbnails {
        display: none;
    }
}

.pdf-thumb {
    width: 100%;
    aspect-ratio: 3/4;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    color: rgba(255, 255, 255, 0.6);
}

.pdf-thumb:hover {
    border-color: rgba(255, 255, 255, 0.3);
}

.pdf-thumb.active {
    border-color: #ffffff;
    color: #ffffff;
}

.pdf-main {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-6);
}

.pdf-embed {
    width: 100%;
    height: 100%;
    border: none;
    border-radius: var(--radius-md);
    background: #ffffff;
}

/* --- SCROLL REVEAL --- */
.projects-reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}

.projects-reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.projects-reveal-stagger>* {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.5s var(--ease-out), transform 0.5s var(--ease-out);
}

.projects-reveal-stagger.visible>*:nth-child(1) {
    transition-delay: 0s;
    opacity: 1;
    transform: translateY(0);
}

.projects-reveal-stagger.visible>*:nth-child(2) {
    transition-delay: 0.08s;
    opacity: 1;
    transform: translateY(0);
}

.projects-reveal-stagger.visible>*:nth-child(3) {
    transition-delay: 0.16s;
    opacity: 1;
    transform: translateY(0);
}

.projects-reveal-stagger.visible>*:nth-child(4) {
    transition-delay: 0.24s;
    opacity: 1;
    transform: translateY(0);
}

.projects-reveal-stagger.visible>*:nth-child(5) {
    transition-delay: 0.32s;
    opacity: 1;
    transform: translateY(0);
}

.projects-reveal-stagger.visible>*:nth-child(6) {
    transition-delay: 0.4s;
    opacity: 1;
    transform: translateY(0);
}

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

    .projects-reveal,
    .projects-reveal-stagger>* {
        opacity: 1;
        transform: none;
        transition: none;
    }
}

/* --- OPEN SPEC BUTTON --- */
.open-spec-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-5);
    font-size: 14px;
    font-weight: 600;
    color: #ffffff;
    background: var(--color-text-primary);
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s var(--ease-out);
    font-family: inherit;
    margin-top: var(--space-6);
}

.open-spec-btn:hover {
    background: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.open-spec-btn svg {
    width: 16px;
    height: 16px;
}

/* --- PROJECT NAVIGATION BAR --- */
.project-nav-bar {
    position: sticky;
    top: 72px;
    /* Below main nav */
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    z-index: 90;
    font-family: var(--font-sans);
}

.project-nav-container {
    max-width: 1100px;
    margin: 0 auto;
    height: 64px;
    padding: 0 var(--space-6);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.project-nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    text-decoration: none;
    color: var(--color-text-secondary);
    transition: all 0.2s ease;
    max-width: 300px;
}

.project-nav-link:hover {
    color: var(--color-text-primary);
}

.project-nav-prev {
    text-align: left;
}

.project-nav-next {
    text-align: right;
}

.project-nav-spacer {
    width: 140px;
    /* Approximate width of a nav link to keep center aligned */
    display: none;
    /* Hide on mobile */
}

@media (min-width: 768px) {
    .project-nav-spacer {
        display: block;
    }
}

.project-nav-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    color: var(--color-text-tertiary);
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.project-nav-link:hover .project-nav-icon {
    border-color: var(--color-text-secondary);
    color: var(--color-text-secondary);
    background: #ffffff;
}

.project-nav-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
    overflow: hidden;
}

.project-nav-label {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-tertiary);
    font-weight: 600;
}

.project-nav-title {
    font-size: 13px;
    font-weight: 500;
    color: inherit;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.project-nav-center {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    color: var(--color-text-primary);
    transition: transform 0.2s ease;
}

.project-nav-center:hover {
    transform: translateY(-1px);
}

.project-nav-center-text {
    font-size: 14px;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.project-nav-center-count {
    font-size: 11px;
    color: var(--color-text-tertiary);
}

@media (max-width: 768px) {

    .project-nav-title,
    .project-nav-label,
    .project-nav-center {
        display: none;
    }

    .project-nav-container {
        justify-content: space-between;
    }

    .project-nav-link {
        width: auto;
    }

    .project-nav-center {
        display: flex;
        /* Keep center text visible or maybe just 'Projects' */
    }

    /* On mobile, maybe simplified center */
    .project-nav-center-count {
        display: none;
    }
}

/* ─────────────────────────────────────────────
   ROLE HIERARCHY
   ───────────────────────────────────────────── */
.role-hierarchy-container {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    margin-top: var(--space-8);
    margin-bottom: var(--space-6);
    position: relative;
    padding-left: var(--space-4);
    /* Space for vertical line if desired, or simpler centered flow */
}

/* Optional vertical line connection */
.role-hierarchy-container::before {
    content: '';
    position: absolute;
    top: 20px;
    bottom: 20px;
    left: 28px;
    /* Adjust based on badge center */
    width: 2px;
    background: var(--color-border);
    z-index: 0;
}

.role-card {
    position: relative;
    background: #ffffff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-4) var(--space-5);
    transition: all 0.3s var(--ease-out);
    z-index: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    cursor: default;
}

.role-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 16px -4px rgba(0, 0, 0, 0.08);
    border-color: var(--color-border-hover);
}

.role-card::after {
    content: '';
    position: absolute;
    left: -1px;
    top: 50%;
    transform: translateY(-50%) scaleY(0);
    width: 3px;
    height: 60%;
    background: var(--color-text-primary);
    /* Tiny accent highlight */
    border-radius: 0 4px 4px 0;
    transition: transform 0.3s var(--ease-out);
}

.role-card:hover::after {
    transform: translateY(-50%) scaleY(1);
}

.role-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.role-id-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 700;
    color: var(--color-text-secondary);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    padding: 2px 8px;
    border-radius: var(--radius-full);
    min-width: 32px;
}

.role-title {
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--color-text-primary);
}

.role-label {
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
    font-weight: 400;
}

.role-desc {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: 1.5;
    margin-top: var(--space-1);
    padding-left: calc(32px + var(--space-2));
    /* Indent text to align with title next to badge */
}

.role-rationale {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-text-primary);
    margin-top: var(--space-2);
    padding-left: var(--space-4);
    border-left: 2px solid var(--accent-primary);
    line-height: 1.5;
}

/* ─────────────────────────────────────────────
   SOLUTION BULLETS ("How this helped")
   ───────────────────────────────────────────── */
.solution-bullets-container {
    margin-top: var(--space-10);
    padding-top: var(--space-8);
    border-top: 1px solid var(--color-border);
}

.solution-bullets-title {
    font-size: var(--text-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-4);
}

.solution-bullets-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
}

.solution-bullet-item {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: 1.5;
    position: relative;
    padding-left: var(--space-4);
}

.solution-bullet-item::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--color-text-primary);
    font-weight: bold;
}

@media (max-width: 768px) {
    .solution-bullets-grid {
        grid-template-columns: 1fr;
        gap: var(--space-3);
    }
}

/* ─────────────────────────────────────────────
   VISUAL PROOF GRID
   ───────────────────────────────────────────── */
.visual-proof-section {
    margin-top: var(--space-12);
}

.visual-proof-title {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-4);
    display: block;
}

.visual-proof-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
}

@media (max-width: 640px) {
    .visual-proof-grid {
        grid-template-columns: 1fr;
    }
}

.visual-proof-item {
    cursor: pointer;

}

.visual-proof-image-container {
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    overflow: hidden;
    aspect-ratio: 16 / 10;
    margin-bottom: var(--space-3);
    transition: all 0.3s var(--ease-out);
}

.visual-proof-item:hover .visual-proof-image-container {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px -4px rgba(0, 0, 0, 0.1);
    border-color: var(--color-border-hover);
}

.visual-proof-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s var(--ease-out);
}

.visual-proof-item:hover .visual-proof-image {
    transform: scale(1.02);
}

.visual-proof-caption {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: color 0.2s ease;
}

.visual-proof-item:hover .visual-proof-caption {
    color: var(--color-text-primary);
}


/* ─────────────────────────────────────────────
   MOBILE STICKY NAV
   ───────────────────────────────────────────── */
.case-mobile-nav {
    display: none;
    /* Desktop default */
    position: sticky;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    z-index: 95;
    /* Above content but below modals */
    padding: var(--space-3) var(--space-6);
}

@media (max-width: 900px) {
    .case-mobile-nav {
        display: flex;
        flex-direction: column;
    }
}

.case-mobile-nav-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}

.case-mobile-title {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-text-primary);
}

.case-mobile-toggle {
    background: none;
    border: none;
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    display: flex;
    align-items: center;
    gap: var(--space-2);
    cursor: pointer;
}

.case-mobile-menu {
    display: none;
    padding-top: var(--space-4);
    border-top: 1px solid var(--color-border);
    margin-top: var(--space-3);
}

.case-mobile-menu.open {
    display: block;
    animation: slideDown 0.2s ease-out;
}

.case-mobile-link {
    display: block;
    padding: var(--space-3) 0;
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    text-decoration: none;
    border-bottom: 1px solid var(--color-border-subtle);
}

.case-mobile-link:last-child {
    border-bottom: none;
}

.case-mobile-link.active {
    color: var(--color-text-primary);
    font-weight: 600;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}