.project-hero {
    padding: var(--space-3xl) 0;
    background: linear-gradient(135deg, rgba(0, 102, 204, 0.05), transparent);
    border-bottom: 1px solid var(--color-border);
}

.hero-breadcrumb {
    display: flex;
    gap: var(--space-md);
    align-items: center;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-2xl);
}

.hero-breadcrumb a {
    color: var(--color-primary);
    text-decoration: none;
    transition: all var(--duration-fast) var(--ease-out);
}

.hero-breadcrumb a:hover {
    text-decoration: underline;
}

.hero-title {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.03em;
    margin-bottom: var(--space-xl);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    max-width: 800px;
    line-height: 1.7;
    margin-bottom: var(--space-2xl);
}

.hero-meta {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-2xl);
    padding: var(--space-2xl) 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    margin-bottom: var(--space-2xl);
}

.meta-item {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.meta-label {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-tertiary);
    font-weight: 600;
}

.meta-value {
    font-size: 1rem;
    color: var(--color-text);
    font-weight: 500;
}

.hero-tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.tech-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: var(--color-bg);
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
    border-radius: 0.375rem;
    font-size: 0.85rem;
    font-weight: 500;
    transition: all var(--duration-fast) var(--ease-out);
}

.tech-badge:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background-color: rgba(0, 102, 204, 0.05);
}

.project-section {
    padding: var(--space-3xl) 0;
}

.project-section h2 {
    font-family: var(--font-display);
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: var(--space-xl);
    letter-spacing: -0.02em;
}

.project-section h3 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
    margin-top: var(--space-2xl);
}

.project-section h3:first-child {
    margin-top: 0;
}

.project-section p {
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: var(--space-lg);
    font-size: 1.05rem;
}

.project-section ul {
    list-style: none;
    padding-left: 0;
    margin-bottom: var(--space-lg);
}

.project-section li {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
    padding-left: var(--space-lg);
    position: relative;
    line-height: 1.7;
}

.project-section li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: 600;
}

.alt-bg {
    background: var(--color-bg);
}

.roles-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-2xl);
    margin-top: var(--space-2xl);
}

.role-card {
    padding: var(--space-2xl);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 0.5rem;
    transition: all var(--duration-base) var(--ease-out);
}

.role-card:hover {
    border-color: var(--color-primary);
    box-shadow: 0 4px 12px rgba(0, 102, 204, 0.1);
    transform: translateY(-2px);
}

.role-card h3 {
    margin-top: 0;
    color: var(--color-text);
}

.role-card p {
    margin-bottom: 0;
    font-size: 0.95rem;
}

.architecture-diagram {
    margin: var(--space-2xl) 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    align-items: center;
}

.arch-layer {
    width: 100%;
    max-width: 400px;
    padding: var(--space-2xl);
    background: var(--color-surface);
    border: 2px solid var(--color-border);
    border-radius: 0.5rem;
    text-align: center;
    transition: all var(--duration-base) var(--ease-out);
}

.arch-layer:hover {
    border-color: var(--color-primary);
    box-shadow: 0 8px 24px rgba(0, 102, 204, 0.15);
}

.arch-layer h3 {
    font-family: var(--font-display);
    margin-top: 0;
    margin-bottom: var(--space-sm);
    color: var(--color-text);
}

.arch-layer p {
    color: var(--color-primary);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
}

.arch-layer ul {
    text-align: left;
    font-size: 0.9rem;
    margin: 0;
    padding-left: var(--space-lg);
}

.arch-layer li {
    margin-bottom: var(--space-sm);
    padding-left: var(--space-lg);
}

.arch-arrow {
    font-size: 1.5rem;
    color: var(--color-primary);
    margin: var(--space-sm) 0;
}

.decision-group {
    padding: var(--space-2xl);
    background: var(--color-surface);
    border-left: 4px solid var(--color-primary);
    border-radius: 0;
    margin-bottom: var(--space-2xl);
    transition: all var(--duration-base) var(--ease-out);
}

.decision-group:hover {
    box-shadow: 0 4px 12px rgba(0, 102, 204, 0.1);
}

.decision-group h3 {
    margin-top: 0;
    color: var(--color-text);
}

.decision-list {
    list-style: none;
    padding-left: 0;
    margin: var(--space-lg) 0 0 0;
}

.decision-list li {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
    padding-left: var(--space-lg);
    position: relative;
    line-height: 1.7;
}

.decision-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: bold;
}

.decision-list strong {
    color: var(--color-text);
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-2xl);
    margin: var(--space-2xl) 0;
}

.result-card {
    padding: var(--space-2xl);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 0.5rem;
    text-align: center;
    transition: all var(--duration-base) var(--ease-out);
}

.result-card:hover {
    border-color: var(--color-primary);
    box-shadow: 0 8px 24px rgba(0, 102, 204, 0.15);
    transform: translateY(-4px);
}

.result-number {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
}

.result-label {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--space-sm);
}

.result-card p {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    margin: 0;
    line-height: 1.6;
}

.lesson-card {
    padding: var(--space-2xl);
    background: var(--color-surface);
    border-radius: 0.5rem;
    margin-bottom: var(--space-2xl);
    transition: all var(--duration-base) var(--ease-out);
    border: 1px solid var(--color-border);
}

.lesson-card:hover {
    border-color: var(--color-primary);
    box-shadow: 0 4px 12px rgba(0, 102, 204, 0.1);
}

.lesson-card h3 {
    margin-top: 0;
    color: var(--color-text);
    margin-bottom: var(--space-md);
}

.lesson-card p {
    margin-bottom: 0;
}

.links-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-2xl);
    margin-top: var(--space-2xl);
}

.link-card {
    padding: var(--space-2xl);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 0.5rem;
    text-decoration: none;
    color: var(--color-text);
    transition: all var(--duration-base) var(--ease-out);
    display: flex;
    flex-direction: column;
    position: relative;
}

.link-card:hover {
    border-color: var(--color-primary);
    box-shadow: 0 8px 24px rgba(0, 102, 204, 0.15);
    transform: translateY(-4px);
}

.link-card h3 {
    margin-top: 0;
    margin-bottom: var(--space-md);
    color: var(--color-text);
}

.link-card p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    margin-bottom: var(--space-lg);
    flex-grow: 1;
}

.link-arrow {
    color: var(--color-primary);
    font-weight: 600;
    transition: all var(--duration-fast) var(--ease-out);
}

.link-card:hover .link-arrow {
    transform: translateX(4px);
}

.project-navigation {
    padding: var(--space-3xl) 0;
    background: var(--color-bg);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.project-navigation h2 {
    margin-bottom: var(--space-2xl);
}

.nav-projects {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-2xl);
}

.nav-project-card {
    padding: var(--space-2xl);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 0.5rem;
    text-decoration: none;
    color: var(--color-text);
    transition: all var(--duration-base) var(--ease-out);
    display: flex;
    flex-direction: column;
    position: relative;
}

.nav-project-card:hover {
    border-color: var(--color-primary);
    box-shadow: 0 8px 24px rgba(0, 102, 204, 0.15);
    transform: translateY(-4px);
}

.nav-label {
    display: inline-block;
    padding: var(--space-xs) var(--space-md);
    background-color: rgba(0, 102, 204, 0.1);
    color: var(--color-primary);
    border-radius: 0.25rem;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-md);
    width: fit-content;
}

.nav-project-card h3 {
    margin-top: 0;
    margin-bottom: var(--space-md);
    font-size: 1.25rem;
    color: var(--color-text);
}

.nav-project-card p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    margin-bottom: var(--space-lg);
    flex-grow: 1;
}

.nav-project-card .arrow {
    color: var(--color-primary);
    font-weight: 600;
    transition: all var(--duration-fast) var(--ease-out);
}

.nav-project-card:hover .arrow {
    transform: translateX(4px);
}

.project-section {
    animation: fadeInUp 0.6s ease-out forwards;
    opacity: 0;
}

.project-section:nth-child(1) {
    animation-delay: 0s;
}

.project-section:nth-child(2) {
    animation-delay: 0.1s;
}

.project-section:nth-child(3) {
    animation-delay: 0.2s;
}

.project-section:nth-child(n+4) {
    animation-delay: 0.3s;
}

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

.section-content {
    max-width: 850px;
    margin: 0 auto;
}

.project-section .section-content {
    margin-left: 0;
    margin-right: 0;
}

@media (max-width: 1024px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .hero-meta {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

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

    .nav-projects {
        grid-template-columns: repeat(2, 1fr);
    }

    .project-section h2 {
        font-size: 1.8rem;
    }
}

@media (max-width: 768px) {
    .project-hero {
        padding: var(--space-2xl) 0;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1.05rem;
    }

    .hero-meta {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }

    .project-section {
        padding: var(--space-2xl) 0;
    }

    .project-section h2 {
        font-size: 1.5rem;
    }

    .project-section h3 {
        font-size: 1.1rem;
    }

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

    .result-number {
        font-size: 2rem;
    }

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

    .nav-projects {
        grid-template-columns: 1fr;
    }

    .arch-layer {
        max-width: 100%;
    }
}

@media (max-width: 480px) {
    .hero-title { font-size: 1.6rem; }
    .hero-subtitle { font-size: 0.95rem; }

    .project-section h2 { font-size: 1.3rem; }
    .project-section h3 { font-size: 1rem; }
    .project-section p { font-size: 0.95rem; }

    .result-card { padding: 1.25rem; }
    .result-number { font-size: 1.75rem; }

    .decision-group { padding: 1.25rem; }
    .lesson-card { padding: 1.25rem; }
    .link-card { padding: 1.25rem; }
    .role-card { padding: 1.25rem; }
    .nav-project-card { padding: 1.25rem; }

    .tech-badge { padding: 0.35rem 0.75rem; font-size: 0.75rem; }
    .hero-tech-stack { gap: 0.5rem; }
}