/* ============================================
   PROJECT DETAIL PAGE STYLES
   ============================================ */

.project-detail-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 3rem 1.5rem 4rem;
}

/* Breadcrumb */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 2.5rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.breadcrumb a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.2s;
}

.breadcrumb a:hover {
    color: var(--text-main);
}

.breadcrumb-sep {
    color: var(--border);
    user-select: none;
}

.breadcrumb-current {
    color: var(--text-main);
    font-weight: 500;
}

/* Hero */
.project-hero {
    margin-bottom: 3rem;
}

.project-hero-tags {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.25rem;
    flex-wrap: wrap;
}

.project-year {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-family: 'Space Grotesk', sans-serif;
}

.project-tag-badge {
    font-size: 0.75rem;
    padding: 3px 10px;
    border-radius: 20px;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.2);
    color: #60a5fa;
    font-weight: 500;
}

.project-hero h1 {
    font-size: 2.75rem;
    line-height: 1.15;
    margin-bottom: 1rem;
    letter-spacing: -0.04em;
    background: linear-gradient(135deg, #ffffff 0%, #a1a1aa 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.project-hero-subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 600px;
    line-height: 1.6;
    margin-bottom: 2rem;
}

.project-cta {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: 10px;
    font-size: 0.9rem;
    font-weight: 500;
    text-decoration: none;
    border: 1px solid transparent;
    transition: all 0.2s ease;
}

.cta-btn-primary {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}

.cta-btn-primary:hover {
    background: #2563eb;
    border-color: #2563eb;
    transform: translateY(-1px);
}

.cta-btn-secondary {
    background: transparent;
    color: var(--text-muted);
    border-color: var(--border);
}

.cta-btn-secondary:hover {
    color: var(--text-main);
    border-color: var(--text-muted);
    background: rgba(255,255,255,0.04);
    transform: translateY(-1px);
}

.cta-btn i {
    width: 16px;
    height: 16px;
}

/* Preview Image */
.project-preview {
    width: 100%;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--border);
    margin-bottom: 3rem;
    background: var(--card-bg);
}

.project-preview img {
    width: 100%;
    height: auto;
    display: block;
}

/* Content Grid */
.project-content-grid {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: 2rem;
    align-items: start;
}

/* Main Content */
.project-main-content {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

.content-section h2 {
    font-size: 1.2rem;
    color: var(--text-main);
    margin-bottom: 1rem;
    font-family: 'Space Grotesk', sans-serif;
    position: relative;
    padding-bottom: 0.6rem;
}

.content-section h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--accent);
    border-radius: 2px;
}

.content-section p {
    color: var(--text-muted);
    line-height: 1.7;
    font-size: 0.95rem;
}

.content-section p + p {
    margin-top: 0.75rem;
}

.feature-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    margin-top: 0.5rem;
}

.feature-list li {
    color: var(--text-muted);
    font-size: 0.9rem;
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
    line-height: 1.5;
}

.feature-list li::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
    flex-shrink: 0;
    margin-top: 7px;
}

/* Sidebar */
.project-sidebar {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    position: sticky;
    top: 2rem;
}

.sidebar-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 1.25rem;
}

.sidebar-card h3 {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    margin-bottom: 1rem;
    font-family: 'Inter', sans-serif;
}

.sidebar-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.sidebar-tags span {
    font-size: 0.75rem;
    background: #262626;
    padding: 4px 10px;
    border-radius: 6px;
    color: #d4d4d8;
    border: 1px solid var(--border);
}

.sidebar-info-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.sidebar-info-item {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.sidebar-info-label {
    font-size: 0.72rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.sidebar-info-value {
    font-size: 0.88rem;
    color: var(--text-main);
    font-weight: 500;
}

.sidebar-links {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.88rem;
    padding: 8px 10px;
    border-radius: 8px;
    border: 1px solid var(--border);
    transition: all 0.2s;
}

.sidebar-link:hover {
    color: var(--text-main);
    border-color: var(--text-muted);
    background: #262626;
}

.sidebar-link i {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

/* Prev/Next Navigation */
.project-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-top: 4rem;
    padding-top: 2.5rem;
    border-top: 1px solid var(--border);
}

.project-nav-btn {
    display: flex;
    flex-direction: column;
    gap: 4px;
    text-decoration: none;
    padding: 1rem 1.25rem;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: var(--card-bg);
    transition: all 0.25s;
    min-height: 70px;
}

.project-nav-btn.next {
    text-align: right;
    align-items: flex-end;
}

.project-nav-btn:hover {
    border-color: var(--text-muted);
    background: #1f1f1f;
    transform: translateY(-2px);
}

.project-nav-label {
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 5px;
    font-family: 'Inter', sans-serif;
}

.project-nav-btn.next .project-nav-label {
    flex-direction: row-reverse;
}

.project-nav-label i {
    width: 12px;
    height: 12px;
}

.project-nav-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-main);
    font-family: 'Space Grotesk', sans-serif;
}

.project-nav-btn.empty {
    pointer-events: none;
    opacity: 0;
}

/* Responsive */
@media (max-width: 768px) {
    .project-detail-container {
        padding: 5rem 1.25rem 3rem;
    }

    .project-hero h1 {
        font-size: 2rem;
    }

    .project-content-grid {
        grid-template-columns: 1fr;
    }

    .project-sidebar {
        position: static;
    }

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

@media (max-width: 480px) {
    .project-hero h1 {
        font-size: 1.65rem;
    }

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