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

.container-narrow {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

@media (max-width: 768px) {
    .container-narrow {
        padding: 0 var(--spacing-md);
    }
}

/* ===================================
   PROJECT HERO
   =================================== */
.project-hero {
    margin-top: 80px;
    width: 100%;
    max-height: 70vh;
    overflow: hidden;
    background-color: var(--color-bg-alt);
}

.project-hero-image {
    width: 100%;
    height: 100%;
}

.project-hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* ===================================
   PROJECT HEADER
   =================================== */
.project-detail {
    padding: var(--spacing-2xl) 0 var(--spacing-3xl) 0;
}

.back-link {
    display: inline-flex;
    align-items: center;
    color: var(--color-text-light);
    font-weight: 400;
    font-size: var(--text-sm);
    margin-bottom: var(--spacing-lg);
    transition: color var(--transition-medium);
    letter-spacing: 0.01em;
}

.back-link:hover {
    color: var(--color-primary);
    transform: translateX(-4px);
}

.project-header {
    margin-bottom: var(--spacing-2xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--color-border);
}

.project-title-large {
    font-family: var(--font-heading);
    font-size: var(--text-3xl);
    font-weight: 500;
    line-height: 1.15;
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.03em;
}

/* ===================================
   PROJECT META
   =================================== */
.project-meta {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

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

.meta-label {
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-light);
    font-weight: 400;
}

.meta-value {
    font-size: var(--text-base);
    color: var(--color-primary);
    font-weight: 500;
    letter-spacing: -0.01em;
}

/* ===================================
   PROJECT SECTIONS
   =================================== */
.project-section {
    margin-bottom: var(--spacing-2xl);
}

.section-heading {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    font-weight: 500;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    margin-top: var(--spacing-lg);
    letter-spacing: -0.02em;
}

.project-text {
    font-size: var(--text-base);
    line-height: 1.75;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
}

/* Features List */
.features-list {
    list-style: none;
    padding: 0;
    margin: var(--spacing-lg) 0;
}

.features-list li {
    font-size: var(--text-sm);
    line-height: 1.75;
    color: var(--color-text-light);
    padding-left: 1.5rem;
    margin-bottom: var(--spacing-sm);
    position: relative;
}

.features-list li::before {
    content: '—';
    position: absolute;
    left: 0;
    color: var(--color-text-light);
    font-weight: normal;
}

/* ===================================
   PROJECT GALLERY
   =================================== */
.project-gallery {
    margin: var(--spacing-2xl) 0;
}

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

.gallery-item {
    overflow: hidden;
    background-color: var(--color-bg-alt);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: opacity var(--transition-slow);
    display: block;
    cursor: pointer;
}

.gallery-item:hover img {
    opacity: 0.92;
}

.gallery-item-wide {
    grid-column: span 2;
}

.gallery-item figcaption {
    padding: var(--spacing-md) 0;
    font-size: var(--text-xs);
    color: var(--color-text-light);
    font-style: italic;
    text-align: center;
    letter-spacing: 0.01em;
}

/* ===================================
   PROJECT NAVIGATION
   =================================== */
.project-navigation {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-3xl);
    padding-top: var(--spacing-2xl);
    border-top: 1px solid var(--color-border);
}

.nav-btn {
    display: flex;
    flex-direction: column;
    padding: var(--spacing-lg);
    border: 1px solid var(--color-border);
    transition: all var(--transition-medium);
    min-height: 100px;
    justify-content: center;
}

.nav-btn:hover {
    border-color: var(--color-primary);
    background-color: var(--color-bg-alt);
}

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

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

.nav-label {
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-light);
    font-weight: 400;
    margin-bottom: var(--spacing-sm);
}

.nav-project {
    font-size: var(--text-base);
    color: var(--color-primary);
    font-weight: 500;
    letter-spacing: -0.01em;
}

/* ===================================
   RESPONSIVE DESIGN
   =================================== */
@media (max-width: 768px) {
    .project-hero {
        max-height: 50vh;
    }

    .project-detail {
        padding: var(--spacing-xl) 0 var(--spacing-2xl) 0;
    }

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

    .gallery-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .gallery-item-wide {
        grid-column: span 1;
    }

    .project-navigation {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .nav-btn-next {
        text-align: left;
        align-items: flex-start;
    }
}

@media (max-width: 480px) {
    .project-meta {
        grid-template-columns: 1fr;
    }
}

/* ===================================
   IMAGE LIGHTBOX
   =================================== */
.lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.95);
    z-index: 10000;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.lightbox.active {
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 1;
}

.lightbox-content {
    position: relative;
    max-width: 90%;
    max-height: 90%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

#lightbox-img {
    max-width: 100%;
    max-height: 85vh;
    width: auto;
    height: auto;
    object-fit: contain;
    display: block;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.lightbox-caption {
    color: #fafafa;
    font-size: var(--text-sm);
    text-align: center;
    margin-top: var(--spacing-md);
    padding: 0 var(--spacing-lg);
    font-style: italic;
    max-width: 600px;
}

/* Lightbox Controls */
.lightbox-close {
    position: absolute;
    top: 20px;
    right: 30px;
    font-size: 40px;
    color: #fafafa;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 10001;
    line-height: 1;
    padding: 10px;
    transition: opacity 0.2s ease;
}

.lightbox-close:hover {
    opacity: 0.7;
}

.lightbox-prev,
.lightbox-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    font-size: 36px;
    color: #fafafa;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.3);
    cursor: pointer;
    padding: 16px 20px;
    transition: all 0.2s ease;
    z-index: 10001;
    backdrop-filter: blur(10px);
}

.lightbox-prev:hover,
.lightbox-next:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
}

.lightbox-prev {
    left: 30px;
}

.lightbox-next {
    right: 30px;
}

.lightbox-counter {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    color: #fafafa;
    font-size: var(--text-sm);
    background: rgba(0, 0, 0, 0.5);
    padding: 8px 16px;
    border-radius: 20px;
    backdrop-filter: blur(10px);
}

/* Mobile Responsive */
@media (max-width: 768px) {
    #lightbox-img {
        max-height: 70vh;
    }

    .lightbox-close {
        top: 10px;
        right: 10px;
        font-size: 32px;
    }

    .lightbox-prev,
    .lightbox-next {
        font-size: 28px;
        padding: 12px 16px;
    }

    .lightbox-prev {
        left: 10px;
    }

    .lightbox-next {
        right: 10px;
    }

    .lightbox-caption {
        font-size: var(--text-xs);
        padding: 0 var(--spacing-md);
    }

    .lightbox-counter {
        bottom: 10px;
        font-size: var(--text-xs);
        padding: 6px 12px;
    }
}

@media (max-width: 480px) {
    .lightbox-content {
        max-width: 95%;
        max-height: 95%;
    }

    #lightbox-img {
        max-height: 65vh;
    }

    .lightbox-prev,
    .lightbox-next {
        font-size: 24px;
        padding: 10px 14px;
    }
}