/* ========================================
   GIS PROJECTS PAGE - MODERN DESIGN
   Masonry Grid with Filtering & Search
   ======================================== */

/* ========================================
   PAGE HEADER
   ======================================== */

.page-header {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: white;
    padding: var(--spacing-3xl) 0 var(--spacing-2xl);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        repeating-linear-gradient(
            45deg,
            transparent,
            transparent 2px,
            rgba(255, 255, 255, 0.02) 2px,
            rgba(255, 255, 255, 0.02) 4px
        );
    pointer-events: none;
}

.page-header .container {
    position: relative;
    z-index: 2;
}

.page-header h1 {
    color: white;
    margin-bottom: var(--spacing-md);
}

.header-description {
    font-size: clamp(1rem, 1.5vw, 1.25rem);
    line-height: var(--line-height-relaxed);
    max-width: 800px;
    margin: 0 auto;
    color: rgba(255, 255, 255, 0.95);
}

/* ========================================
   FILTER SECTION
   ======================================== */

.filter-section {
    background: white;
    padding: var(--spacing-xl) 0 var(--spacing-md);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base) var(--ease-in-out);
}

.filter-controls {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

/* Results Counter */
.results-counter {
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
}

.results-counter span {
    font-weight: var(--font-weight-semibold);
    color: var(--color-secondary);
}

/* ========================================
   PROJECTS SECTION
   ======================================== */

.projects-section {
    padding: var(--spacing-2xl) 0;
    background: var(--color-background);
}

/* ========================================
   MASONRY GRID LAYOUT
   ======================================== */

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--spacing-lg);
    grid-auto-flow: dense;
}

/* Modern CSS Masonry (when supported) */
@supports (grid-template-rows: masonry) {
    .projects-grid {
        grid-template-rows: masonry;
    }
}

/* ========================================
   PROJECT CARD - MODERN REDESIGN
   ======================================== */

.gis-project-card {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base) var(--ease-out);
    display: flex;
    flex-direction: column;
    position: relative;
}

.gis-project-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

/* Hidden state for filtering */
.gis-project-card.hidden {
    display: none;
}

/* Project Image Container */
.project-image-container {
    position: relative;
    width: 100%;
    overflow: hidden;
    cursor: pointer;
}

.project-image-container img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform var(--transition-slow) var(--ease-out);
}

.gis-project-card:hover .project-image-container img {
    transform: scale(1.08);
}

/* Gradient overlay for better category badge visibility */
.project-image-container::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        to bottom,
        rgba(0, 0, 0, 0.05) 0%,
        transparent 30%,
        transparent 70%,
        rgba(0, 0, 0, 0.2) 100%
    );
    pointer-events: none;
}

/* Project Body */
.project-body {
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    flex-grow: 1;
}

.project-body h3 {
    font-size: clamp(1.125rem, 2vw, 1.5rem);
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
    line-height: 1.3;
    margin-bottom: 0;
    transition: color var(--transition-base) ease;
}

.gis-project-card:hover .project-body h3 {
    color: var(--color-secondary);
}

.project-body p {
    font-size: var(--font-size-sm);
    line-height: var(--line-height-normal);
    color: var(--color-text);
    margin-bottom: 0;
}

/* Tech Tags */
.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-xs);
}

/* Key Result Box */
.key-result {
    background: var(--color-neutral-50);
    border-left: 4px solid var(--color-secondary);
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    line-height: var(--line-height-normal);
    color: var(--color-text);
    margin-top: var(--spacing-sm);
}

.key-result strong {
    color: var(--color-secondary);
    font-weight: var(--font-weight-semibold);
}

/* ========================================
   LIGHTBOX
   ======================================== */

.lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    z-index: var(--z-modal);
    align-items: center;
    justify-content: center;
    cursor: pointer;
    padding: var(--spacing-lg);
}

.lightbox img {
    max-width: 95%;
    max-height: 95%;
    object-fit: contain;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xl);
}

.lightbox-close {
    position: absolute;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    font-size: 3rem;
    color: white;
    cursor: pointer;
    z-index: var(--z-tooltip);
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transition: all var(--transition-base) var(--ease-in-out);
}

.lightbox-close:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: rotate(90deg);
}

/* ========================================
   LOAD MORE BUTTON
   ======================================== */

.load-more-container {
    text-align: center;
    margin-top: var(--spacing-2xl);
}

.load-more-container .btn {
    padding: 1rem 2.5rem;
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */

@media (max-width: 1200px) {
    .projects-grid {
        grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
        gap: var(--spacing-md);
    }
}

@media (max-width: 768px) {
    .page-header {
        padding: var(--spacing-2xl) 0 var(--spacing-xl);
    }

    .filter-section {
        position: static;
        padding: var(--spacing-lg) 0;
    }

    .filter-controls {
        gap: var(--spacing-sm);
    }

    .search-wrapper {
        max-width: 100%;
    }

    .filter-pills {
        flex-wrap: wrap;
        gap: var(--spacing-xs);
    }

    .filter-pill {
        flex: 1 1 calc(50% - var(--spacing-xs));
        min-width: 140px;
        justify-content: center;
        text-align: center;
    }

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

    .project-body {
        padding: var(--spacing-sm);
    }

    .lightbox {
        padding: var(--spacing-md);
    }

    .lightbox-close {
        top: var(--spacing-sm);
        right: var(--spacing-sm);
        width: 40px;
        height: 40px;
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .filter-pill {
        flex: 1 1 100%;
        min-width: unset;
    }

    .projects-section {
        padding: var(--spacing-xl) 0;
    }
}

/* ========================================
   ANIMATIONS
   ======================================== */

/* Fade in animation for cards */
.gis-project-card {
    opacity: 0;
    animation: cardFadeIn 0.6s var(--ease-out) forwards;
}

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

/* Staggered animation delays */
.gis-project-card:nth-child(1) { animation-delay: 0.05s; }
.gis-project-card:nth-child(2) { animation-delay: 0.1s; }
.gis-project-card:nth-child(3) { animation-delay: 0.15s; }
.gis-project-card:nth-child(4) { animation-delay: 0.2s; }
.gis-project-card:nth-child(5) { animation-delay: 0.25s; }
.gis-project-card:nth-child(6) { animation-delay: 0.3s; }
.gis-project-card:nth-child(7) { animation-delay: 0.35s; }
.gis-project-card:nth-child(8) { animation-delay: 0.4s; }
.gis-project-card:nth-child(9) { animation-delay: 0.45s; }
.gis-project-card:nth-child(n+10) { animation-delay: 0.5s; }

/* Smooth filter transitions */
.gis-project-card {
    transition: opacity var(--transition-base) var(--ease-in-out),
                transform var(--transition-base) var(--ease-out),
                box-shadow var(--transition-base) var(--ease-out);
}

/* ========================================
   ACCESSIBILITY
   ======================================== */

.project-image-container:focus-visible {
    outline: 3px solid var(--color-secondary);
    outline-offset: 4px;
}

/* Keyboard navigation for lightbox */
.lightbox:focus {
    outline: none;
}

/* ========================================
   PRINT STYLES
   ======================================== */

@media print {
    .filter-section,
    .lightbox,
    .load-more-container {
        display: none;
    }

    .gis-project-card {
        break-inside: avoid;
        page-break-inside: avoid;
        box-shadow: none;
        border: 1px solid var(--color-neutral-300);
    }

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