/* ========================================
   PROJECTS LIST PAGE STYLES
   ======================================== */

/* Projects Header */
.projects-header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: var(--steel-blue);
    opacity: 0.1;
    transform: rotate(45deg);
}

/* Filters Section */
.filters-section {
    background: var(--concrete-light);
    padding: var(--space-lg) 0;
    border-bottom: 2px solid var(--charcoal);
    position: sticky;
    top: 60px;
    z-index: 100;
    backdrop-filter: blur(10px);
    transition: top 0.3s ease-in-out;
}

body.nav-hidden .filters-section {
    top: 0;
}

.filters-wrapper {
    display: grid;
    grid-template-columns: minmax(280px, 1fr) auto auto;
    gap: var(--space-lg);
    align-items: center;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.filter-label {
    flex-shrink: 0;
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.875rem;
    letter-spacing: 0.05em;
    color: var(--warm-gray);
}

.filter-group--search {
    min-width: 0;
}

.filter-group--tags {
    grid-column: 1 / -1;
    align-items: flex-start;
}

.filter-search {
    width: 100%;
    min-width: 0;
    padding: var(--space-sm) var(--space-md);
    border: 2px solid var(--warm-gray);
    background: var(--concrete);
    color: var(--charcoal);
    font: inherit;
    font-weight: 600;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.filter-search::placeholder {
    color: var(--warm-gray);
    opacity: 1;
}

.filter-search:hover,
.filter-search:focus {
    border-color: var(--steel-blue);
    box-shadow: 0 0 0 3px rgba(55, 96, 114, 0.16);
    outline: none;
}

.filter-dropdown {
    background: var(--charcoal);
    color: var(--concrete);
    border: none;
    padding: var(--space-sm) var(--space-md);
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-dropdown:hover,
.filter-dropdown:focus {
    background: var(--steel-blue);
    outline: none;
}

.tag-filters {
    display: flex;
    gap: var(--space-xs);
    flex-wrap: wrap;
}

.tag-filter {
    background: var(--warm-gray);
    color: var(--charcoal);
    border: 2px solid transparent;
    padding: var(--space-xs) var(--space-md);
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.tag-filter:hover {
    background: var(--warm-gray-light);
}

.tag-filter.active {
    background: var(--steel-blue);
    color: var(--concrete);
    border-color: var(--steel-blue-dark);
}

.filter-stats {
    white-space: nowrap;
    font-weight: 700;
    color: var(--steel-blue);
}

/* Projects Timeline */
.projects-timeline {
    padding: var(--space-3xl) 0;
    min-height: 60vh;
}

.timeline-group {
    margin-bottom: var(--space-3xl);
    position: relative;
}

.timeline-group::before {
    content: '';
    position: absolute;
    left: 60px;
    top: 60px;
    bottom: 20px;
    width: 2px;
    background: var(--warm-gray);
    opacity: 0.3;
}

.timeline-title {
    display: flex;
    align-items: baseline;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
    position: relative;
}

.timeline-key {
    font-size: 3rem;
    font-weight: 900;
    color: var(--steel-blue);
    min-width: 100px;
}

.timeline-period {
    font-size: 1.125rem;
    font-weight: 400;
    color: var(--warm-gray);
    text-transform: none;
    letter-spacing: normal;
}

/* Projects Grid */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(400px, 1fr));
    gap: var(--space-md);
    padding-left: 120px;
}

.projects-grid--flat {
    padding-left: 0;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--steel-blue);
    transform: translateX(-100%);
    transition: transform var(--transition-base);
}

.project-card:hover::before {
    transform: translateX(0);
}

.project-duration {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--warm-gray);
}

.project-tags {
    display: flex;
    gap: var(--space-xs);
    flex-wrap: wrap;
    margin-bottom: var(--space-md);
}

.project-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-md);
    border-top: 1px solid var(--warm-gray);
    font-size: 0.875rem;
    color: var(--warm-gray);
}

.project-team {
    font-weight: 700;
}

.project-arrow {
    font-size: 1.25rem;
    transition: transform var(--transition-fast);
}

.project-card:hover .project-arrow {
    transform: translateX(5px);
}

/* More Projects */
.more-projects {
    padding: var(--space-3xl);
    text-align: center;
    background: var(--concrete-light);
    border-radius: 8px;
    margin-left: 120px;
}

.more-projects p {
    font-size: 1.25rem;
    color: var(--warm-gray);
    font-style: italic;
}

/* Loading State */
.projects-grid.loading {
    opacity: 0.5;
    pointer-events: none;
}

.project-card.hidden {
    display: none;
}

.projects-empty-state {
    max-width: 680px;
    margin: var(--space-2xl) auto;
    padding: var(--space-xl);
    border: 2px solid var(--charcoal);
    border-left: 8px solid var(--accent-orange);
    background: var(--concrete-light);
    text-align: center;
}

.projects-empty-state strong {
    display: block;
    margin-bottom: var(--space-sm);
    color: var(--charcoal);
    font-size: 1.25rem;
}

.projects-empty-state p {
    margin: 0;
    color: var(--warm-gray);
}

/* Responsive */
@media (max-width: 1024px) {
    .filters-wrapper {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }

    .filter-group--tags {
        grid-column: auto;
    }

    .filter-stats {
        text-align: right;
    }
}

@media (max-width: 768px) {
    .projects-header {
        padding: var(--space-xl) 0 var(--space-lg);
    }

    .page-title {
        font-size: 2.5rem;
    }

    .filters-section {
        position: static;
        padding: var(--space-md) 0;
    }

    .tag-filters {
        width: 100%;
        justify-content: flex-start;
    }

    .timeline-group::before {
        display: none;
    }

    .timeline-title {
        flex-direction: column;
        gap: var(--space-xs);
    }

    .timeline-key {
        font-size: 2rem;
        min-width: auto;
    }

    .projects-grid {
        padding-left: 0;
        grid-template-columns: 1fr;
    }

    .more-projects {
        margin-left: 0;
        padding: var(--space-xl);
    }
}

@media (max-width: 480px) {
    .filters-wrapper {
        gap: var(--space-lg);
    }

    .filter-group {
        flex-direction: column;
        align-items: stretch;
        gap: var(--space-sm);
    }

    .filter-dropdown,
    .filter-search {
        width: 100%;
    }

    .filter-label {
        text-align: center;
    }

    .tag-filters {
        justify-content: center;
    }

    .filter-stats {
        text-align: center;
        margin-top: var(--space-sm);
    }

    .page-title {
        font-size: 2.2rem;
    }

    .timeline-title {
        align-items: center;
    }
}