/* ═══════════════════════════════════════════════════════════════
   AI BUILD INFRA — Projects & Case Studies Stylesheet
   Clean, Minimal SaaS Design System
   ═══════════════════════════════════════════════════════════════ */

/* ── Filter Controls (Clean Pill Tabs) ───────────────────────── */
.portfolio-filters-wrapper {
    margin-bottom: 2.5rem;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 0.5rem;
}

.portfolio-filters {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.5rem;
    padding: 6px;
    background: #FFFFFF;
    border: 1px solid #E2E8F0;
    border-radius: 999px;
    max-width: fit-content;
    margin: 0 auto;
}

@media (max-width: 991px) {
    .portfolio-filters {
        flex-wrap: nowrap;
        justify-content: flex-start;
        border-radius: 12px;
        min-width: max-content;
    }
}

.portfolio-filter-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 15px;
    font-size: 0.84rem;
    font-weight: 600;
    color: #64748B;
    background: transparent;
    border: none;
    border-radius: 999px;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
    text-decoration: none;
    outline: none;
}

.portfolio-filter-btn:hover {
    color: #0F172A;
    background: #F1F5F9;
}

.portfolio-filter-btn.active {
    background: #0F172A;
    color: #FFFFFF !important;
}

.portfolio-filter-btn.active i {
    color: #F97316;
}

.portfolio-filter-btn .filter-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1px 6px;
    border-radius: 999px;
    font-size: 0.7rem;
    font-weight: 700;
    background: #F1F5F9;
    color: #475569;
}

.portfolio-filter-btn.active .filter-count {
    background: rgba(255, 255, 255, 0.2);
    color: #FFFFFF;
}

/* ── Responsive Grid ───────────────────────────────────────── */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.75rem;
    align-items: stretch;
}

@media (max-width: 1199px) {
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
}

@media (max-width: 767px) {
    .projects-grid {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }
}

/* ── Minimalist Clean Project Card ─────────────────────────── */
.project-card {
    background: #FFFFFF;
    border: 1px solid #E2E8F0;
    border-radius: 12px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 100%;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.project-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px -6px rgba(15, 23, 42, 0.08);
    border-color: #CBD5E1;
}

/* Thumbnail Visual */
.project-card__thumbnail {
    position: relative;
    width: 100%;
    height: 190px;
    background: #0F172A;
    overflow: hidden;
    flex-shrink: 0;
}

.project-card__thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.project-card:hover .project-card__thumbnail img {
    transform: scale(1.04);
}

.project-card__badge {
    position: absolute;
    top: 12px;
    right: 12px;
    background: rgba(15, 23, 42, 0.85);
    color: #FFFFFF;
    padding: 3px 9px;
    border-radius: 6px;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

/* Card Body */
.project-card__body {
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.project-card__category {
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #F97316;
    margin-bottom: 0.35rem;
}

.project-card__title {
    font-size: 1.15rem;
    font-weight: 700;
    color: #0F172A;
    margin-bottom: 0.4rem;
    line-height: 1.35;
}

.project-card__title a {
    color: #0F172A;
    text-decoration: none;
    transition: color 0.2s ease;
}

.project-card__title a:hover {
    color: #F97316;
}

.project-card__desc {
    font-size: 0.875rem;
    color: #64748B;
    line-height: 1.5;
    margin-bottom: 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    min-height: 2.6rem;
}

/* Clean Tags */
.project-card__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    margin-bottom: 1.25rem;
}

.project-card__tag {
    font-size: 0.72rem;
    font-weight: 500;
    padding: 2px 7px;
    background: #F8FAFC;
    border: 1px solid #E2E8F0;
    border-radius: 4px;
    color: #475569;
}

/* Card Footer */
.project-card__footer {
    margin-top: auto;
    padding-top: 0.85rem;
    border-top: 1px solid #F1F5F9;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
}

.project-btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    background: #0F172A;
    color: #FFFFFF !important;
    font-size: 0.82rem;
    font-weight: 600;
    padding: 0.45rem 1rem;
    border-radius: 6px;
    text-decoration: none;
    transition: all 0.15s ease-out;
    flex-grow: 1;
}

.project-btn-primary:hover {
    background: #1E293B;
    color: #FFFFFF !important;
}

.project-btn-primary:active {
    transform: scale(0.98);
}

.project-btn-primary i {
    transition: transform 0.2s ease;
}

.project-btn-primary:hover i {
    transform: translateX(3px);
}

.project-btn-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 6px;
    background: #F8FAFC;
    border: 1px solid #E2E8F0;
    color: #475569 !important;
    text-decoration: none;
    font-size: 0.85rem;
    transition: all 0.15s ease-out;
    flex-shrink: 0;
}

.project-btn-link:hover {
    background: #F97316;
    border-color: #F97316;
    color: #FFFFFF !important;
}

.project-btn-link:active {
    transform: scale(0.95);
}

/* ── Case Study Design System ──────────────────────────────── */
.cs-sticky-sidebar {
    position: sticky;
    top: 110px;
    z-index: 10;
}

.cs-card {
    background: #FFFFFF;
    border: 1px solid #E2E8F0;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(15, 23, 42, 0.04);
}

.cs-pipeline {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: #0F172A;
    color: #FFFFFF;
    border-radius: 12px;
    padding: 1.5rem;
    gap: 1rem;
    flex-wrap: wrap;
}

.cs-pipeline-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    flex: 1;
    min-width: 120px;
}

.cs-pipeline-icon {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    background: rgba(56, 189, 248, 0.15);
    color: #38BDF8;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    border: 1px solid rgba(56, 189, 248, 0.3);
}

.cs-pipeline-title {
    font-size: 0.85rem;
    font-weight: 700;
    color: #FFFFFF;
    margin-bottom: 0.2rem;
}

.cs-pipeline-desc {
    font-size: 0.72rem;
    color: #94A3B8;
}

.cs-pipeline-arrow {
    color: #64748B;
    font-size: 1.25rem;
}

.cs-challenge-card {
    background: #FFFFFF;
    border: 1px solid #E2E8F0;
    border-left: 4px solid #F97316;
    border-radius: 8px;
    padding: 1.25rem;
}

.cs-solution-card {
    background: #F8FAFC;
    border: 1px solid #E2E8F0;
    border-left: 4px solid #10B981;
    border-radius: 8px;
    padding: 1.25rem;
}