/*
============================================================
PROJECTS.CSS
============================================================
*/

.projects-section {
    background: var(--bg-secondary);
}

/* Filter Buttons */
.filter-container {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-bottom: 3rem;
}

.filter-btn {
    padding: 0.5rem 1.375rem;
    background: transparent;
    border: 1.5px solid var(--border-medium);
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 50px;
    transition: all 0.25s ease;
    cursor: pointer;
    letter-spacing: 0.2px;
    min-height: 40px;
}

.filter-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(74, 222, 128, 0.06);
}

.filter-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: #080d1a;
    box-shadow: var(--glow-green);
}

/* Project Grid */
.project-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.75rem;
}

.project-card.featured { grid-column: 1 / -1; }

.project-grid > .project-card:not(.featured):last-child:nth-child(even) {
    grid-column: 1 / -1;
}

/* ── Base Card ── */
.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: 18px;
    padding: 1.75rem;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(20px);
    transition:
        opacity 0.5s ease,
        transform 0.5s ease,
        background 0.3s ease,
        border-color 0.3s ease,
        box-shadow 0.3s ease;
}

.project-card.in-view {
    opacity: 1;
    transform: translateY(0);
}

.project-card:nth-child(1) { transition-delay: 0.05s; }
.project-card:nth-child(2) { transition-delay: 0.12s; }
.project-card:nth-child(3) { transition-delay: 0.19s; }
.project-card:nth-child(4) { transition-delay: 0.26s; }
.project-card:nth-child(5) { transition-delay: 0.33s; }

/* Top accent bar on hover */
.project-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.project-card:hover::before { opacity: 1; }

.project-card:hover {
    transform: translateY(-6px);
    background: var(--bg-card-hover);
    border-color: rgba(74, 222, 128, 0.22);
    box-shadow: 0 16px 40px rgba(0,0,0,0.5), var(--glow-green);
}

.project-card.in-view:hover { transform: translateY(-6px); }

/* Featured */
.project-card.featured {
    border-color: rgba(74, 222, 128, 0.18);
    background: linear-gradient(135deg, var(--bg-card) 60%, rgba(74,222,128,0.04) 100%);
}

.project-card.featured:hover {
    border-color: rgba(74, 222, 128, 0.35);
    box-shadow: 0 20px 50px rgba(0,0,0,0.6), 0 0 40px rgba(74,222,128,0.18);
}

/* Card header */
.card-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-bottom: 0.875rem;
}

.card-icon {
    font-size: 1.875rem;
    line-height: 1;
    flex-shrink: 0;
}

.card-badges {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.4px;
    text-transform: uppercase;
}

.badge-founder {
    background: rgba(167, 139, 250, 0.15);
    color: var(--accent-purple);
    border: 1px solid rgba(167, 139, 250, 0.3);
}

.badge-featured {
    background: rgba(74, 222, 128, 0.12);
    color: var(--primary);
    border: 1px solid rgba(74, 222, 128, 0.25);
}

.badge-soon {
    background: rgba(251, 191, 36, 0.12);
    color: #fbbf24;
    border: 1px solid rgba(251, 191, 36, 0.25);
}

/* Heading */
.project-card h3 {
    font-size: 1.15rem;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    line-height: 1.35;
}

/* Tech Tags */
.tech-tags-container {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
    margin-bottom: 0.875rem;
}

.tech-tag {
    padding: 0.25rem 0.7rem;
    background: rgba(255,255,255,0.05);
    color: var(--text-secondary);
    font-size: 0.7rem;
    font-weight: 600;
    border-radius: 50px;
    border: 1px solid var(--border-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all 0.25s ease;
}

.project-card:hover .tech-tag {
    background: rgba(74, 222, 128, 0.08);
    color: var(--primary-light);
    border-color: rgba(74, 222, 128, 0.2);
}

/* Description */
.project-card p {
    flex-grow: 1;
    font-size: 0.9375rem;
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
}

/* Links */
.project-links {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-top: auto;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.625rem 1.25rem;
    background: rgba(74, 222, 128, 0.1);
    color: var(--primary);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 8px;
    border: 1px solid rgba(74, 222, 128, 0.2);
    transition: all 0.25s ease;
    min-height: 44px;
}

.project-link:hover {
    background: var(--primary);
    color: #080d1a;
    transform: translateY(-2px);
    box-shadow: var(--glow-green);
}

.project-link i { font-size: 0.95rem; }

.project-link-demo {
    background: var(--primary);
    color: #080d1a;
    border-color: var(--primary);
    font-weight: 700;
}

.project-link-demo:hover {
    background: var(--primary-light);
    border-color: var(--primary-light);
    color: #080d1a;
    box-shadow: 0 0 24px rgba(74,222,128,0.4);
}

.project-link-soon {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.625rem 1.25rem;
    background: rgba(255,255,255,0.03);
    color: var(--text-tertiary);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 8px;
    border: 1px dashed var(--border-light);
    cursor: default;
    user-select: none;
    min-height: 44px;
}

.project-link-github {
    background: rgba(255,255,255,0.04);
    color: var(--text-secondary);
    border-color: var(--border-medium);
}

.project-link-github:hover {
    background: rgba(255,255,255,0.1);
    color: var(--text-primary);
    border-color: var(--border-medium);
    box-shadow: none;
}

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

/* Skeleton */
.project-skeleton {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: 18px;
    min-height: 240px;
    position: relative;
    overflow: hidden;
}

.project-skeleton::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.04) 50%, transparent 100%);
    animation: skeleton-shimmer 1.4s infinite;
}

@keyframes skeleton-shimmer {
    0%   { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.projects-error {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    padding: 3rem;
    color: var(--text-tertiary);
    font-size: 0.95rem;
}

.projects-error i { font-size: 2rem; }

/* ── Tablet (≤ 1024px) ── */
@media (max-width: 1024px) {
    .project-grid { gap: 1.25rem; }
    .project-card { padding: 1.5rem; }
}

/* ── Mobile (≤ 640px) — single column ── */
@media (max-width: 640px) {
    .project-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .project-card {
        padding: 1.25rem;
        border-radius: 14px;
        -webkit-tap-highlight-color: transparent;
    }

    /* Disable hover lift on touch */
    .project-card:hover,
    .project-card.in-view:hover {
        transform: none;
        box-shadow: none;
    }

    .card-icon { font-size: 1.625rem; }
    .project-card h3 { font-size: 1.05rem; }
    .project-card p { font-size: 0.9rem; }

    .project-link,
    .project-link-soon {
        flex: 1;
        justify-content: center;
        padding: 0.75rem 1rem;
        font-size: 0.85rem;
    }

    .project-links { gap: 0.5rem; }

    .filter-container { gap: 0.5rem; margin-bottom: 2rem; }
    .filter-btn {
        padding: 0.5rem 1rem;
        font-size: 0.825rem;
    }
}