/* Grid karet */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(310px, 1fr));
    gap: 24px;
    margin-top: 36px;
}

/* Karta projektu */
.project-card {
    position: relative;
    /* background: var(--card-bg, #fff); */
    border: 1px solid var(--border, #e5e7eb);
    border-radius: 16px;
    padding: 28px 26px 26px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
    opacity: 0;
    transform: translateY(24px);
}

.project-card.visible {
    opacity: 1;
    transform: translateY(0);
    transition: opacity .5s ease, transform .5s ease, box-shadow .25s ease, border-color .25s ease;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 16px 48px rgba(74, 144, 217, 0.14), 0 4px 16px rgba(0, 0, 0, 0.05);
    border-color: var(--brand-bright, #4a90d9);
}

/* Velké číslo v pozadí karty — přes data-project-label atribut */
.project-card::before {
    content: attr(data-project-label);
    position: absolute;
    bottom: -14px;
    right: -2px;
    font-size: 108px;
    font-weight: 900;
    line-height: 1;
    color: var(--brand-bright, #4a90d9);
    opacity: .045;
    font-family: 'Syne', 'IBM Plex Sans', system-ui, sans-serif;
    letter-spacing: -.04em;
    pointer-events: none;
    user-select: none;
    transition: opacity .28s ease, transform .28s ease;
}

.project-card:hover::before {
    opacity: .1;
    transform: scale(1.06) translate(-5px, -6px);
}

/* Levý akcentní proužek */
.project-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 100%;
    background: linear-gradient(180deg, var(--brand-bright, #4a90d9) 0%, rgba(46, 196, 160, .5) 100%);
    border-radius: 16px 0 0 16px;
    opacity: 0;
    transition: opacity .25s ease;
}

.project-card:hover::after,
.project-card.featured::after {
    opacity: 1;
}

/* Karta "featured" vždy s proužkem + jemné pozadí */
.project-card.featured {
    border-color: rgba(74, 144, 217, 0.3);
    background: linear-gradient(135deg, rgba(74, 144, 217, 0.04) 0%, var(--card-bg, #fff) 65%);
}

.project-card.featured::before {
    opacity: .07;
}

/* Malý číselný badge */
.project-number {
    display: inline-block;
    font-size: 10.5px;
    font-weight: 800;
    letter-spacing: .14em;
    color: var(--brand-bright, #4a90d9);
    background: rgba(74, 144, 217, .1);
    border: 1px solid rgba(74, 144, 217, .2);
    border-radius: 20px;
    padding: 2px 9px;
    margin-bottom: 13px;
    font-family: 'IBM Plex Mono', 'Courier New', monospace;
}

/* Obsah */
.project-content {
    display: flex;
    flex-direction: column;
    flex: 1;
    gap: 10px;
}

.project-title {
    font-size: 19px;
    font-weight: 700;
    color: var(--text-1, #111);
    line-height: 1.3;
    margin: 0;
}

.project-description {
    text-align: justify;
    font-size: 13.5px;
    color: var(--text-2, #6b7280);
    line-height: 1.65;
    margin: 0;
    flex: 1;
}

/* Tagy */
.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 4px;
}

.tag {
    font-size: 11px;
    font-weight: 600;
    padding: 3px 9px;
    border-radius: 20px;
    background: var(--surface-2, #f3f4f6);
    color: var(--text-2, #6b7280);
    letter-spacing: .02em;
    border: 1px solid var(--border, #e5e7eb);
}

/* Link tlačítko */
.project-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 16px;
    padding: 9px 16px;
    background: var(--brand-bright, #4a90d9);
    color: #fff;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 600;
    text-decoration: none;
    align-self: flex-start;
    transition: background .18s, transform .18s, box-shadow .18s;
    position: relative;
    z-index: 1;
}

.project-link:hover {
    background: var(--brand, #2d6fc4);
    transform: translateX(3px);
    box-shadow: 0 4px 14px rgba(74, 144, 217, 0.35);
}

.project-link .arrow {
    width: 15px;
    height: 15px;
    flex-shrink: 0;
    transition: transform .18s;
}

.project-link:hover .arrow {
    transform: translateX(3px);
}

/* .project-accent div (ponechán v HTML pro zpětnou kompatibilitu, ale skryt) */
.project-accent {
    display: none;
}

/* Zápatí sekce */
.portfolio-footer-note {
    margin-top: 48px;
    padding: 20px 24px;
    background: linear-gradient(135deg, rgba(78, 146, 240, 0.06), rgba(46, 196, 160, 0.06));
    border: 1px solid rgba(78, 146, 240, 0.2);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 14px;
}

.portfolio-footer-note p {
    font-size: 14px;
    color: var(--text-2, #6b7280);
    margin: 0;
}

.portfolio-footer-note strong {
    color: var(--text-1, #111);
}

/* Responzivita */
@media (max-width: 640px) {
    .portfolio-grid {
        grid-template-columns: 1fr;
    }

    .project-card {
        padding: 22px 18px 20px;
    }

    .project-card::before {
        font-size: 80px;
    }
}