/* ===== FLIP CARD GRID ===== */
.flip-portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 30px;
    margin-top: 30px;
    padding-bottom: 50px;
}

@media (min-width: 992px) {
    .flip-portfolio-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 35px;
    }
}

/* ===== FLIP CARD CONTAINER ===== */
.flip-card {
    perspective: 1200px;
    /* Profundidade da perspectiva 3D */
    height: 420px;
    cursor: pointer;
    /* Animação de entrada (scroll reveal) */
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s cubic-bezier(0.25, 1, 0.5, 1),
        transform 0.8s cubic-bezier(0.25, 1, 0.5, 1);
}

.flip-card.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== FLIP CARD INNER (Rotação) ===== */
.flip-card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.8s cubic-bezier(0.4, 0.2, 0.2, 1);
    transform-style: preserve-3d;
    /* Habilita o 3D nos filhos */
    border-radius: 18px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.flip-card:hover .flip-card-inner {
    transform: rotateY(180deg);
    /* Vira o card no hover */
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

/* ===== FRENTE E VERSO ===== */
.flip-card-front,
.flip-card-back {
    position: absolute;
    inset: 0;
    backface-visibility: hidden;
    /* Esconde a face oposta */
    -webkit-backface-visibility: hidden;
    border-radius: 18px;
    overflow: hidden;
}

/* ===== FRENTE DO CARD ===== */
.flip-card-front {
    z-index: 2;
}

.flip-card-front img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.flip-card:hover .flip-card-front img {
    transform: scale(1.05);
}

/* Overlay gradiente escuro na frente */
.flip-card-front-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.9) 0%, rgba(0, 0, 0, 0.2) 50%, transparent 100%);
    z-index: 2;
}

/* Conteúdo na frente (título + tag) */
.flip-card-front-content {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 30px 25px;
    z-index: 3;
}

.flip-front-tag {
    display: inline-block;
    font-size: 10px;
    font-weight: 700;
    font-family: 'Lato', sans-serif;
    text-transform: uppercase;
    letter-spacing: 2.5px;
    color: #fff;
    background: rgba(255, 255, 255, 0.15);
    padding: 5px 14px;
    border-radius: 30px;
    margin-bottom: 12px;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.flip-front-title {
    font-size: 22px;
    font-weight: 700;
    color: #fff;
    margin: 0;
    line-height: 1.3;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
}

/* Ícone de "virar" no canto */
.flip-hint {
    position: absolute;
    top: 20px;
    right: 20px;
    z-index: 4;
    width: 38px;
    height: 38px;
    background: rgba(255, 255, 255, 0.12);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: #fff;
    font-size: 14px;
    transition: all 0.4s ease;
}

.flip-card:hover .flip-hint {
    background: rgba(255, 255, 255, 0.3);
    transform: rotate(180deg);
}

/* ===== VERSO DO CARD ===== */
.flip-card-back {
    transform: rotateY(180deg);
    /* Verso começa virado */
    background: linear-gradient(135deg, #111 0%, #1a1a1a 50%, #0d0d0d 100%);
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 40px 35px;
    z-index: 1;
}

/* Detalhe decorativo no verso */
.flip-card-back::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(200, 50, 50, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.flip-back-tag {
    display: inline-block;
    font-size: 10px;
    font-weight: 700;
    font-family: 'Lato', sans-serif;
    text-transform: uppercase;
    letter-spacing: 2.5px;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 18px;
    padding-bottom: 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.flip-back-title {
    font-size: 24px;
    font-weight: 700;
    color: #fff;
    margin: 0 0 20px;
    line-height: 1.3;
}

.flip-back-desc {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
    margin: 0 0 25px;
    flex-grow: 1;
    overflow: hidden;
    /* Limita o texto sem barra de rolagem */
    display: -webkit-box;
    -webkit-line-clamp: 7;
    line-clamp: 7;
    -webkit-box-orient: vertical;
    /* Fade suave na última linha */
    -webkit-mask-image: linear-gradient(to bottom, #000 80%, transparent 100%);
    mask-image: linear-gradient(to bottom, #000 80%, transparent 100%);
}

/* Botão estilizado no verso */
.flip-back-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    font-weight: 700;
    font-family: 'Lato', sans-serif;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.3);
    background: transparent;
    padding: 12px 24px;
    border-radius: 30px;
    cursor: pointer;
    transition: all 0.4s ease;
    align-self: flex-start;
}

.flip-back-btn:hover {
    background: #fff;
    color: #111;
    border-color: #fff;
}

.flip-back-btn i {
    transition: transform 0.3s ease;
}

.flip-back-btn:hover i {
    transform: translateX(4px);
}

/* ===== RESPONSIVO ===== */
@media (max-width: 768px) {
    .flip-card {
        height: 380px;
    }

    .flip-card-back {
        padding: 30px 25px;
    }

    .flip-back-title {
        font-size: 20px;
    }
}

/* ===== MOBILE: Toque para virar ===== */
.flip-card.is-flipped .flip-card-inner {
    transform: rotateY(180deg);
}

/* ===== ESTADO EXPANDIDO (VER MAIS / VER MENOS) ===== */
.flip-back-desc.is-expanded {
    display: block;
    -webkit-line-clamp: unset;
    line-clamp: unset;
    -webkit-mask-image: none;
    mask-image: none;
    overflow-y: auto;
    padding-right: 8px;
    /* Força o contêiner flex a restringir o tamanho e gerar barra de rolagem em vez de expandir a div infinitamente e cortar o botão: */
    min-height: 0;
}

/* Scrollbar Customizada na Descrição */
.flip-back-desc.is-expanded::-webkit-scrollbar {
    width: 4px;
}

.flip-back-desc.is-expanded::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 4px;
}

.flip-back-desc.is-expanded::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 4px;
}

.flip-back-desc.is-expanded::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.4);
}