/* =========================================
   SANTUÁRIO DE VOCABULÁRIO - CARDS PRACTICE
   Arquivo Limpo e Unificado (UI e Animações)
   ========================================= */

/* Modal e Fundo */
.modal.fullscreen {
    padding: 0;
}

.practice-container {
    background: var(--bg-secondary);
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    position: relative;
    /* Animação suave ao abrir o modal */
    animation: fadeSlideUp 0.5s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes fadeSlideUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Cabeçalho e Botão de Fechar */
.practice-header {
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--shadow);
}

.practice-header h2 {
    margin: 0;
    font-size: 1.5rem;
    color: var(--text-primary);
}

.close-practice {
    background: none;
    border: none;
    font-size: 2rem;
    cursor: pointer;
    color: var(--text-secondary);
    transition: color 0.3s ease, transform 0.3s ease;
}

.close-practice:hover {
    color: var(--accent);
    transform: scale(1.1); /* O botão de fechar cresce ao passar o rato */
}

/* Barra de Progresso */
.practice-progress {
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--shadow);
}

.progress-bar-container {
    flex: 1;
    height: 10px;
    background-color: var(--shadow);
    border-radius: 5px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--accent), var(--accent-hover));
    border-radius: 5px;
    /* A Barra avança suavemente */
    transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.progress-text {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* =========================================
   O PALCO 3D E O CARTÃO (O SEGREDO DA FLUIDEZ)
   ========================================= */
.card-container {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    perspective: 1500px; /* Cria a profundidade 3D */
}

.practice-card {
    position: relative;
    width: 100%;
    max-width: 500px;
    height: 320px;
    cursor: pointer;
    
    /* O Motor da Animação 3D */
    transform-style: preserve-3d;
    transition: transform 0.7s cubic-bezier(0.4, 0.2, 0.2, 1), box-shadow 0.3s ease;
    border-radius: var(--card-border-radius);
    box-shadow: 0 6px 20px var(--shadow);
}

/* Efeito de levitar ao passar o rato no cartão */
/* .practice-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 35px var(--shadow);
} */

/* O Giro Principal! (Invocado pelo JavaScript) */
.practice-card.flipped {
    transform: rotateY(180deg);
}

/* Levitando quando já está virado de costas */
/* .practice-card.flipped:hover {
    transform: rotateY(180deg) translateY(-8px);
} */

/* Frente e Costas do Cartão */
.practice-card .card-front,
.practice-card .card-back {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden; /* Esconde a face não visível */
    border-radius: var(--card-border-radius);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: var(--card-padding);
    /* Desativa o clique direto nas faces para o JS captar só o pai */
    pointer-events: none; 
}

/* Reativa os cliques em botões internos do cartão (como o de Informações) */
.practice-card .card-front *, 
.practice-card .card-back * {
    pointer-events: auto;
}

/* Frente do Cartão */
.practice-card .card-front {
    background: var(--card-bg);
    transform: rotateY(0deg); 
    z-index: 2;
}

/* Costas do Cartão */
.practice-card .card-back {
    background: var(--bg-secondary);
    transform: rotateY(180deg); /* Já nasce de costas, esperando o pai girar */
}

/* Barras Superiores de Cores (O SRS) */
.practice-card .card-front::before,
.practice-card .card-back::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 6px;
    border-radius: var(--card-border-radius) var(--card-border-radius) 0 0;
    transition: background-color 0.4s ease;
}

.practice-card.unread .card-front::before, .practice-card.unread .card-back::before { background-color: var(--status-unread); }
.practice-card.reading .card-front::before, .practice-card.reading .card-back::before { background-color: var(--status-reading); }
.practice-card.familiar .card-front::before, .practice-card.familiar .card-back::before { background-color: var(--status-familiar); }
.practice-card.memorized .card-front::before, .practice-card.memorized .card-back::before { background-color: var(--status-memorized); }

/* Tipografia interna do Cartão */
.practice-card .greek-word {
    font-size: 2.8rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.practice-card .transliteration {
    font-size: 1.2rem;
    color: var(--accent);
    font-style: italic;
    margin-bottom: 1.5rem;
}

.practice-card .meaning {
    font-size: 1.5rem;
    color: var(--text-primary);
    text-align: center;
    line-height: 1.4;
}

.practice-card .card-footer {
    position: absolute;
    bottom: 1.5rem;
    width: calc(100% - 4rem);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.flip-hint, .confidence-prompt {
    font-size: 0.85rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

/* =========================================
   CONTROLES DE PRÁTICA (Setas e Botões 1-4)
   ========================================= */
.practice-controls {
    padding: 1.5rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-top: 1px solid var(--shadow);
    background: var(--bg-primary);
    gap: 1rem;
}

.navigation-controls {
    display: flex;
    gap: 1rem;
}

/* Botões de Setas Redondos */
.nav-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: 2px solid var(--shadow);
    background: var(--bg-secondary);
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    /* Animação Suave dos Botões normais */
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); 
}

.nav-btn:hover:not(:disabled) {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
    transform: scale(1.1); /* Dá um zoom ao passar o rato */
    box-shadow: 0 4px 12px var(--shadow);
}

.nav-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none;
}

/* Botões de Status (1, 2, 3, 4) */
.status-controls {
    display: flex;
    gap: 0.8rem;
    flex-wrap: wrap;
    justify-content: center;
}

.status-controls .status-btn {
    padding: 0.8rem 1.5rem;
    border-radius: 10px;
    border: 2px solid var(--shadow);
    background: var(--bg-primary);
    color: var(--text-secondary);
    cursor: pointer;
    font-weight: 600;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    /* O Amortecedor Mágico (Efeito Mola) */
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1); 
}

.status-controls .status-btn:hover {
    transform: translateY(-4px); /* Pula para cima */
    box-shadow: 0 8px 20px var(--shadow);
}

.status-controls .status-btn:active {
    transform: scale(0.92) translateY(0); /* Esmaga ao clicar */
}

/* Cores Ativas dos Botões */
.status-btn.unread.active { background: var(--status-unread); color: white; border-color: var(--status-unread); }
.status-btn.reading.active { background: var(--status-reading); color: white; border-color: var(--status-reading); }
.status-btn.familiar.active { background: var(--status-familiar); color: white; border-color: var(--status-familiar); }
.status-btn.memorized.active { background: var(--status-memorized); color: white; border-color: var(--status-memorized); }

/* Responsividade */
@media (max-width: 900px) {
    .practice-header { padding: 1.2rem; }
    .practice-card { height: 280px; }
    .practice-card .greek-word { font-size: 2.2rem; }
    .practice-card .meaning { font-size: 1.3rem; }
}

@media (max-width: 600px) {
    .practice-controls { flex-direction: column; padding: 1.5rem 1rem; }
    .status-controls { order: -1; width: 100%; justify-content: space-between; gap: 0.5rem; }
    .status-btn { flex: 1; padding: 0.8rem 0; justify-content: center; min-width: auto; }
    .status-btn span:last-child { display: none; } /* Esconde o texto, mostra só o ícone */
    .navigation-controls { width: 100%; justify-content: space-between; }
}