/* ===== 成就系统样式 ===== */
.achievements-container {
    padding: 0.5rem 0;
}

.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 0.8rem;
}

.achievement-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem;
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.achievement-card:active {
    transform: scale(0.97);
}

.achievement-card.unlocked {
    border-color: var(--warning);
    background: linear-gradient(135deg, var(--bg-card), rgba(253, 203, 110, 0.08));
}

.achievement-card.locked {
    opacity: 0.6;
    filter: grayscale(0.5);
}

.achievement-badge {
    font-size: 2.2rem;
    margin-bottom: 0.5rem;
    display: block;
}

.achievement-card.locked .achievement-badge {
    filter: grayscale(1);
}

.achievement-title {
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 0.3rem;
}

.achievement-desc {
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.achievement-reward {
    display: inline-flex;
    align-items: center;
    gap: 0.2rem;
    background: var(--bg);
    padding: 0.2rem 0.6rem;
    border-radius: 12px;
    font-size: 0.65rem;
    color: var(--warning);
}

.achievement-progress {
    margin-top: 0.6rem;
}

.achievement-progress-bar {
    width: 100%;
    height: 4px;
    background: var(--bg);
    border-radius: 2px;
    overflow: hidden;
}

.achievement-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    border-radius: 2px;
    transition: width 0.8s ease;
}

.achievement-progress-text {
    font-size: 0.6rem;
    color: var(--text-muted);
    margin-top: 0.2rem;
}

.achievement-card.unlocked::after {
    content: '✓';
    position: absolute;
    top: 8px;
    right: 8px;
    width: 20px;
    height: 20px;
    background: var(--success);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.6rem;
    color: white;
}

.achievement-category {
    position: absolute;
    top: 8px;
    left: 8px;
    font-size: 0.55rem;
    padding: 0.15rem 0.4rem;
    border-radius: 8px;
    background: var(--bg);
    color: var(--text-muted);
    border: 1px solid var(--border);
}

/* ===== 桌面端 ===== */
@media (min-width: 769px) {
    .achievements-grid {
        grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
        gap: 1.2rem;
    }

    .achievement-card {
        padding: 1.5rem;
    }

    .achievement-card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow);
    }

    .achievement-badge {
        font-size: 3rem;
    }
}