/* --- BIỂU ĐỒ 3X3 --- */
.birth-chart-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 4px;
    width: 180px;
    height: 180px;
    background: #0f172a;
    border: 2px solid #0f172a;
    border-radius: 12px;
    overflow: hidden;
}

.chart-cell {
    background: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1.1rem;
    color: #cbd5e1;
}

.chart-cell.active { background: #fff1f2; color: #ef4444; }

/* --- DỰ BÁO 12 THÁNG (LUXURY STYLE) --- */
.month-grid-container {
    display: grid;
    grid-template-columns: repeat(2, 1fr); /* Mobile 2 cột */
    gap: 15px;
    margin-top: 25px;
}

@media (min-width: 640px) {
    .month-grid-container { grid-template-columns: repeat(3, 1fr); }
}

@media (min-width: 1024px) {
    .month-grid-container { grid-template-columns: repeat(6, 1fr); }
}

.month-card {
    background: #ffffff;
    border: 1px solid #f1f5f9;
    padding: 25px 15px;
    border-radius: 2rem; /* Bo góc cực đại cho sang */
    text-align: center;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.02);
    cursor: default;
}

.month-card:hover {
    transform: translateY(-8px);
    border-color: #ef4444;
    box-shadow: 0 20px 25px -5px rgba(239, 68, 68, 0.08);
}

/* Hiệu ứng cho tháng hiện tại */
.month-card.current {
    border: 2px solid #ef4444;
    background: linear-gradient(145deg, #fff5f5, #ffffff);
    box-shadow: 0 15px 30px rgba(239, 68, 68, 0.15);
    transform: scale(1.05);
    z-index: 10;
}

.month-card.current::after {
    content: "NAY";
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 8px;
    font-weight: 900;
    color: #ef4444;
    letter-spacing: 1px;
}

.month-label {
    display: block;
    font-size: 10px;
    font-weight: 800;
    text-transform: uppercase;
    color: #94a3b8;
    letter-spacing: 1px;
    margin-bottom: 10px;
}

.month-card.current .month-label {
    color: #ef4444;
}

.month-num {
    font-size: 2.2rem; /* Số to hẳn lên */
    font-weight: 900;
    color: #0f172a;
    line-height: 1;
    transition: 0.3s;
}

.month-card:hover .month-num {
    color: #ef4444;
}
.interpretation-content {
    mask-image: linear-gradient(to bottom, black 40%, transparent 100%);
    -webkit-mask-image: linear-gradient(to bottom, black 40%, transparent 100%);
}