.km-promotion-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 24px;
    margin: 30px 0;
}

.km-card {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    transition: all 0.3s;
}

.km-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.12);
}

.km-card-image {
    height: 180px;
    background-size: cover;
    background-position: center;
    position: relative;
}

.km-hot-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    background: #ff3b30;
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: bold;
}

.km-card-content {
    padding: 18px;
}

.km-airline {
    font-weight: 600;
    color: #d32f2f;
    margin-bottom: 8px;
}

.km-price {
    font-size: 28px;
    font-weight: 700;
    color: #1a73e8;
    margin: 8px 0;
}

.km-flight-info {
    color: #333;
    margin-bottom: 12px;
    line-height: 1.4;
}

.km-date {
    font-size: 14px;
    color: #555;
    margin-bottom: 16px;
}

.km-btn {
    display: inline-block;
    background: #d32f2f;
    color: white;
    padding: 10px 20px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
    width: 100%;
    text-align: center;
    transition: background 0.3s;
}

.km-btn:hover {
    background: #b71c1c;
}
.km-promotion-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px 0;
}

.km-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.km-tab-btn {
    padding: 12px 24px;
    border: 2px solid #ddd;
    background: white;
    border-radius: 50px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s;
}

.km-tab-btn.active {
    background: #d32f2f;
    color: white;
    border-color: #d32f2f;
}

.km-filter {
    margin-bottom: 25px;
}

.km-select {
    padding: 12px 16px;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 16px;
    min-width: 280px;
}

/* Responsive */
@media (max-width: 768px) {
    .km-promotion-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }
}

.km-load-more-btn {
    padding: 14px 32px;
    background: #1a73e8;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    cursor: pointer;
    font-weight: 500;
}
.km-load-more-btn:hover {
    background: #1557b0;
}
.km-load-more-btn:disabled {
    background: #999;
    cursor: not-allowed;
}

/* ================== LOADING SPINNER - THEO THƯƠNG HIỆU ================== */
.km-load-more-wrapper {
    text-align: center;
    margin: 40px 0 20px;
}

.km-load-more-btn {
    padding: 14px 32px;
    background: #d32f2f;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    cursor: pointer;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    min-width: 220px;
    justify-content: center;
    transition: all 0.3s;
}

.km-load-more-btn:hover {
    background: #b71c1c;
}

.km-load-more-btn:disabled {
    background: #999;
    cursor: not-allowed;
}

/* Spinner theo thương hiệu */
.spinner {
    width: 18px;
    height: 18px;
    border: 3px solid rgba(255,255,255,0.35);
    border-top: 3px solid #ffffff;
    border-radius: 50%;
    animation: spin 0.9s linear infinite;
    display: none;
}

.km-load-more-btn.loading .spinner {
    display: inline-block;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Hover effect cho button */
.km-load-more-btn.loading {
    background: #b71c1c;
}