/* --- Bộ lọc --- */
.search-filter {
    background: linear-gradient(135deg, #49acd9 0%, #0c4ca3 100%);
    border-radius: 15px;
    padding: 25px 20px;
    margin-bottom: 20px;
}
.filter-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: flex-end;
    width: 100%;
}
.filter-col {
    flex: 1 1 150px;
    min-width: 140px;
    max-width: 220px;
    display: flex;
    flex-direction: column;
}
.filter-col label {
    color: #fff;
    font-weight: 600;
    margin-bottom: 6px;
    font-size: 13px;
}
.filter-select, .filter-input {
    height: 38px;
    border: none;
    border-radius: 6px;
    padding: 0 10px;
    font-size: 12px;
    background: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: box-shadow 0.3s;
    width: 100%;
    box-sizing: border-box;
}
.filter-select:focus, .filter-input:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(255,255,255,0.3);
}
.filter-action {
    flex: 0 0 120px;
    display: flex;
    align-items: flex-end;
    justify-content: center;
}
.btn-search {
    background: linear-gradient(45deg, #ff416c, #ff4b2b);
    border: none;
    color: white;
    height: 40px;
    min-width: 120px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 16px;
    padding: 0 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
    box-shadow: 0 4px 15px rgba(255,65,108,0.2);
}
.btn-search:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255,65,108,0.4);
    color: #fff;
}
.btn-search-text {
    display: inline-block;
}
.bg-primary-1 {
    background-color: #0c4ca3 !important;
}

/* Modal responsive styles */
@media (max-width: 767.98px) {
    .modal-dialog {
        margin: 0.5rem;
        max-width: calc(100% - 1rem);
    }
    
    .modal-content {
        border-radius: 12px;
    }
    
    .modal-header {
        padding: 1rem 1rem 0.75rem;
        border-bottom: 1px solid rgba(255,255,255,0.2);
    }
    
    .modal-title {
        font-size: 1.1rem;
    }
    
    .modal-body {
        padding: 1rem;
        max-height: calc(100vh - 200px);
        overflow-y: auto;
    }
    
    .modal-footer {
        padding: 0.75rem 1rem;
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .modal-footer .btn {
        width: 100%;
        margin: 0;
    }
    
    /* Card trong modal */
    .modal-body .card {
        border: none;
        box-shadow: none;
    }
    
    .modal-body .card-header {
        padding: 0.75rem;
        font-size: 0.95rem;
    }
    
    .modal-body .card-body {
        padding: 0.75rem;
    }
    
    /* Grid responsive trong modal */
    .modal-body .row.g-3 {
        gap: 0.5rem;
    }
    
    .modal-body .col-md-6,
    .modal-body .col-md-12 {
        flex: 0 0 100%;
        max-width: 100%;
    }
    
    /* Text và badge trong modal mobile */
    .modal-body .d-flex.align-items-center {
        flex-wrap: wrap;
        gap: 0.25rem;
    }
    
    .modal-body strong {
        font-size: 0.9rem;
        min-width: fit-content;
    }
    
    .modal-body .badge {
        font-size: 0.75rem;
        padding: 0.25rem 0.5rem;
    }
    
    .modal-body .alert {
        padding: 0.75rem;
        font-size: 0.9rem;
        margin-bottom: 0.5rem;
    }
    
    /* Icon spacing */
    .modal-body .fas {
        width: 20px;
        text-align: center;
    }
}

/* Modal responsive cho tablet */
@media (min-width: 768px) and (max-width: 991.98px) {
    .modal-dialog {
        max-width: 90%;
        margin: 1rem auto;
    }
    
    .modal-body {
        padding: 1.25rem;
        max-height: calc(100vh - 150px);
        overflow-y: auto;
    }
    
    .modal-body .card-body {
        padding: 1rem;
    }
    
    .modal-body .row.g-3 {
        gap: 0.75rem;
    }
    
    .modal-body .d-flex.align-items-center {
        flex-wrap: wrap;
    }
    
    .modal-footer {
        flex-direction: row;
        justify-content: flex-end;
        gap: 0.5rem;
    }
    
    .modal-footer .btn {
        width: auto;
        min-width: 120px;
    }
}

/* Responsive bộ lọc */
@media (max-width: 767.98px) {
    .filter-row {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 10px;
    }
    .filter-col { min-width: 0; max-width: 100%; }
    .filter-col:nth-child(1) { grid-column: 1 / 2; grid-row: 1 / 2; }
    .filter-col:nth-child(2) { grid-column: 2 / 3; grid-row: 1 / 2; }
    .filter-col:nth-child(3) { grid-column: 1 / 2; grid-row: 2 / 3; }
    .filter-col:nth-child(4) { grid-column: 2 / 3; grid-row: 2 / 3; }
    .filter-col:nth-child(5) { grid-column: 1 / 2; grid-row: 3 / 4; }
    .filter-col:nth-child(6) { grid-column: 2 / 3; grid-row: 3 / 4; }
    .filter-action {
        grid-column: 1 / span 2;
        justify-content: center;
        margin-top: 4px;
    }
    .btn-search {
        width: 100%;
        font-size: 14px;
        min-width: unset;
        padding: 0 0;
    }
}
@media (min-width: 768px) and (max-width: 1199.98px) {
    .filter-row {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        grid-template-rows: repeat(2, auto);
        gap: 10px;
    }
    .filter-col:nth-child(1) { grid-column: 1 / 2; grid-row: 1 / 2; }
    .filter-col:nth-child(2) { grid-column: 2 / 3; grid-row: 1 / 2; }
    .filter-col:nth-child(3) { grid-column: 3 / 4; grid-row: 1 / 2; }
    .filter-col:nth-child(4) { grid-column: 4 / 5; grid-row: 1 / 2; }
    .filter-col:nth-child(5) { grid-column: 1 / 2; grid-row: 2 / 3; }
    .filter-col:nth-child(6) { grid-column: 2 / 3; grid-row: 2 / 3; }
    .filter-action { grid-column: 3 / 5; grid-row: 2 / 3; justify-content: flex-end; align-items: flex-end; }
    .btn-search { width: 100%; }
}
@media (min-width: 1200px) {
    .filter-row {
        display: flex;
        flex-wrap: nowrap;
        gap: 8px;
        align-items: flex-end;
    }
    .filter-col { min-width: 140px; max-width: 220px; }
    .filter-action { min-width: 120px; justify-content: center; align-items: flex-end; }
}

/* --- Card kết quả --- */
.exam-card-custom {
    border-radius: 24px;
    box-shadow: 0 2px 16px 0 rgba(76,124,252,0.09), 0 8px 24px 0 rgba(255,65,108,0.05);
    background: linear-gradient(135deg, #e3f0ff 60%, #dbeafe 100%);
    min-height: 350px;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    position: relative;
    overflow: visible;
    width: 100%;
}
.exam-card-header-custom {
    background: #0c4ca3 !important;
    border-top-left-radius: 24px !important;
    border-top-right-radius: 24px !important;
    font-size: 1.12rem;
    padding: 18px 12px;
    letter-spacing: 0.01em;
}
.exam-card-gradient {
    background: transparent;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    padding-bottom: 24px;
    min-height: 300px;
}
.exam-card-custom .d-flex.mt-auto {
    margin-top: auto !important;
}
.btn-dangky {
    background: #1657c0;
    color: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 10px 0 rgba(22,87,192,0.13);
    transition: 0.2s;
}
.btn-dangky:hover {
    background: #123d75;
    color: #fff;
}
.ribbon {
    position: absolute;
    top: 5px;
    left: -10px;
    background: #ff416c;
    color: #fff;
    padding: 4px 24px;
    font-size: 13px;
    font-weight: 600;
    transform: rotate(-17deg);
    border-radius: 6px;
    z-index: 2;
    box-shadow: 0 2px 6px 0 rgba(0,0,0,0.13);
}

/* Card content responsive */
@media (max-width: 1199.98px) {
    .exam-card-custom {
        min-height: 320px;
    }
    
    .exam-card-header-custom {
        font-size: 1.05rem;
        padding: 16px 10px;
    }
    
    .exam-card-custom .card-body {
        padding: 1rem 0.75rem;
        font-size: 0.9rem;
    }
    
    .exam-card-custom .small {
        font-size: 0.8rem !important;
    }
}

@media (max-width: 991.98px) {
    .exam-card-custom {
        min-height: 300px;
    }
    
    .exam-card-header-custom {
        font-size: 0.95rem;
        padding: 14px 8px;
    }
    
    .exam-card-custom .card-body {
        padding: 0.75rem;
        font-size: 0.85rem;
    }
    
    .exam-card-custom .small {
        font-size: 0.9rem !important;
    }
    
    .btn-dangky {
        font-size: 0.85rem;
        padding: 8px 16px;
    }
}

@media (max-width: 767.98px) {
    .exam-card-custom {
        min-height: 280px;
        padding-bottom: 10px;
    }
    
    .exam-card-header-custom {
        font-size: 0.9rem;
        padding: 12px 8px;
    }
    
    .exam-card-custom .card-body {
        padding: 0.65rem;
        font-size: 0.8rem;
    }
    
    .exam-card-custom .small {
        font-size: 0.8rem !important;
    }
    
    .btn-dangky {
        font-size: 0.8rem;
        padding: 6px 12px;
    }
    
    .ribbon {
        font-size: 11px;
        padding: 3px 18px;
        top: 3px;
        left: -8px;
    }
}

@media (max-width: 575.98px) {
    .exam-card-custom {
        min-height: 260px;
    }
    
    .exam-card-header-custom {
        font-size: 0.85rem;
        padding: 10px 6px;
    }
    
    .exam-card-custom .card-body {
        padding: 0.5rem;
        font-size: 0.75rem;
    }
    
    .exam-card-custom .small {
        font-size: 0.8rem !important;
    }
    
    .btn-dangky {
        font-size: 0.75rem;
        padding: 5px 10px;
    }
    
    .ribbon {
        font-size: 10px;
        padding: 2px 14px;
        top: 2px;
        left: -6px;
    }
}

@media (max-width: 479.98px) {
    .exam-card-custom {
        min-height: 240px;
    }
    
    .exam-card-header-custom {
        font-size: 0.8rem;
        padding: 8px 5px;
    }
    
    .exam-card-custom .card-body {
        padding: 0.4rem;
        font-size: 0.7rem;
    }
    
    .exam-card-custom .small {
        font-size: 0.8rem !important;
    }
    
    .btn-dangky {
        font-size: 0.7rem;
        padding: 4px 8px;
    }
    
    .ribbon {
        font-size: 9px;
        padding: 2px 12px;
    }
}

@media (max-width: 399.98px) {
    .exam-card-custom {
        min-height: 220px;
    }
    
    .exam-card-header-custom {
        font-size: 0.75rem;
        padding: 6px 4px;
    }
    
    .exam-card-custom .card-body {
        padding: 0.3rem;
        font-size: 0.65rem;
    }
    
    .exam-card-custom .small {
        font-size: 0.7rem !important;
    }
    
    .btn-dangky {
        font-size: 0.65rem;
        padding: 3px 6px;
    }
    
    .ribbon {
        font-size: 8px;
        padding: 1px 10px;
    }
}

/* Tùy chỉnh icon lớn hơn một chút cho dễ nhìn */
.exam-card-custom .fa {
    font-size: 1.1em;
    vertical-align: -0.1em;
}

/* Nhỏ gọn, vuông, bo nhẹ, spacing vừa phải */
.pagination .page-link {
    min-width: 32px;
    min-height: 32px;
    padding: 0;
    font-size: 1rem;
    border-radius: 6px !important;
}
.pagination .page-item { margin: 0 2px; }

.paginator-info {
    display: none !important;
}

p.small.text-muted {
    display: none !important;
}

.pagination .page-item .page-link {
    height: 42px;
    width: 42px;
    line-height: 40px;
}

/* Pagination responsive */
@media (max-width: 767.98px) {
    .pagination .page-link {
        min-width: 28px;
        min-height: 28px;
        font-size: 0.85rem;
        border-radius: 4px !important;
    }
    
    .pagination .page-item .page-link {
        height: 32px;
        width: 32px;
        line-height: 30px;
    }
    
    .pagination .page-item {
        margin: 0 1px;
    }
}

@media (max-width: 575.98px) {
    .pagination .page-link {
        min-width: 24px;
        min-height: 24px;
        font-size: 0.75rem;
    }
    
    .pagination .page-item .page-link {
        height: 28px;
        width: 28px;
        line-height: 26px;
    }
}

@media (max-width: 479.98px) {
    .pagination .page-link {
        min-width: 20px;
        min-height: 20px;
        font-size: 0.7rem;
    }
    
    .pagination .page-item .page-link {
        height: 24px;
        width: 24px;
        line-height: 22px;
    }
}

/* Container responsive */
@media (max-width: 767.98px) {
    .container {
        padding-left: 10px;
        padding-right: 10px;
    }
}

@media (max-width: 575.98px) {
    .container {
        padding-left: 5px;
        padding-right: 5px;
    }
}