.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    white-space: nowrap;
    border-radius: var(--radius);
    font-size: 0.875rem;
    font-weight: 500;
    transition: color 0.15s ease, background-color 0.15s ease, border-color 0.15s ease;
    outline: none;
    cursor: pointer;
    border: 1px solid transparent;
}

.btn:focus-visible {
    outline: 2px solid hsl(var(--ring));
    outline-offset: 2px;
}

.btn:disabled {
    pointer-events: none;
    opacity: 0.5;
}

.btn-default {
    background-color: hsl(var(--primary));
    color: hsl(var(--primary-foreground));
}

.btn-default:hover {
    opacity: 0.9;
}

.btn-destructive {
    background-color: hsl(var(--destructive));
    color: hsl(var(--destructive-foreground));
}

.btn-destructive:hover {
    opacity: 0.9;
}

.btn-outline {
    border: 1px solid hsl(var(--input));
    background-color: hsl(var(--background));
    color: hsl(var(--foreground));
}

.btn-outline:hover {
    background-color: hsl(var(--accent));
    color: hsl(var(--accent-foreground));
}

.btn-secondary {
    background-color: hsl(var(--secondary));
    color: hsl(var(--secondary-foreground));
}

.btn-secondary:hover {
    opacity: 0.85;
}

.btn-ghost {
    background-color: transparent;
    color: hsl(var(--foreground));
}

.btn-ghost:hover {
    background-color: hsl(var(--accent));
    color: hsl(var(--accent-foreground));
}

.btn-link {
    background-color: transparent;
    color: hsl(var(--primary));
    text-underline-offset: 4px;
}

.btn-link:hover {
    text-decoration: underline;
}

.btn-sm {
    height: 2.25rem;
    padding: 0 0.75rem;
    font-size: 0.8125rem;
}

.btn {
    height: 2.5rem;
    padding: 0 1rem;
    font-size: 0.875rem;
}

.btn-lg {
    height: 2.75rem;
    padding: 0 2rem;
    font-size: 0.9375rem;
}

.btn-icon {
    height: 2.5rem;
    width: 2.5rem;
    padding: 0;
}

.form-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: hsl(var(--foreground));
    line-height: 1;
    margin-bottom: 0.375rem;
    display: block;
}

.form-input,
.form-select,
.form-textarea {
    display: flex;
    width: 100%;
    border-radius: var(--radius);
    border: 1px solid hsl(var(--input));
    background-color: hsl(var(--background));
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    color: hsl(var(--foreground));
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-input {
    height: 2.5rem;
}

.form-textarea {
    min-height: 6rem;
    resize: vertical;
}

.form-select {
    height: 2.5rem;
    appearance: none;
    background-image: linear-gradient(45deg, transparent 50%, hsl(var(--muted-foreground)) 50%),
        linear-gradient(135deg, hsl(var(--muted-foreground)) 50%, transparent 50%),
        linear-gradient(to right, transparent, transparent);
    background-position: calc(100% - 1rem) calc(1rem + 2px),
        calc(100% - 0.75rem) calc(1rem + 2px),
        100% 0;
    background-size: 5px 5px, 5px 5px, 2.5rem 2.5rem;
    background-repeat: no-repeat;
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: hsl(var(--muted-foreground));
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: hsl(var(--ring));
    box-shadow: 0 0 0 2px hsl(var(--ring) / 0.2);
}

.form-input:disabled,
.form-select:disabled,
.form-textarea:disabled {
    cursor: not-allowed;
    opacity: 0.5;
}

.form-input.error,
.form-select.error,
.form-textarea.error {
    border-color: hsl(var(--destructive));
}

.form-help {
    font-size: 0.75rem;
    color: hsl(var(--muted-foreground));
}

.form-error {
    font-size: 0.75rem;
    color: hsl(var(--destructive));
}

.form-check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: hsl(var(--foreground));
}

.form-check input {
    accent-color: hsl(var(--primary));
}

.card {
    border-radius: calc(var(--radius) + 2px);
    border: 1px solid hsl(var(--border));
    background-color: hsl(var(--card));
    color: hsl(var(--card-foreground));
    box-shadow: 0 1px 1px rgba(0, 0, 0, 0.03), 0 8px 24px rgba(15, 23, 42, 0.08);
}

.card-header {
    padding: 1.25rem 1.5rem 0.5rem;
    border-bottom: 1px solid hsl(var(--border));
}

.card-content {
    padding: 1.25rem 1.5rem;
}

.card-footer {
    padding: 1rem 1.5rem 1.25rem;
    border-top: 1px solid hsl(var(--border));
}

.stat-card {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.overflow-x-auto {
    width: 100%;
    max-width: 100%;
    overflow-x: auto;
    overscroll-behavior-x: contain;
    -webkit-overflow-scrolling: touch;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.data-table th,
.data-table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid hsl(var(--border));
    text-align: left;
}

.data-table th {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: hsl(var(--muted-foreground));
}

.data-table tbody tr:hover {
    background-color: hsl(var(--accent));
}

.badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    padding: 0.25rem 0.6rem;
    font-size: 0.75rem;
    font-weight: 600;
    line-height: 1;
    border: 1px solid transparent;
}

.badge-default {
    background-color: hsl(var(--primary));
    color: hsl(var(--primary-foreground));
}

.badge-secondary {
    background-color: hsl(var(--secondary));
    color: hsl(var(--secondary-foreground));
}

.badge-success {
    background-color: hsl(142 71% 45%);
    color: white;
}

.badge-destructive {
    background-color: hsl(var(--destructive));
    color: hsl(var(--destructive-foreground));
}

.badge-outline {
    background-color: transparent;
    border-color: hsl(var(--border));
    color: hsl(var(--foreground));
}

.alert {
    border-radius: var(--radius);
    padding: 0.75rem 1rem;
    border: 1px solid hsl(var(--border));
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
    font-size: 0.875rem;
}

.alert-success {
    background-color: hsl(142 76% 95%);
    border-color: hsl(142 71% 45% / 0.3);
    color: hsl(142 76% 20%);
}

.alert-error {
    background-color: hsl(0 86% 96%);
    border-color: hsl(var(--destructive) / 0.3);
    color: hsl(0 73% 30%);
}

.alert-warning {
    background-color: hsl(48 100% 95%);
    border-color: hsl(48 96% 53% / 0.4);
    color: hsl(24 90% 25%);
}

.link-muted {
    color: hsl(var(--muted-foreground));
    font-size: 0.875rem;
}

.link-muted:hover {
    color: hsl(var(--foreground));
}

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.45);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 50;
}

.modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: min(92vw, 420px);
    border-radius: calc(var(--radius) + 2px);
    background: hsl(var(--card));
    color: hsl(var(--card-foreground));
    border: 1px solid hsl(var(--border));
    box-shadow: 0 20px 40px rgba(15, 23, 42, 0.25);
    z-index: 60;
}

.modal-header {
    padding: 1.25rem 1.5rem 0;
    font-weight: 600;
}

.modal-body {
    padding: 1rem 1.5rem;
    color: hsl(var(--muted-foreground));
}

.modal-footer {
    padding: 0 1.5rem 1.5rem;
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
}

.dataTables_wrapper {
    margin-top: 1rem;
    min-width: 0;
}

.dataTables_wrapper .dataTables_length,
.dataTables_wrapper .dataTables_filter {
    margin-bottom: 0.75rem;
}

.dataTables_wrapper .dataTables_filter label,
.dataTables_wrapper .dataTables_length label {
    font-size: 0.875rem;
    color: hsl(var(--muted-foreground));
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.dataTables_wrapper .dataTables_filter input {
    height: 2.25rem;
    border-radius: var(--radius);
    border: 1px solid hsl(var(--input));
    padding: 0.4rem 0.6rem;
    font-size: 0.875rem;
    color: hsl(var(--foreground));
}

.dataTables_wrapper .dataTables_length select {
    height: 2.25rem;
    border-radius: var(--radius);
    border: 1px solid hsl(var(--input));
    padding: 0.35rem 0.6rem;
    font-size: 0.875rem;
    color: hsl(var(--foreground));
    background: hsl(var(--background));
}

.dataTables_wrapper .dataTables_info {
    font-size: 0.8125rem;
    color: hsl(var(--muted-foreground));
    padding-top: 0.5rem;
}

.dataTables_wrapper .dataTables_paginate {
    padding-top: 0.5rem;
}

.dataTables_wrapper .dataTables_paginate .paginate_button {
    border: 1px solid hsl(var(--input)) !important;
    background: hsl(var(--background)) !important;
    color: hsl(var(--foreground)) !important;
    border-radius: calc(var(--radius) - 2px);
    margin: 0 0.15rem;
    padding: 0.35rem 0.6rem;
    font-size: 0.8125rem;
}

.dataTables_wrapper .dataTables_paginate .paginate_button.current {
    background: hsl(var(--primary)) !important;
    color: hsl(var(--primary-foreground)) !important;
    border-color: hsl(var(--primary)) !important;
}

.dataTables_wrapper .dataTables_paginate .paginate_button.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

table.dataTable.no-footer {
    border-bottom: 1px solid hsl(var(--border));
}

/* ============================================================================
   BULK ENROLLMENT + RESET PASSWORD MODALS
   ============================================================================ */

.modal-lg {
    width: min(92vw, 720px);
}

.modal-title {
    font-size: 1.05rem;
    font-weight: 600;
    margin: 0;
}

.modal-header-with-close {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
}

.file-drop-zone {
    border: 2px dashed hsl(var(--border));
    border-radius: var(--radius);
    padding: 2rem 1.25rem;
    text-align: center;
    cursor: pointer;
    background-color: hsl(var(--muted) / 0.3);
    transition: border-color 0.15s ease, background-color 0.15s ease;
}

.file-drop-zone:hover {
    border-color: hsl(var(--primary));
    background-color: hsl(var(--primary) / 0.05);
}

.file-drop-zone-dragover {
    border-color: hsl(var(--primary));
    background-color: hsl(var(--primary) / 0.1);
    border-style: solid;
}

.file-drop-zone-content {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.selected-file-info {
    border: 1px solid hsl(var(--border));
    border-radius: var(--radius);
    padding: 0.875rem 1rem;
    background-color: hsl(var(--muted) / 0.25);
}

.progress-bar-container {
    width: 100%;
    height: 0.5rem;
    background-color: hsl(var(--muted));
    border-radius: 999px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    width: 0;
    background-color: hsl(var(--primary));
    border-radius: 999px;
    transition: width 0.3s ease;
}

.progress-stats {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0.75rem;
    text-align: center;
}

.progress-stat {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.progress-stat-value {
    font-size: 1.25rem;
    font-weight: 700;
    line-height: 1;
}

.progress-stat-label {
    font-size: 0.75rem;
    color: hsl(var(--muted-foreground));
}

.results-summary {
    text-align: center;
}

.results-summary-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 3rem;
    height: 3rem;
    border-radius: 999px;
    font-weight: 700;
}

.results-summary-icon-success {
    background-color: hsl(var(--success) / 0.12);
    color: hsl(var(--success));
}

.results-summary-icon-warning {
    background-color: hsl(var(--warning) / 0.12);
    color: hsl(var(--warning));
}

.results-summary-icon-error {
    background-color: hsl(var(--destructive) / 0.12);
    color: hsl(var(--destructive));
}

.results-stats {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.75rem;
    margin-top: 1rem;
}

.results-stat {
    text-align: center;
    padding: 0.75rem;
    border-radius: var(--radius);
}

.results-stat-success {
    background-color: hsl(var(--success) / 0.1);
}

.results-stat-warning {
    background-color: hsl(var(--warning) / 0.1);
}

.results-stat-error {
    background-color: hsl(var(--destructive) / 0.1);
}

.results-stat-value {
    font-size: 1.4rem;
    font-weight: 700;
    line-height: 1;
}

.results-stat-label {
    display: block;
    margin-top: 0.4rem;
    font-size: 0.72rem;
    color: hsl(var(--muted-foreground));
}

.row-details-container {
    margin-top: 0.5rem;
    border: 1px solid hsl(var(--border));
    border-radius: var(--radius);
    overflow: hidden;
}

.row-details-table-wrapper {
    max-height: 300px;
    overflow: auto;
    -webkit-overflow-scrolling: touch;
}

.row-details-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.75rem;
}

.row-details-table th,
.row-details-table td {
    padding: 0.5rem 0.625rem;
    text-align: left;
    border-bottom: 1px solid hsl(var(--border));
}

.row-details-table th {
    background-color: hsl(var(--muted) / 0.6);
    font-weight: 600;
    position: sticky;
    top: 0;
}

.row-details-table tbody tr:last-child td {
    border-bottom: none;
}

.row-status-success {
    background-color: hsl(var(--success) / 0.05);
}

.row-status-warning {
    background-color: hsl(var(--warning) / 0.05);
}

.row-status-error {
    background-color: hsl(var(--destructive) / 0.05);
}

.badge-warning {
    background-color: hsl(var(--warning) / 0.15);
    color: hsl(30 85% 25%);
}

.toast-container {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 120;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.toast {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.65rem 0.85rem;
    border-radius: var(--radius);
    background-color: hsl(var(--background));
    border: 1px solid hsl(var(--border));
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.18);
    max-width: 420px;
    animation: toast-slide-in 0.25s ease;
}

.toast-success {
    border-left: 4px solid hsl(var(--success));
}

.toast-error {
    border-left: 4px solid hsl(var(--destructive));
}

.toast-close {
    margin-left: auto;
    background: transparent;
    border: 0;
    cursor: pointer;
    color: hsl(var(--muted-foreground));
    font-size: 1rem;
    line-height: 1;
}

.toast-close:hover {
    color: hsl(var(--foreground));
}

@keyframes toast-slide-in {
    from {
        transform: translateX(15px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.text-success {
    color: hsl(var(--success));
}

.text-warning {
    color: hsl(var(--warning));
}

@media (max-width: 767px) {
    .card-header {
        padding: 1rem 1rem 0.5rem;
    }

    .card-content {
        padding: 1rem;
    }

    .card-footer {
        padding: 0.875rem 1rem 1rem;
    }

    .alert {
        flex-direction: column;
        gap: 0.65rem;
    }

    .modal {
        width: min(96vw, 420px);
        max-height: 90vh;
        overflow-y: auto;
    }

    .modal-lg {
        width: min(96vw, 720px);
    }

    .modal-footer {
        flex-wrap: wrap;
        justify-content: stretch;
    }

    .progress-stats {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .results-stats {
        grid-template-columns: 1fr;
    }

    .toast-container {
        top: 0.75rem;
        right: 0.75rem;
        left: 0.75rem;
    }

    .toast {
        width: 100%;
        max-width: none;
    }

    .overflow-x-auto {
        overflow-y: auto;
        max-height: var(--table-mobile-max-height);
        overscroll-behavior: contain;
    }

    .overflow-x-auto.datatable-host {
        overflow: visible;
        max-height: none;
    }

    .overflow-x-auto.datatable-host .dataTables_scroll {
        width: 100%;
    }

    .overflow-x-auto.datatable-host .dataTables_scrollHead,
    .overflow-x-auto.datatable-host .dataTables_scrollBody {
        overflow-x: auto !important;
        -webkit-overflow-scrolling: touch;
    }

    .overflow-x-auto.datatable-host .dataTables_scrollBody {
        max-height: var(--table-mobile-max-height) !important;
        overflow-y: auto !important;
    }

    .overflow-x-auto .data-table,
    .overflow-x-auto table.dataTable {
        min-width: var(--table-mobile-min-width);
    }

    .row-details-table {
        min-width: var(--table-mobile-min-width);
    }

    .data-table th,
    .data-table td {
        white-space: nowrap;
    }

    .dataTables_wrapper .dataTables_length,
    .dataTables_wrapper .dataTables_filter,
    .dataTables_wrapper .dataTables_info,
    .dataTables_wrapper .dataTables_paginate {
        float: none !important;
        text-align: left !important;
        width: 100%;
    }

    .dataTables_wrapper .dataTables_filter label,
    .dataTables_wrapper .dataTables_length label {
        width: 100%;
        flex-wrap: wrap;
        gap: 0.4rem;
    }

    .dataTables_wrapper .dataTables_filter input,
    .dataTables_wrapper .dataTables_length select {
        width: 100%;
        min-width: 0;
    }

    .dataTables_wrapper .dataTables_paginate .paginate_button {
        margin: 0.12rem;
    }
}