:root {
    --primary: #2563eb;
    --primary-light: #3b82f6;
    --primary-dark: #1d4ed8;
    --success: #059669;
    --success-light: #10b981;
    --warning: #d97706;
    --danger: #dc2626;
    --bg-card: #ffffff;
    --bg-soft: #f1f5f9;
    --bg-page: #f8fafc;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --border: #e2e8f0;
    --border-light: #f1f5f9;
    --shadow-sm: 0 1px 2px rgba(0,0,0,.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,.07), 0 2px 4px -2px rgba(0,0,0,.05);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,.08), 0 4px 6px -4px rgba(0,0,0,.04);
    --radius: 8px;
    --radius-lg: 12px;
}

/* ── Filter Groups (label arriba + input abajo) ── */
.filter-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.filter-group .btn {
    align-self: flex-start;
}

/* ── Panels ── */
.panel-info {
    border-color: var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}
.panel-info > .panel-heading {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    border-bottom: none;
    padding: 14px 18px;
}
.panel-info > .panel-heading .panel-title {
    font-weight: 600;
    font-size: 15px;
    letter-spacing: .3px;
}
.panel-info > .panel-body {
    padding: 18px;
    background: var(--bg-card);
}
.panel-info > .panel-body .form-group {
    margin-bottom: 10px;
}
.panel-info > .panel-body .control-label {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: .5px;
    margin-bottom: 2px;
}
.panel-info > .panel-body .form-control {
    border: 1.5px solid var(--border);
    border-radius: 6px;
    box-shadow: none;
    transition: border-color .2s, box-shadow .2s;
    height: 36px;
    font-size: 13px;
}
.panel-info > .panel-body .form-control:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37,99,235,.1);
}
.panel-info > .panel-body .filter-group .input-group {
    width: 100%;
    display: flex;
}
.panel-info > .panel-body .filter-group .input-group .daterange-btn {
    width: 100%;
    justify-content: space-between;
}
.panel-info > .panel-body .input-group .btn {
    border-radius: 0 6px 6px 0;
    height: 36px;
    border: 1.5px solid var(--border);
    border-left: none;
    background: #fff;
    color: var(--text-secondary);
}
.panel-info > .panel-body .input-group .btn span {
    font-size: 12px;
}

.panel-success {
    border-color: var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}
.panel-success > .panel-heading {
    display: none;
}

/* ── Buttons ── */
.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border: none;
    border-radius: 6px;
    padding: 8px 20px;
    font-weight: 500;
    font-size: 13px;
    letter-spacing: .3px;
    box-shadow: var(--shadow-sm);
    transition: box-shadow .2s, transform .1s;
}
.btn-primary:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
}
.btn-primary:active {
    transform: translateY(0);
}

.btn-success {
    background: linear-gradient(135deg, var(--success), var(--success-light));
    border: none;
    border-radius: 6px;
    padding: 5px 14px;
    font-size: 12px;
    font-weight: 500;
    box-shadow: var(--shadow-sm);
    transition: box-shadow .2s, transform .1s;
}
.btn-success:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.btn-default {
    border-radius: 6px;
    border: 1.5px solid var(--border);
    font-size: 13px;
    padding: 6px 14px;
    color: var(--text-secondary);
    background: #fff;
    transition: border-color .2s, background .2s;
}
.btn-default:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: #f8fafc;
}

/* ── Modals ── */
.modal-content {
    border: none;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}
.modal-header {
    background: linear-gradient(135deg, #1e293b, #0f172a);
    color: #fff;
    border-bottom: 3px solid var(--success-light);
    padding: 16px 20px;
}
.modal-header .close {
    color: #fff;
    opacity: .7;
    text-shadow: none;
    transition: opacity .2s;
}
.modal-header .close:hover {
    opacity: 1;
}
.modal-header .modal-title {
    font-weight: 600;
    font-size: 16px;
    letter-spacing: .3px;
}
.modal-header .modal-title i {
    margin-right: 6px;
}
.modal-body {
    padding: 20px;
}
.modal-footer {
    border-top: 1px solid var(--border);
    padding: 14px 20px;
}
.modal-footer .btn {
    border-radius: 6px;
    padding: 7px 18px;
    font-size: 13px;
}

/* ── Well ── */
.well {
    border: none;
    border-radius: var(--radius);
    box-shadow: none;
    background: var(--bg-soft);
    padding: 14px 16px;
}
.well .row > div {
    font-size: 13px;
    color: var(--text-secondary);
}
.well .row > div b {
    color: var(--text-primary);
}

/* ── Tables ── */
.table-bordered > thead > tr > th {
    background: var(--bg-soft);
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .4px;
    border-color: var(--border);
}
.table-bordered > tbody > tr > td {
    border-color: var(--border-light);
    font-size: 13px;
}
.table-hover > tbody > tr:hover > td {
    background-color: #f8fafc;
}

/* ── Bootstrap Table ── */
.bootstrap-table .fixed-table-footer {
    border-top: 2px solid var(--border);
}
.bootstrap-table .fixed-table-footer td {
    font-weight: 600;
    color: var(--text-primary);
    background: var(--bg-soft);
    padding: 8px;
    font-size: 13px;
}

/* ── Alerts ── */
.alert-info {
    border: none;
    border-radius: var(--radius);
    background: rgba(37,99,235,.06);
    color: var(--primary-dark);
    padding: 10px 14px;
    font-size: 13px;
}
.alert-info i {
    margin-right: 4px;
}

/* ── DateRange Picker ── */
.daterange-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    font-size: 12px;
}
.daterange-btn i {
    font-size: 13px;
}
.daterange-btn span {
    font-size: 12px;
}

/* ── Responsive: 1 filter per line on mobile ── */
@media (max-width: 576px) {
    .panel-info > .panel-body {
        padding-left: 24px;
        padding-right: 24px;
    }
    .panel-info > .panel-body .filter-group {
        min-width: 100% !important;
        flex: 1 1 100% !important;
    }
    .panel-info > .panel-body .filter-group .input-group {
        width: 100%;
    }
    .panel-info > .panel-body .filter-group .btn-primary {
        width: 100%;
    }
}