/*
 * Shared header layout for sales and purchase vouchers (Sales Invoice / Order / Challan / Return,
 * Purchase Invoice / Return). Every form uses the same rows so labels and fields line up across pages:
 *
 *   row--2   Voucher No · Miti · Date            | reference documents (order, challan, bill …)
 *   row--2   Customer/Vendor + payment chip       | ledger summary card
 *            DueDays · Ref No · Ref Date
 *   row--3   Salesman | Sub Ledger | Department
 *   row--3   Currency | Rate (+ rate switches)    | form specific (invoice type, serial no)
 *            tabs
 */
.txn-header {
    --txn-label-width: 6.25rem;
    --txn-gap: .5rem;
    display: flex;
    flex-direction: column;
    gap: var(--txn-gap);
    min-width: 0;
}

.txn-row {
    display: grid;
    align-items: center;
    gap: var(--txn-gap) 1.25rem;
    min-width: 0;
}

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

.txn-row--3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.txn-row--4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.txn-row--stretch {
    align-items: stretch;
}

.txn-stack {
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    gap: var(--txn-gap);
    min-width: 0;
}

.txn-line {
    display: flex;
    align-items: center;
    gap: var(--txn-gap);
    min-width: 0;
    min-height: 2rem;
}

/* Fixed-width label: the first label of every line/column, so fields start on the same x. */
.txn-label {
    flex: 0 0 var(--txn-label-width);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Label inside a line (Miti, Date, Rate …). */
.txn-label--auto {
    flex: 0 0 auto;
    white-space: nowrap;
}

.txn-grow {
    flex: 1 1 0;
    min-width: 0;
}

.txn-auto {
    flex: 0 0 auto;
}

.txn-voucher {
    flex: 0 1 11rem;
    min-width: 7rem;
}

.txn-num {
    flex: 0 0 4.5rem;
    min-width: 0;
}

.txn-ref {
    flex: 0 1 7rem;
    min-width: 4.5rem;
}

.txn-push {
    margin-left: auto;
}

.txn-header .txn-line .form-control,
.txn-header .txn-line .form-select {
    min-width: 0;
}

.txn-header .txn-tabs .nav-tabs {
    margin-bottom: 0;
}

@container transaction-shell (max-width: 991.98px) {
    .txn-row--2,
    .txn-row--3 {
        grid-template-columns: minmax(0, 1fr);
    }

    .txn-row--4 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 991.98px) {
    .txn-row--2,
    .txn-row--3 {
        grid-template-columns: minmax(0, 1fr);
    }

    .txn-row--4 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 575.98px) {
    .txn-header {
        --txn-label-width: 5.25rem;
    }

    .txn-row--4 {
        grid-template-columns: minmax(0, 1fr);
    }

    .txn-line--wrap {
        flex-wrap: wrap;
    }

    .txn-line--wrap > .txn-grow {
        flex-basis: 8rem;
    }
}