/* ═══════════════════════════════════════════════════════════════════════════
 * payback-calc.css — Payback Period Calculator
 * Namespace: .pbc-* (payback calculator)
 * ═══════════════════════════════════════════════════════════════════════════ */

/* ── Widget Layout ──────────────────────────────────────────────────────── */
.pbc-wrap {
    font-family: inherit;
}

.pbc-heading {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--clr-text-primary);
    margin: 0 0 0.25rem;
    line-height: 1.3;
}

.pbc-subheading {
    font-size: 0.8125rem;
    color: var(--clr-text-muted);
    margin: 0 0 1.5rem;
}

/* ── Mode Toggle ────────────────────────────────────────────────────────── */
.pbc-mode-toggle {
    display: flex;
    background: var(--clr-bg-muted);
    border-radius: 10px;
    padding: 4px;
    gap: 4px;
    margin-bottom: 1.5rem;
    width: 100%;
}

.pbc-mode-btn {
    flex: 1;
    padding: 0.45rem 0.5rem;
    border: none;
    background: transparent;
    border-radius: 7px;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--clr-text-muted);
    cursor: pointer;
    transition: background 0.18s, color 0.18s, box-shadow 0.18s;
    white-space: nowrap;
    text-align: center;
}

.pbc-mode-btn.active {
    background: #fff;
    color: var(--clr-accent-dark);
    box-shadow: 0 1px 4px rgba(0,0,0,0.10);
}

/* ── Input Groups ───────────────────────────────────────────────────────── */
.pbc-section-label {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.07em;
    text-transform: uppercase;
    color: var(--clr-text-muted);
    margin: 0 0 0.75rem;
    padding-bottom: 0.4rem;
    border-bottom: 1px solid var(--clr-border-soft);
}

.pbc-fields {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem 1rem;
    margin-bottom: 1rem;
}

.pbc-fields.pbc-single-col {
    grid-template-columns: 1fr;
}

.pbc-field-group {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.pbc-field-group.pbc-span-2 {
    grid-column: span 2;
}

.pbc-label {
    font-size: 0.775rem;
    font-weight: 600;
    color: var(--clr-text-secondary);
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.pbc-label .pbc-hint {
    font-size: 0.7rem;
    font-weight: 400;
    color: var(--clr-text-muted);
}

.pbc-input-wrap {
    display: flex;
    align-items: center;
    border: 1.5px solid var(--clr-border);
    border-radius: 8px;
    background: var(--clr-bg);
    overflow: hidden;
    transition: border-color 0.15s, box-shadow 0.15s;
}

.pbc-input-wrap:focus-within {
    border-color: var(--clr-accent);
    box-shadow: var(--shadow-focus);
}

.pbc-prefix,
.pbc-suffix {
    padding: 0 0.55rem;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--clr-text-muted);
    background: var(--clr-bg-muted);
    height: 100%;
    display: flex;
    align-items: center;
    user-select: none;
    white-space: nowrap;
}

.pbc-prefix {
    border-right: 1.5px solid var(--clr-border);
}

.pbc-suffix {
    border-left: 1.5px solid var(--clr-border);
}

.pbc-input {
    flex: 1;
    border: none;
    outline: none;
    background: transparent;
    font-size: 0.875rem;
    color: var(--clr-text-primary);
    padding: 0.55rem 0.65rem;
    width: 0;
    min-width: 0;
    font-family: inherit;
}

.pbc-input::placeholder {
    color: var(--clr-text-muted);
}

.pbc-input-desc {
    font-size: 0.7rem;
    color: var(--clr-text-muted);
    line-height: 1.4;
}

/* ── Cash Flow Table ────────────────────────────────────────────────────── */
.pbc-cf-header {
    display: grid;
    grid-template-columns: 80px 1fr 1fr auto;
    gap: 0.5rem;
    align-items: center;
    margin-bottom: 0.4rem;
    padding: 0 0.15rem;
}

.pbc-cf-header-label {
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--clr-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.pbc-cf-rows {
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
    max-height: 280px;
    overflow-y: auto;
    padding-right: 2px;
    margin-bottom: 0.75rem;
}

.pbc-cf-rows::-webkit-scrollbar {
    width: 4px;
}

.pbc-cf-rows::-webkit-scrollbar-track {
    background: var(--clr-bg-muted);
    border-radius: 4px;
}

.pbc-cf-rows::-webkit-scrollbar-thumb {
    background: var(--clr-border);
    border-radius: 4px;
}

.pbc-cf-row {
    display: grid;
    grid-template-columns: 80px 1fr 1fr auto;
    gap: 0.5rem;
    align-items: center;
}

.pbc-cf-period {
    font-size: 0.775rem;
    font-weight: 600;
    color: var(--clr-text-muted);
    text-align: center;
    padding: 0.5rem 0.4rem;
    background: var(--clr-bg-muted);
    border-radius: 7px;
    border: 1.5px solid var(--clr-border-soft);
}

.pbc-cf-del {
    width: 30px;
    height: 30px;
    border: none;
    background: transparent;
    cursor: pointer;
    border-radius: 6px;
    color: var(--clr-text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.15s, color 0.15s;
    flex-shrink: 0;
}

.pbc-cf-del:hover {
    background: #fee2e2;
    color: #dc2626;
}

.pbc-cf-actions {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.pbc-btn-add-row {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.45rem 0.9rem;
    font-size: 0.8rem;
    font-weight: 600;
    border-radius: 8px;
    border: 1.5px solid var(--clr-accent);
    color: var(--clr-accent-dark);
    background: var(--clr-accent-light);
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s;
}

.pbc-btn-add-row:hover {
    background: var(--clr-accent-hover);
}

/* ── Action Buttons ─────────────────────────────────────────────────────── */
.pbc-actions {
    display: flex;
    gap: 0.65rem;
    margin-top: 1.25rem;
}

.pbc-btn-calc {
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    padding: 0.7rem 1rem;
    font-size: 0.9rem;
    font-weight: 700;
    border-radius: 10px;
    border: none;
    background: var(--clr-accent);
    color: #fff;
    cursor: pointer;
    transition: background 0.15s, transform 0.1s, box-shadow 0.15s;
    box-shadow: 0 2px 8px rgba(14,165,233,0.25);
}

.pbc-btn-calc:hover {
    background: var(--clr-accent-dark);
    box-shadow: 0 4px 14px rgba(14,165,233,0.3);
}

.pbc-btn-calc:active {
    transform: scale(0.98);
}

.pbc-btn-clear {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    padding: 0.7rem 1rem;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 10px;
    border: 1.5px solid var(--clr-border);
    background: var(--clr-bg);
    color: var(--clr-text-secondary);
    cursor: pointer;
    transition: border-color 0.15s, background 0.15s;
}

.pbc-btn-clear:hover {
    border-color: var(--clr-text-muted);
    background: var(--clr-bg-muted);
}

/* ── Error ──────────────────────────────────────────────────────────────── */
.pbc-error {
    background: #fef2f2;
    border: 1.5px solid #fca5a5;
    border-radius: 9px;
    padding: 0.6rem 0.875rem;
    font-size: 0.8rem;
    color: #b91c1c;
    margin-top: 1rem;
    display: none;
    align-items: flex-start;
    gap: 0.45rem;
}

.pbc-error.visible {
    display: flex;
}

/* ── Divider ────────────────────────────────────────────────────────────── */
.pbc-divider {
    border: none;
    border-top: 1.5px solid var(--clr-border-soft);
    margin: 1.25rem 0;
}

/* ── Results ────────────────────────────────────────────────────────────── */
.pbc-results {
    display: none;
    flex-direction: column;
    gap: 1rem;
    margin-top: 1.25rem;
    animation: pbcFadeIn 0.3s ease;
}

.pbc-results.visible {
    display: flex;
}

@keyframes pbcFadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}

.pbc-result-primary {
    background: linear-gradient(135deg, var(--clr-accent) 0%, var(--clr-accent-dark) 100%);
    border-radius: 12px;
    padding: 1.1rem 1.25rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    color: #fff;
}

.pbc-result-primary-label {
    font-size: 0.8rem;
    font-weight: 600;
    opacity: 0.88;
    margin-bottom: 0.2rem;
}

.pbc-result-primary-value {
    font-size: 1.75rem;
    font-weight: 800;
    line-height: 1;
    letter-spacing: -0.02em;
}

.pbc-result-primary-sub {
    font-size: 0.75rem;
    opacity: 0.78;
    margin-top: 0.3rem;
}

.pbc-result-primary-icon {
    width: 48px;
    height: 48px;
    background: rgba(255,255,255,0.18);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.pbc-result-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.65rem;
}

.pbc-result-card {
    background: var(--clr-bg-soft);
    border: 1.5px solid var(--clr-border);
    border-radius: 10px;
    padding: 0.75rem 0.875rem;
}

.pbc-result-card-label {
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--clr-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.3rem;
}

.pbc-result-card-value {
    font-size: 1.05rem;
    font-weight: 800;
    color: var(--clr-text-primary);
    line-height: 1.2;
}

.pbc-result-card-value.pbc-green {
    color: var(--clr-green);
}

.pbc-result-card-value.pbc-amber {
    color: #d97706;
}

.pbc-result-card-value.pbc-red {
    color: #dc2626;
}

.pbc-result-card-sub {
    font-size: 0.7rem;
    color: var(--clr-text-muted);
    margin-top: 0.2rem;
}

/* ── Verdict Badge ──────────────────────────────────────────────────────── */
.pbc-verdict {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    background: var(--clr-warning-bg);
    border: 1.5px solid var(--clr-warning-brd);
    border-radius: 10px;
    padding: 0.75rem 0.875rem;
    font-size: 0.82rem;
    color: var(--clr-warning-text);
    font-weight: 600;
    line-height: 1.5;
}

.pbc-verdict.pbc-verdict-good {
    background: #f0fdf4;
    border-color: #86efac;
    color: #166534;
}

.pbc-verdict.pbc-verdict-bad {
    background: #fef2f2;
    border-color: #fca5a5;
    color: #991b1b;
}

.pbc-verdict-icon {
    font-size: 1.25rem;
    flex-shrink: 0;
}

/* ── Progress Bar ───────────────────────────────────────────────────────── */
.pbc-progress-wrap {
    margin-top: 0.25rem;
}

.pbc-progress-label-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.72rem;
    color: var(--clr-text-muted);
    margin-bottom: 0.35rem;
}

.pbc-progress-bar-bg {
    height: 8px;
    background: var(--clr-bg-muted);
    border-radius: 99px;
    overflow: hidden;
}

.pbc-progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--clr-accent), var(--clr-accent-dark));
    border-radius: 99px;
    transition: width 0.6s cubic-bezier(0.4,0,0.2,1);
    width: 0%;
}

/* ── Amortisation Table ─────────────────────────────────────────────────── */
.pbc-table-wrap {
    overflow-x: auto;
    border-radius: 10px;
    border: 1.5px solid var(--clr-border);
}

.pbc-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.78rem;
}

.pbc-table thead th {
    background: var(--clr-bg-muted);
    color: var(--clr-text-muted);
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.55rem 0.75rem;
    text-align: right;
    border-bottom: 1.5px solid var(--clr-border);
    white-space: nowrap;
}

.pbc-table thead th:first-child {
    text-align: left;
}

.pbc-table tbody tr {
    border-bottom: 1px solid var(--clr-border-soft);
    transition: background 0.12s;
}

.pbc-table tbody tr:last-child {
    border-bottom: none;
}

.pbc-table tbody tr:hover {
    background: var(--clr-bg-soft);
}

.pbc-table tbody td {
    padding: 0.5rem 0.75rem;
    color: var(--clr-text-secondary);
    text-align: right;
    white-space: nowrap;
}

.pbc-table tbody td:first-child {
    text-align: left;
    font-weight: 600;
    color: var(--clr-text-primary);
}

.pbc-table .pbc-row-payback {
    background: var(--clr-accent-light) !important;
    font-weight: 700;
}

.pbc-table .pbc-row-payback td {
    color: var(--clr-accent-dark);
    font-weight: 700;
}

.pbc-table .pbc-positive { color: var(--clr-green); }
.pbc-table .pbc-negative { color: #dc2626; }

/* ── Table Section Heading ──────────────────────────────────────────────── */
.pbc-results-section-title {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--clr-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin: 0 0 0.5rem;
}

/* ── Discounted mode note ───────────────────────────────────────────────── */
.pbc-disc-note {
    font-size: 0.75rem;
    color: var(--clr-text-muted);
    background: var(--clr-bg-muted);
    border-radius: 7px;
    padding: 0.5rem 0.7rem;
    border-left: 3px solid var(--clr-teal);
}

/* ── Responsive ─────────────────────────────────────────────────────────── */
@media (max-width: 600px) {
    .pbc-fields {
        grid-template-columns: 1fr;
    }

    .pbc-field-group.pbc-span-2 {
        grid-column: span 1;
    }

    .pbc-result-grid {
        grid-template-columns: 1fr 1fr;
    }

    .pbc-result-primary-value {
        font-size: 1.45rem;
    }

    .pbc-cf-header,
    .pbc-cf-row {
        grid-template-columns: 65px 1fr 1fr auto;
        gap: 0.35rem;
    }

    .pbc-mode-btn {
        font-size: 0.72rem;
        padding: 0.4rem 0.3rem;
    }
}

@media (max-width: 400px) {
    .pbc-result-grid {
        grid-template-columns: 1fr;
    }

    .pbc-actions {
        flex-direction: column;
    }
}