/* ================================================================
   Dubai Real Estate Investment Calculator – Premium Dark Theme
   ================================================================ */

/* ── TOKENS ─────────────────────────────────────────────────────── */
:root {
    --bg-base: #18130c;
    --bg-surface: #1e1810;
    --bg-card: #261f14;
    --bg-card2: #2e2618;
    --bg-hover: #362d1d;
    --border: #423624;
    --border-light: #4e412b;

    --gold: #ad8152;
    --gold-light: #c29566;
    --gold-dim: #9a7147;
    --green: #3dca7c;
    --green-dim: #256843;
    --red: #e05656;
    --red-dim: #7a2a2a;
    --blue: #4a90d9;
    --blue-dim: #2a527a;
    --purple: #9b6dff;

    --text-primary: #e8eaf0;
    --text-second: #8fa3c0;
    --text-dim: #4d6080;

    --radius-sm: 6px;
    --radius: 10px;
    --radius-lg: 16px;

    --shadow: 0 4px 24px rgba(0, 0, 0, .45);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, .3);

    --transition: all .18s ease;
}

/* ── RESET ───────────────────────────────────────────────────────── */
.calculator-container *,
.calculator-container *::before,
.calculator-container *::after,
.modal-overlay *,
.modal-overlay *::before,
.modal-overlay *::after {
    box-sizing: border-box;
}

.calculator-container,
.modal-overlay {
    font-family: 'Jost', sans-serif;
    color: var(--text-primary);
    background: var(--bg-base);
}

/* ── SCROLLBAR ───────────────────────────────────────────────────── */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg-base);
}

::-webkit-scrollbar-thumb {
    background: var(--border-light);
    border-radius: 3px;
}

/* ── TOP NAV ─────────────────────────────────────────────────────── */
.calculator-container {
    padding-top: 50px;
    /* Use padding instead of margin to prevent exposing body background */
}

.calculator-container .topnav {
    position: relative;
    top: 0;
    left: 0;
    right: 0;
    z-index: 10;
    height: 56px;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 0 20px;
    box-shadow: var(--shadow);
}

.calculator-container .topnav .logo {
    font-size: 1.1rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--gold), var(--gold-light));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    white-space: nowrap;
    margin-right: 4px;
}

.calculator-container .topnav .logo span {
    font-size: 1.3rem;
}

#scenario-select {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    color: var(--text-primary);
    padding: 6px 10px;
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: .9rem;
    cursor: pointer;
    max-width: 200px;
    flex: 1;
}

#scenario-select:focus {
    outline: none;
    border-color: var(--gold);
}

.nav-btn {
    display: flex;
    align-items: center;
    gap: 5px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-second);
    padding: 6px 11px;
    border-radius: var(--radius-sm);
    font-size: .82rem;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.nav-btn:hover {
    border-color: var(--gold);
    color: var(--gold);
}

.nav-btn.primary {
    border-color: var(--gold-dim);
    color: var(--gold);
}

.nav-btn.primary:hover {
    background: var(--gold-dim);
    color: #fff;
}

.nav-btn.danger:hover {
    border-color: var(--red);
    color: var(--red);
}

.topnav-right {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 8px;
}

.scenario-name-input {
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--border-light);
    color: var(--text-primary);
    font-size: .9rem;
    font-family: inherit;
    padding: 2px 4px;
    width: 160px;
}

.scenario-name-input:focus {
    outline: none;
    border-color: var(--gold);
}

/* ── LAYOUT ──────────────────────────────────────────────────────── */
.calculator-container .app-layout {
    display: flex;
    min-height: calc(100vh - 120px);
}

/* ── SIDEBAR ─────────────────────────────────────────────────────── */
.calculator-container .sidebar {
    width: 280px;
    flex-shrink: 0;
    background: var(--bg-surface);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
}

.tab-nav {
    padding: 12px 0;
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.tab-nav.horizontal {
    flex-direction: row;
    border-bottom: 1px solid var(--border);
    padding: 0 0 16px 0;
    margin-bottom: 24px;
    gap: 10px;
}

.tab-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    font-size: .88rem;
    font-weight: 500;
    cursor: pointer;
    color: var(--text-second);
    background: transparent;
    border: none;
    width: 100%;
    text-align: left;
    transition: var(--transition);
}

.tab-nav.horizontal .tab-btn {
    width: auto;
    border-left: none;
    border-bottom: 2px solid transparent;
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
    padding: 12px 20px;
    gap: 8px;
}

.tab-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.tab-btn.active {
    background: linear-gradient(135deg, rgba(201, 168, 76, .15), rgba(201, 168, 76, .05));
    color: var(--gold);
    border-left: 2px solid var(--gold);
    padding-left: 10px;
}

.tab-nav.horizontal .tab-btn.active {
    border-left: none;
    border-bottom: 2px solid var(--gold);
    background: linear-gradient(to top, rgba(201, 168, 76, .15), transparent);
    padding-left: 20px;
}

.tab-btn .icon {
    font-size: 1rem;
    text-align: center;
}

.sidebar-divider {
    margin: 8px 12px;
    border: none;
    border-top: 1px solid var(--border);
}

/* ── QUICK SUMMARY ───────────────────────────────────────────────── */
#sidebar-summary {
    padding: 12px;
}

.calculator-container .summary-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.summary-card.has-warning {
    border-color: var(--red);
}

.summary-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: .8rem;
}

.summary-item .label {
    color: var(--text-second);
}

.summary-item .value {
    font-weight: 600;
}

.summary-item .value.gold {
    color: var(--gold);
}

.summary-item .value.green {
    color: var(--green);
}

.summary-item .value.red {
    color: var(--red);
}

.warning-badge {
    background: rgba(224, 86, 86, .15);
    border: 1px solid var(--red);
    color: var(--red);
    border-radius: var(--radius-sm);
    padding: 5px 8px;
    font-size: .75rem;
    font-weight: 600;
    text-align: center;
}

.ok-badge {
    background: rgba(61, 202, 124, .12);
    border: 1px solid var(--green-dim);
    color: var(--green);
    border-radius: var(--radius-sm);
    padding: 5px 8px;
    font-size: .75rem;
    font-weight: 600;
    text-align: center;
}

/* ── MAIN CONTENT ────────────────────────────────────────────────── */
.main {
    flex: 1;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.tab-content {
    display: none;
    flex-direction: column;
    gap: 20px;
    animation: fadeIn .2s ease;
}

.tab-content.active {
    display: flex;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(6px);
    }

    to {
        opacity: 1;
        transform: none;
    }
}

/* ── SECTION HEADER ──────────────────────────────────────────────── */
.calculator-container .section-header h2 {
    font-size: 1.15rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--gold-light), var(--gold));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.calculator-container .section-header p {
    color: var(--text-second);
    font-size: .82rem;
    margin-top: 3px;
}

/* ── CARD ────────────────────────────────────────────────────────── */
.calculator-container .card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px;
}

.calculator-container .card h3 {
    font-size: .95rem;
    font-weight: 600;
    color: var(--text-second);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.calculator-container .card h3::after {
    content: '';
    flex: 1;
    height: 1px;
    background: linear-gradient(to right, var(--border), transparent);
}

.calculator-container .card-row {
    display: flex;
    gap: 16px;
}

.calculator-container .card-row>.card {
    flex: 1;
}

/* ── FORM ────────────────────────────────────────────────────────── */
.calculator-container .form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 14px;
}

.calculator-container .form-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.calculator-container .form-group label {
    font-size: .78rem;
    color: var(--text-second);
    font-weight: 500;
}

/* Editable field marker */
.calculator-container .fg-edit {
    position: relative;
}

.calculator-container .fg-edit label::before {
    content: '✏️';
    font-size: .65rem;
    margin-right: 4px;
    vertical-align: middle;
}

.fg-edit input,
.fg-edit select {
    border-left: 2px solid var(--gold-dim);
}

.fg-edit input:focus {
    border-left-color: var(--gold);
}

/* Auto-calculated field marker */
.fg-auto {
    position: relative;
}

.fg-auto label {
    color: var(--text-dim);
}

.fg-auto label::before {
    content: '🔒';
    font-size: .6rem;
    margin-right: 3px;
    vertical-align: middle;
}

.fg-auto input {
    background: rgba(14, 21, 36, .5);
    border: 1px solid rgba(30, 47, 74, .4);
    color: var(--text-second);
    cursor: default;
}

.calculator-container input[type="text"],
.calculator-container input[type="number"],
.calculator-container select,
.calculator-container textarea {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid var(--border-light);
    color: #f0f0f0;
    padding: 8px 10px;
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: .88rem;
    font-weight: 500;
    transition: var(--transition);
    width: 100%;
}

.calculator-container input:focus,
.calculator-container select:focus,
.calculator-container textarea:focus {
    outline: none;
    border-color: var(--gold);
    box-shadow: 0 0 0 2px rgba(201, 168, 76, .15);
}

.calculator-container input.error {
    border-color: var(--red);
}

.calculator-container input.warning-input {
    border-color: #e09a32;
}

.calculator-container select option {
    background: var(--bg-card);
}

.calculator-container input[type="range"] {
    width: 100%;
    accent-color: var(--gold);
    background: transparent;
    border: none;
    padding: 4px 0;
}

/* ── RADIO / TOGGLE ──────────────────────────────────────────────── */
.radio-group {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.radio-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 7px 14px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-light);
    cursor: pointer;
    font-size: .85rem;
    color: var(--text-second);
    transition: var(--transition);
}

.radio-btn input[type="radio"] {
    display: none;
}

.radio-btn:hover {
    border-color: var(--gold-dim);
    color: var(--text-primary);
}

.radio-btn.active {
    border-color: var(--gold);
    color: var(--gold);
    background: rgba(201, 168, 76, .1);
}

/* ── RATIO SLIDER ────────────────────────────────────────────────── */
.ratio-slider {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.ratio-labels {
    display: flex;
    justify-content: space-between;
    font-size: .8rem;
    color: var(--text-second);
}

.ratio-labels .rl-left {
    color: var(--gold);
    font-weight: 600;
}

.ratio-labels .rl-right {
    color: var(--blue);
    font-weight: 600;
}

/* ── OWNER PANEL ─────────────────────────────────────────────────── */
.owner-panels {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

@media (max-width: 900px) {
    .owner-panels {
        grid-template-columns: 1fr;
    }
}

.calculator-container .owner-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px;
}

.calculator-container .owner-card.owner-1 {
    border-top: 3px solid var(--gold);
}

.calculator-container .owner-card.owner-2 {
    border-top: 3px solid var(--blue);
}

.owner-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.owner-title {
    font-size: 1rem;
    font-weight: 700;
}

.owner-1 .owner-title {
    color: var(--gold);
}

.owner-2 .owner-title {
    color: var(--blue);
}

.toggle-switch {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: .8rem;
    color: var(--text-second);
}

.switch {
    position: relative;
    width: 36px;
    height: 20px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider-sw {
    position: absolute;
    inset: 0;
    background: var(--bg-card2);
    border-radius: 20px;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid var(--border-light);
}

.slider-sw::before {
    content: '';
    position: absolute;
    left: 2px;
    top: 50%;
    transform: translateY(-50%);
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--text-dim);
    transition: var(--transition);
}

input:checked+.slider-sw {
    background: rgba(201, 168, 76, .25);
    border-color: var(--gold);
}

input:checked+.slider-sw::before {
    background: var(--gold);
    transform: translate(16px, -50%);
}

/* ── SALARY BAR ──────────────────────────────────────────────────── */
.salary-bar-wrap {
    margin-top: 12px;
}

.salary-bar-label {
    display: flex;
    justify-content: space-between;
    font-size: .75rem;
    margin-bottom: 4px;
}

.salary-bar-bg {
    background: var(--bg-card2);
    border-radius: 4px;
    height: 8px;
    overflow: hidden;
}

.salary-bar-fill {
    height: 100%;
    border-radius: 4px;
    transition: width .4s ease;
}

.salary-bar-fill.ok {
    background: linear-gradient(to right, var(--green-dim), var(--green));
}

.salary-bar-fill.warn {
    background: linear-gradient(to right, #8a6f30, #e09a32);
}

.salary-bar-fill.over {
    background: linear-gradient(to right, var(--red-dim), var(--red));
}

.salary-status {
    font-size: .75rem;
    margin-top: 4px;
    font-weight: 600;
}

.salary-status.ok {
    color: var(--green);
}

.salary-status.warn {
    color: #e09a32;
}

.salary-status.over {
    color: var(--red);
}

/* ── OCCUPANCY GRID ──────────────────────────────────────────────── */
.occ-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 8px;
}

@media (max-width: 700px) {
    .occ-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.occ-cell {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.occ-cell label {
    font-size: .72rem;
    color: var(--text-second);
}

.occ-cell input {
    text-align: center;
    padding: 5px;
}

/* ── EXPENSES TABLE ──────────────────────────────────────────────── */
.expense-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.expense-row {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    background: var(--bg-card2);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}

.expense-row .exp-name {
    flex: 1;
    font-size: .85rem;
}

.expense-row .exp-badge {
    font-size: .7rem;
    padding: 2px 7px;
    border-radius: 20px;
    font-weight: 600;
}

.exp-badge.one-time {
    background: rgba(155, 109, 255, .15);
    color: var(--purple);
}

.exp-badge.recurring {
    background: rgba(74, 144, 217, .15);
    color: var(--blue);
}

.expense-row input {
    width: 110px;
    text-align: right;
    font-weight: 600;
    color: #fff;
    background: rgba(255, 255, 255, 0.1);
}

.btn-remove {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-dim);
    width: 24px;
    height: 24px;
    border-radius: 4px;
    cursor: pointer;
}

.btn-remove:hover {
    border-color: var(--red);
    color: var(--red);
}

/* ── BUTTONS ─────────────────────────────────────────────────────── */
.calculator-container .btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: .85rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    background: var(--gold);
    color: #fff;
}

.calculator-container .btn:hover {
    opacity: .85;
}

.calculator-container .btn-outline {
    background: transparent;
    border: 1px dashed var(--gold-dim);
    color: var(--gold);
}

.calculator-container .btn-outline:hover {
    background: rgba(201, 168, 76, .1);
    border-color: var(--gold);
}

.calculator-container .btn-sm {
    padding: 6px 12px;
    font-size: .8rem;
}

.add-expense-row {
    display: flex;
    justify-content: flex-start;
}

/* ── METRIC TILES ────────────────────────────────────────────────── */
.metric-tiles {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 12px;
}

.metric-tile {
    background: var(--bg-card2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.metric-tile .label {
    font-size: .72rem;
    color: var(--text-second);
}

.metric-tile .value {
    font-size: 1.1rem;
    font-weight: 700;
}

.mt-gold .value {
    color: var(--gold);
}

.mt-green .value {
    color: var(--green);
}

.mt-red .value {
    color: var(--red);
}

.mt-purple .value {
    color: var(--purple);
}

.mt-blue .value {
    color: var(--blue);
}

.metric-tile .note {
    font-size: .65rem;
    color: var(--text-dim);
}

/* ── CHART GRID ──────────────────────────────────────────────────── */
.chart-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

@media (max-width: 1000px) {
    .chart-grid {
        grid-template-columns: 1fr;
    }
}

.chart-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.chart-card.wide {
    grid-column: 1 / -1;
}

.chart-card h4 {
    font-size: .9rem;
    color: var(--text-second);
}

.chart-wrap {
    height: 300px;
    width: 100%;
}

/* ── COMPARISON BANNER ───────────────────────────────────────────── */
.compare-banner {
    display: flex;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.compare-side {
    flex: 1;
    padding: 20px;
}

.compare-side.lt {
    border-right: 1px solid var(--border);
    background: rgba(201, 168, 76, .03);
}

.compare-side.st {
    background: rgba(74, 144, 217, .03);
}

.compare-side h4 {
    margin-bottom: 12px;
    font-size: 1rem;
}

.compare-side.lt h4 {
    color: var(--gold);
}

.compare-side.st h4 {
    color: var(--blue);
}

.cs-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 6px;
    font-size: .85rem;
}

.cs-label {
    color: var(--text-second);
}

.cs-value {
    font-weight: 700;
}

/* ── HELP MODAL ── */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 1000;
    background: rgba(5, 9, 20, .85);
    backdrop-filter: blur(6px);
    justify-content: center;
    align-items: flex-start;
    padding: 60px 16px;
}

.modal-overlay.open {
    display: flex;
}

.modal-box {
    background: #0e1524;
    border: 1px solid #253d5e;
    border-radius: 16px;
    max-width: 760px;
    width: 100%;
    max-height: 82vh;
    overflow-y: auto;
    box-shadow: 0 8px 48px rgba(0, 0, 0, .7);
    animation: fadeIn .2s ease;
}

.modal-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid #1e2f4a;
    position: sticky;
    top: 0;
    background: #0e1524;
    z-index: 1;
}

.modal-head h2 {
    font-size: 1.05rem;
    font-weight: 700;
    color: #c9a84c;
}

.modal-close {
    background: none;
    border: 1px solid #1e2f4a;
    color: #8fa3c0;
    width: 28px;
    height: 28px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 1rem;
    line-height: 1;
}

.modal-close:hover {
    border-color: #e05656;
    color: #e05656;
}

.modal-body {
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.help-section h3 {
    font-size: .88rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: #c9a84c;
    display: flex;
    align-items: center;
    gap: 8px;
}

.help-section p,
.help-section li {
    font-size: .83rem;
    color: #8fa3c0;
    line-height: 1.65;
}

.help-section ul {
    padding-left: 18px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.help-section li strong {
    color: #e8eaf0;
}

.help-tag {
    display: inline-block;
    padding: 1px 7px;
    border-radius: 10px;
    font-size: .7rem;
    font-weight: 700;
    margin-right: 4px;
    vertical-align: middle;
}

.ht-gold {
    background: rgba(201, 168, 76, .2);
    color: #c9a84c;
}

.ht-red {
    background: rgba(224, 86, 86, .2);
    color: #e05656;
}

.ht-green {
    background: rgba(61, 202, 124, .2);
    color: #3dca7c;
}

.ht-blue {
    background: rgba(74, 144, 217, .2);
    color: #4a90d9;
}

.help-tip {
    background: rgba(201, 168, 76, .07);
    border: 1px solid rgba(201, 168, 76, .2);
    border-radius: 8px;
    padding: 10px 14px;
    font-size: .8rem;
    color: #8fa3c0;
}

.help-tip strong {
    color: #c9a84c;
}

.help-steps {
    counter-reset: step;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.help-step {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    padding: 10px 14px;
    background: #121e33;
    border-radius: 8px;
    border: 1px solid #1e2f4a;
}

.help-step-num {
    counter-increment: step;
    background: #c9a84c;
    color: #000;
    font-weight: 800;
    font-size: .75rem;
    min-width: 22px;
    height: 22px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.help-step-num::before {
    content: counter(step);
}

.help-step-text {
    font-size: .82rem;
    color: #8fa3c0;
    line-height: 1.6;
}

.help-step-text strong {
    color: #e8eaf0;
}

.help-divider {
    border: none;
    border-top: 1px solid #1e2f4a;
}

/* ── RESPONSIVE LAYOUT (Tablet ≤991px) ───────────────────────────── */
@media (max-width: 991px) {
    .calculator-container {
        padding-top: 140px;
    }

    .calculator-container .app-layout {
        flex-direction: column;
        height: auto;
        min-height: calc(100vh - 120px);
    }

    .calculator-container .sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--border);
        overflow-y: visible;
    }

    .tab-nav {
        flex-direction: row;
        overflow-x: auto;
        padding: 10px;
        gap: 8px;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }

    .tab-nav::-webkit-scrollbar {
        display: none;
    }

    .tab-btn {
        width: auto;
        white-space: nowrap;
        padding: 8px 16px;
        justify-content: center;
    }

    .tab-btn.active {
        border-left: none;
        border-bottom: 2px solid var(--gold);
        padding-left: 16px;
        background: rgba(173, 129, 82, 0.1);
    }

    /* Topnav */
    .calculator-container .topnav {
        flex-wrap: wrap;
        height: auto;
        padding: 12px 16px;
        gap: 12px;
    }

    .calculator-container .topnav .logo {
        width: 100%;
        text-align: center;
        font-size: 1.1rem;
        margin-bottom: 4px;
    }

    .topnav-right {
        width: 100%;
        justify-content: flex-start;
        flex-wrap: wrap;
        gap: 8px;
        overflow-x: visible;
        padding-bottom: 4px;
    }

    .nav-btn {
        flex-shrink: 0;
    }

    #scenario-select,
    .scenario-name-input {
        max-width: 100%;
        flex: 1 1 40%;
    }

    .calculator-container .form-grid {
        grid-template-columns: 1fr;
    }

    .calculator-container .card-row {
        flex-direction: column;
    }

    .occ-grid {
        grid-template-columns: repeat(3, 1fr) !important;
    }

    .calculator-container .owner-panels {
        grid-template-columns: 1fr;
    }

    .main {
        overflow-y: visible;
        padding: 16px;
    }

    /* ── Horizontal tabs + scenario management ── */
    .tab-nav.horizontal {
        flex-wrap: wrap;
        gap: 6px;
        padding: 10px 0 12px 0;
        margin-bottom: 16px;
    }

    .tab-nav.horizontal .tab-btn {
        padding: 8px 14px;
        font-size: .82rem;
    }

    .scenario-management {
        width: 100% !important;
        margin-left: 0 !important;
        padding-left: 0 !important;
        border-left: none !important;
        padding-top: 10px !important;
        border-top: 1px solid var(--border) !important;
        justify-content: flex-start !important;
    }

    /* ── Expense rows ── */
    .expense-row {
        flex-wrap: wrap;
        gap: 8px;
    }

    .expense-row .exp-name {
        flex: 1 1 100%;
        font-size: .82rem;
    }

    .expense-row input {
        width: 100px;
    }

    /* ── Compare banner (LT vs ST) ── */
    .compare-banner {
        flex-direction: column;
    }

    .compare-side.lt {
        border-right: none;
        border-bottom: 1px solid var(--border);
    }

    /* ── Chart adjustments ── */
    .chart-wrap {
        height: 240px;
    }

    .chart-grid {
        grid-template-columns: 1fr;
    }

    /* ── Data tables horizontal scroll ── */
    .table-wrapper {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    /* ── Metric tiles ── */
    .metric-tiles {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    }

    .metric-tile .value {
        font-size: .95rem;
    }
}

/* ── RESPONSIVE LAYOUT (Mobile ≤600px) ───────────────────────────── */
@media (max-width: 600px) {
    .calculator-container {
        padding-top: 130px;
    }

    .main {
        padding: 10px;
    }

    /* ── Cards ── */
    .calculator-container .card {
        padding: 14px;
        border-radius: var(--radius);
    }

    .calculator-container .card h3 {
        font-size: .88rem;
    }

    /* ── Tab text: show icons only on small screens ── */
    .tab-nav.horizontal .tab-btn .text {
        display: none;
    }

    .tab-nav.horizontal .tab-btn {
        padding: 8px 12px;
        gap: 0;
    }

    .tab-nav.horizontal .tab-btn .icon {
        font-size: 1.15rem;
    }

    /* ── Scenario management compact ── */
    .scenario-management select {
        font-size: 12px !important;
        max-width: 140px;
    }

    /* ── Expense rows ── */
    .expense-row {
        padding: 8px 10px;
    }

    .expense-row .exp-name {
        font-size: .78rem;
    }

    .expense-row input {
        width: 80px;
        font-size: .82rem;
    }

    /* ── Charts ── */
    .chart-wrap {
        height: 200px;
    }

    .chart-card {
        padding: 14px;
    }

    /* ── Metric tiles stack 2 cols ── */
    .metric-tiles {
        grid-template-columns: 1fr 1fr;
        gap: 8px;
    }

    .metric-tile {
        padding: 10px;
    }

    .metric-tile .value {
        font-size: .88rem;
    }

    /* ── Summary card ── */
    .summary-item {
        font-size: .75rem;
    }

    /* ── Compare banner ── */
    .compare-side {
        padding: 14px;
    }

    .cs-row {
        font-size: .78rem;
    }

    /* ── Owner panels ── */
    .calculator-container .owner-card {
        padding: 14px;
    }
}

/* ── RESPONSIVE LAYOUT (XS ≤480px) ──────────────────────────────── */
@media (max-width: 480px) {
    .occ-grid {
        grid-template-columns: repeat(2, 1fr) !important;
    }

    .calculator-container .topnav .logo {
        width: 100%;
        text-align: center;
        margin-bottom: 4px;
    }

    .calculator-container .form-grid {
        gap: 10px;
    }

    .calculator-container .form-group label {
        font-size: .72rem;
    }

    .calculator-container input[type="text"],
    .calculator-container input[type="number"],
    .calculator-container select {
        padding: 6px 8px;
        font-size: .82rem;
    }

    /* Metric tiles: single column on very small */
    .metric-tiles {
        grid-template-columns: 1fr;
    }

    /* Radio buttons wrap better */
    .radio-group {
        gap: 6px;
    }

    .radio-btn {
        padding: 5px 10px;
        font-size: .8rem;
    }
}

/* ── INTERNATIONAL SECTION ────────────────────────────────────────── */
.international-section {
    margin-top: 12px;
    padding-top: 10px;
    border-top: 1px dashed var(--border);
}

.intl-header {
    font-size: .7rem;
    font-weight: 700;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: .05em;
    margin-bottom: 8px;
}

.intl-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px;
}

.intl-item {
    display: flex;
    flex-direction: column;
    background: rgba(255, 255, 255, .03);
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(255, 255, 255, .05);
}

.intl-code {
    font-size: .6rem;
    font-weight: 700;
    color: var(--gold-dim);
}

.intl-val {
    font-size: .75rem;
    font-weight: 600;
    color: var(--text-primary);
}

.conv-badge {
    font-size: 0.7rem;
    color: var(--gold);
    font-weight: 500;
    margin-left: 4px;
    vertical-align: middle;
}

.conv-label-badge {
    font-size: 0.72rem;
    color: var(--gold);
    font-weight: 600;
    background: rgba(212, 175, 55, 0.08);
    padding: 1px 5px;
    border-radius: 4px;
    margin-left: 8px;
    display: inline-block;
}

.summary-item .value .conv-badge {
    display: block;
    text-align: right;
    margin-top: 1px;
}