/* ── CSS VARIABLES ── */

:root {
    /* IEA brand colors */
    --iea-green:       #18AA4F;
    --iea-green-dark:  #128a3e;
    --iea-green-light: #e8f7ee;
    --iea-yellow:      #EFE48F;
    --iea-yellow-dark: #d4c96a;
    --iea-black:       #231F20;

    /* Light mode tokens */
    --bg-page:         #f5f7f5;
    --bg-card:         #ffffff;
    --bg-header:       var(--iea-green);
    --bg-footer:       var(--iea-black);
    --border-header:   var(--iea-green-dark);
    --text-primary:    #231F20;
    --text-secondary:  #5a5a5a;
    --text-muted:      #8a8a8a;
    --text-nav:        #ffffff;
    --text-nav-hover:  var(--iea-black);
    --nav-item-bg-hover: var(--iea-yellow);
    --nav-active-bg:   var(--iea-yellow);
    --nav-active-text: var(--iea-black);
    --card-shadow:     0 2px 8px rgba(0,0,0,0.07);
    --card-shadow-hover: 0 6px 20px rgba(0,0,0,0.12);
    --border-subtle:   #e0e0e0;
    --toggle-bg:       var(--iea-green-dark);
    --toggle-knob:     var(--iea-yellow);

    /* Card accent colors derived from IEA palette */
    --color-total:     #18AA4F;
    --color-total-bg:  #e8f7ee;
    --color-domestic:  #d4a017;
    --color-domestic-bg: #fdf6dc;
    --color-external:  #2a7abf;
    --color-external-bg: #e8f2fb;
}

[data-theme="dark"] {
    --bg-page:         #1a1c1a;
    --bg-card:         #252825;
    --bg-header:       #0d5c2a;
    --bg-footer:       #111311;
    --border-header:   #0a4520;
    --text-primary:    #e8ede8;
    --text-secondary:  #a8b0a8;
    --text-muted:      #6a726a;
    --text-nav:        var(--iea-yellow);
    --text-nav-hover:  var(--iea-black);
    --nav-item-bg-hover: var(--iea-yellow);
    --nav-active-bg:   var(--iea-yellow);
    --nav-active-text: var(--iea-black);
    --card-shadow:     0 2px 8px rgba(0,0,0,0.3);
    --card-shadow-hover: 0 6px 20px rgba(0,0,0,0.45);
    --border-subtle:   #2e322e;
    --toggle-bg:       var(--iea-yellow-dark);
    --toggle-knob:     var(--iea-black);

    --color-total-bg:  #1a2e20;
    --color-domestic-bg: #2a2410;
    --color-external-bg: #162030;
}

/* ── RESET ── */

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-page);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: background 0.3s, color 0.3s;
    padding-bottom: 110px;
}

/* ── HEADER / NAV ── */

.header {
    background: var(--bg-header);
    padding: 0 2rem;
    position: sticky;
    top: 0;
    z-index: 200;
    border-bottom: 3px solid var(--iea-yellow);
}

.header nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 56px;
    overflow: hidden;
}

.nav-brand {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    margin-right: 1rem;
}

.nav-logo {
    height: 36px;
    width: auto;
    object-fit: contain;
    background: #ffffff;
    border-radius: 6px;
    padding: 3px 6px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 0.25rem;
    align-items: center;
    flex: 1;
}

.nav-links li {
    color: var(--text-nav);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    padding: 0.4rem 0.9rem;
    border-radius: 6px;
    transition: background 0.2s, color 0.2s;
    white-space: nowrap;
}

.nav-links li:hover {
    background: var(--nav-item-bg-hover);
    color: var(--text-nav-hover);
}

/* ── HAMBURGER ── */

.nav-right {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-shrink: 0;
}

.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 36px;
    height: 36px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 4px;
    border-radius: 6px;
    transition: background 0.2s;
}

.hamburger:hover {
    background: rgba(255,255,255,0.15);
}

.hamburger span {
    display: block;
    height: 2px;
    width: 100%;
    background: var(--text-nav);
    border-radius: 2px;
    transition: transform 0.3s, opacity 0.3s;
    transform-origin: center;
}

.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── MOBILE SIDEBAR ── */

.mobile-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 300;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.mobile-overlay.open {
    opacity: 1;
    pointer-events: auto;
}

.mobile-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: 280px;
    height: 100vh;
    background: var(--bg-header);
    z-index: 400;
    display: flex;
    flex-direction: column;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    box-shadow: 4px 0 20px rgba(0, 0, 0, 0.3);
}

.mobile-sidebar.open {
    transform: translateX(0);
}

.mobile-sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.25rem;
    border-bottom: 2px solid var(--iea-yellow);
    flex-shrink: 0;
}

.sidebar-close {
    background: transparent;
    border: none;
    color: var(--text-nav);
    font-size: 1.1rem;
    cursor: pointer;
    width: 32px;
    height: 32px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
}

.sidebar-close:hover {
    background: rgba(255, 255, 255, 0.15);
}

.mobile-sidebar-nav {
    flex: 1;
    list-style: none;
    padding: 0.75rem 0;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

.mobile-sidebar-nav li {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    color: var(--text-nav);
    font-size: 0.95rem;
    font-weight: 500;
    padding: 0.9rem 1.5rem;
    cursor: pointer;
    border-left: 3px solid transparent;
    transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.mobile-sidebar-nav li i {
    width: 18px;
    text-align: center;
    opacity: 0.85;
}

.mobile-sidebar-nav li:hover {
    background: rgba(255, 255, 255, 0.1);
    border-left-color: var(--iea-yellow);
    color: var(--iea-yellow);
}

.mobile-sidebar-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    flex-shrink: 0;
}

.sidebar-theme-toggle {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.sidebar-theme-label {
    font-size: 0.85rem;
    color: var(--text-nav);
    user-select: none;
}

body.sidebar-open {
    overflow: hidden;
}

/* ── THEME TOGGLE ── */

.theme-toggle {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    flex-shrink: 0;
}

.theme-toggle-label {
    font-size: 0.8rem;
    color: var(--text-nav);
    user-select: none;
}

.toggle-switch {
    position: relative;
    width: 40px;
    height: 22px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
    position: absolute;
}

.toggle-track {
    position: absolute;
    inset: 0;
    background: var(--toggle-bg);
    border-radius: 22px;
    transition: background 0.3s;
    cursor: pointer;
}

.toggle-track::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    left: 3px;
    top: 3px;
    background: var(--toggle-knob);
    border-radius: 50%;
    transition: transform 0.3s;
}

.toggle-switch input:checked + .toggle-track {
    background: var(--iea-green);
}

.toggle-switch input:checked + .toggle-track::after {
    transform: translateX(18px);
}

.toggle-icon {
    font-size: 0.85rem;
    color: var(--text-nav);
}

/* ── PAGE SECTIONS ── */

.not-active {
    display: none !important;
}

#debt-indicators.active,
#expenditure.active,
#other-indicators.active,
#simulate.active,
#about.active {
    animation: sectionFadeIn 0.35s ease forwards;
}

@keyframes sectionFadeIn {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* non-content panels need top padding */
#expenditure, #other-indicators, #simulate, #about {
    padding-top: 2rem;
}

/* placeholder for empty sections */
.section-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    min-height: 300px;
    max-width: 1200px;
    margin: 2rem auto;
    padding: 2rem;
    border: 2px dashed var(--border-subtle);
    border-radius: 12px;
    color: var(--text-muted);
}

.section-placeholder i {
    font-size: 2.5rem;
    color: var(--iea-green);
    opacity: 0.4;
}

[data-theme="dark"] .section-placeholder i { color: var(--iea-yellow); }

.section-placeholder p {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin: 0;
}

.section-placeholder span {
    font-size: 0.8rem;
}

/* active nav item highlight */
.nav-links .nav-item.active {
    background: var(--nav-active-bg);
    color: var(--nav-active-text);
}

.mobile-sidebar-nav .nav-item.active {
    background: rgba(255,255,255,0.15);
    border-left-color: var(--iea-yellow);
    color: var(--iea-yellow);
}

/* ── CONTENT ── */

.content {
    flex: 1;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

/* ── INFO PANEL ── */

.info-panel {
    display: flex;
    justify-content: center;
    width: 100%;
}

.growth-panel {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: var(--card-shadow);
    border-top: 4px solid var(--iea-green);
    display: flex;
    flex-direction: column;
    gap: 1rem;
    width: 100%;
    transition: background 0.3s;
}

.flag-block {
    display: flex;
    justify-content: center;
}

.flag-block img {
    width: 80px;
    height: auto;
    border-radius: 6px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

/* ── CLOCK BLOCK ── */

.clock-block {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    padding: 0.75rem 0;
    border-top: 1px solid var(--border-subtle);
    border-bottom: 1px solid var(--border-subtle);
}

.digital-clock {
    text-align: center;
}

.digital-date {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    letter-spacing: 0.3px;
}

.digital-time {
    font-size: 2rem;
    font-weight: 700;
    color: var(--iea-green);
    font-variant-numeric: tabular-nums;
    letter-spacing: 3px;
    line-height: 1.2;
}

[data-theme="dark"] .digital-time {
    color: var(--iea-yellow);
}

.growth-title {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.6px;
    color: var(--text-secondary);
}

.growth-panel select {
    width: 100%;
    padding: 0.4rem 0.6rem;
    border: 1px solid var(--border-subtle);
    border-radius: 6px;
    background: var(--bg-page);
    color: var(--text-primary);
    font-size: 0.85rem;
    cursor: pointer;
    transition: background 0.3s, color 0.3s;
}

.growth-panel select:focus {
    outline: none;
    border-color: var(--iea-green);
}

.growth-block {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0.75rem;
    border-radius: 8px;
    gap: 0.5rem;
}

.growth-block.total-debt    { background: var(--color-total-bg); }
.growth-block.domestic-debt { background: var(--color-domestic-bg); }
.growth-block.external-debt { background: var(--color-external-bg); }

.growth-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.4px;
}

.growth-value {
    font-size: 0.9rem;
    font-weight: 700;
}

.growth-block.total-debt    .growth-label,
.growth-block.total-debt    .growth-value { color: var(--color-total); }

.growth-block.domestic-debt .growth-label,
.growth-block.domestic-debt .growth-value { color: var(--color-domestic); }

.growth-block.external-debt .growth-label,
.growth-block.external-debt .growth-value { color: var(--color-external); }

/* ── CARD GRID ── */

.card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    width: 100%;
}

/* ── CARD ── */

.card {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 1.75rem 1.5rem;
    display: flex;
    align-items: flex-start;
    gap: 1.25rem;
    box-shadow: var(--card-shadow);
    border-top: 4px solid transparent;
    transition: transform 0.2s, box-shadow 0.2s, background 0.3s;
}

.card:hover {
    transform: translateY(-3px);
    box-shadow: var(--card-shadow-hover);
}

.card.total    { border-top-color: var(--color-total); }
.card.domestic { border-top-color: var(--color-domestic); }
.card.external { border-top-color: var(--color-external); }

/* ── CARD ICON ── */

.card-icon {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
    transition: background 0.3s;
}

.card.total    .card-icon { background: var(--color-total-bg);    color: var(--color-total); }
.card.domestic .card-icon { background: var(--color-domestic-bg); color: var(--color-domestic); }
.card.external .card-icon { background: var(--color-external-bg); color: var(--color-external); }

/* ── CARD BODY ── */

.card-body {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    min-width: 0;
}

.card-label {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.6px;
    color: var(--text-secondary);
}

.card-value {
    font-size: 1.4rem;
    font-weight: 700;
    word-break: break-word;
}

.debt-amount,
.expense-amount {
    display: block;
    font-size: 1.5rem;
    font-weight: 800;
    line-height: 1.2;
}

.card.total    .card-value { color: var(--color-total); }
.card.domestic .card-value { color: var(--color-domestic); }
.card.external .card-value { color: var(--color-external); }

.card-date {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.card-subtitle {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* ── CHARTS PANEL ── */

#data-charts {
    width: 100%;
}

.charts-panel {
    background: var(--bg-card);
    border-radius: 12px;
    box-shadow: var(--card-shadow);
    border-top: 4px solid var(--iea-green);
    overflow: hidden;
    transition: background 0.3s;
}

.charts-tabs {
    display: flex;
    gap: 0;
    border-bottom: 1px solid var(--border-subtle);
    overflow-x: auto;
    scrollbar-width: none;
}

.charts-tabs::-webkit-scrollbar { display: none; }

.chart-tab {
    flex-shrink: 0;
    padding: 0.75rem 1.25rem;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    cursor: pointer;
    transition: color 0.2s, border-color 0.2s, background 0.2s;
    white-space: nowrap;
}

.chart-tab:hover {
    color: var(--iea-green);
    background: var(--iea-green-light);
}

.chart-tab.active {
    color: var(--iea-green);
    border-bottom-color: var(--iea-green);
}

[data-theme="dark"] .chart-tab.active {
    color: var(--iea-yellow);
    border-bottom-color: var(--iea-yellow);
}

[data-theme="dark"] .chart-tab:hover {
    color: var(--iea-yellow);
    background: rgba(239, 228, 143, 0.08);
}

.chart-pane {
    display: none;
    padding: 2rem;
}

.chart-pane.active {
    display: block;
}

.chart-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    min-height: 320px;
    color: var(--text-muted);
    border: 2px dashed var(--border-subtle);
    border-radius: 8px;
}

.chart-placeholder i {
    font-size: 2.5rem;
    color: var(--iea-green);
    opacity: 0.4;
}

[data-theme="dark"] .chart-placeholder i {
    color: var(--iea-yellow);
}

.chart-placeholder p {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin: 0;
}

.chart-placeholder span {
    font-size: 0.8rem;
    color: var(--text-muted);
}



/* ── EXPENDITURE ── */

#expenditure {
    padding-top: 2rem;
}

.exp-panel {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem 1.5rem;
    background: var(--bg-card);
    border-radius: 12px;
    box-shadow: var(--card-shadow);
    border-top: 4px solid var(--color-domestic);
    overflow: hidden;
    transition: background 0.3s;
    width: calc(100% - 4rem);
}

.exp-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-subtle);
    overflow-x: auto;
    scrollbar-width: none;
    margin: 0 -2rem;
    padding: 0 2rem;
}

.exp-tabs::-webkit-scrollbar { display: none; }

.exp-tab {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.75rem 1.25rem;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    cursor: pointer;
    transition: color 0.2s, border-color 0.2s, background 0.2s;
    white-space: nowrap;
}

.exp-tab:hover {
    color: var(--color-domestic);
    background: var(--color-domestic-bg);
}

.exp-tab.active {
    color: var(--color-domestic);
    border-bottom-color: var(--color-domestic);
}

[data-theme="dark"] .exp-tab.active { color: var(--iea-yellow); border-bottom-color: var(--iea-yellow); }
[data-theme="dark"] .exp-tab:hover  { color: var(--iea-yellow); background: rgba(239,228,143,0.08); }

.exp-pane {
    display: none;
    flex-direction: column;
    gap: 1.5rem;
    padding-top: 1.5rem;
}

.exp-pane.active { display: flex; }

/* card accents */
.card.exp-total    { border-top-color: var(--color-domestic); }
.card.exp-revenue  { border-top-color: var(--iea-green); }
.card.exp-deficit  { border-top-color: var(--color-external); }

.card.exp-total   .card-icon { background: var(--color-domestic-bg); color: var(--color-domestic); }
.card.exp-revenue .card-icon { background: var(--color-total-bg);    color: var(--color-total); }
.card.exp-deficit .card-icon { background: var(--color-external-bg); color: var(--color-external); }

.card.exp-total   .card-value { color: var(--color-domestic); }
.card.exp-revenue .card-value { color: var(--color-total); }
.card.exp-deficit .card-value { color: var(--color-external); }

/* growth-panel row accents for expenditure */
.growth-block.exp-total-block    { background: var(--color-domestic-bg); }
.growth-block.exp-revenue-block  { background: var(--color-total-bg); }
.growth-block.exp-deficit-block  { background: var(--color-external-bg); }
.growth-block.exp-interest-block { background: var(--iea-yellow); opacity: 0.7; }
.growth-block.exp-ratio-block    { background: var(--bg-page); border: 1px solid var(--border-subtle); }

.growth-block.exp-total-block   .growth-label,
.growth-block.exp-total-block   .growth-value { color: var(--color-domestic); }
.growth-block.exp-revenue-block .growth-label,
.growth-block.exp-revenue-block .growth-value { color: var(--color-total); }
.growth-block.exp-deficit-block .growth-label,
.growth-block.exp-deficit-block .growth-value { color: var(--color-external); }
.growth-block.exp-interest-block .growth-label,
.growth-block.exp-interest-block .growth-value { color: var(--iea-black); }
.growth-block.exp-ratio-block   .growth-label,
.growth-block.exp-ratio-block   .growth-value { color: var(--text-primary); }

/* exp chart tabs reuse chart-tab style */
.exp-chart-tab {
    flex-shrink: 0;
    padding: 0.75rem 1.25rem;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    cursor: pointer;
    transition: color 0.2s, border-color 0.2s, background 0.2s;
    white-space: nowrap;
}

.exp-chart-tab:hover  { color: var(--iea-green); background: var(--iea-green-light); }
.exp-chart-tab.active { color: var(--iea-green); border-bottom-color: var(--iea-green); }

[data-theme="dark"] .exp-chart-tab.active { color: var(--iea-yellow); border-bottom-color: var(--iea-yellow); }
[data-theme="dark"] .exp-chart-tab:hover  { color: var(--iea-yellow); background: rgba(239,228,143,0.08); }

@media (max-width: 768px) {
    .exp-panel { padding: 0 1rem 1rem; width: calc(100% - 2rem); }
    .exp-tabs  { margin: 0 -1rem; padding: 0 1rem; }
}

/* ── OTHER INDICATORS ── */

#other-indicators {
    padding-top: 2rem;
}

.oi-panel {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    width: 100%;
}

.oi-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.oi-large-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.oi-card,
.oi-large-card {
    border-top-color: var(--iea-green);
}

.oi-card .card-icon,
.oi-large-card .card-icon {
    background: var(--iea-green-light);
    color: var(--iea-green);
}

.oi-card .card-value,
.oi-large-card .card-value {
    color: var(--iea-green);
    font-size: 1.4rem;
    font-weight: 800;
}

/* oi-tab reuses chart-tab styles — just alias the active state */
.oi-tab {
    flex-shrink: 0;
    padding: 0.75rem 1.25rem;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    cursor: pointer;
    transition: color 0.2s, border-color 0.2s, background 0.2s;
    white-space: nowrap;
}

.oi-tab:hover {
    color: var(--iea-green);
    background: var(--iea-green-light);
}

.oi-tab.active {
    color: var(--iea-green);
    border-bottom-color: var(--iea-green);
}

[data-theme="dark"] .oi-tab.active {
    color: var(--iea-yellow);
    border-bottom-color: var(--iea-yellow);
}

[data-theme="dark"] .oi-tab:hover {
    color: var(--iea-yellow);
    background: rgba(239, 228, 143, 0.08);
}

@media (max-width: 1024px) {
    .oi-cards { grid-template-columns: repeat(2, 1fr); }
    .oi-cards .oi-card:first-child { grid-column: 1 / -1; }
}

@media (max-width: 768px) {
    .oi-panel { padding: 0 1rem 1rem; }
    .oi-cards,
    .oi-large-cards { grid-template-columns: 1fr; }
    .oi-cards .oi-card:first-child { grid-column: auto; }
}

/* ── DEBT INDICATORS TABS ── */

.di-panel {
    background: var(--bg-card);
    border-radius: 12px;
    box-shadow: var(--card-shadow);
    border-top: 4px solid var(--iea-green);
    overflow: hidden;
    transition: background 0.3s;
    width: 100%;
}

.di-tabs {
    display: flex;
    gap: 0;
    border-bottom: 1px solid var(--border-subtle);
    overflow-x: auto;
    scrollbar-width: none;
}

.di-tabs::-webkit-scrollbar { display: none; }

.di-tab {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.75rem 1.25rem;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    cursor: pointer;
    transition: color 0.2s, border-color 0.2s, background 0.2s;
    white-space: nowrap;
}

.di-tab:hover {
    color: var(--iea-green);
    background: var(--iea-green-light);
}

.di-tab.active {
    color: var(--iea-green);
    border-bottom-color: var(--iea-green);
}

[data-theme="dark"] .di-tab.active {
    color: var(--iea-yellow);
    border-bottom-color: var(--iea-yellow);
}

[data-theme="dark"] .di-tab:hover {
    color: var(--iea-yellow);
    background: rgba(239, 228, 143, 0.08);
}

.di-pane {
    display: none;
    padding: 1.5rem;
    flex-direction: column;
    gap: 1.5rem;
}

.di-pane.active {
    display: flex;
}

/* data-charts inside di-pane needs no extra padding */
.di-pane #data-charts {
    width: 100%;
}

/* ── SIMULATE PANEL ── */

#simulate {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem 1.5rem;
    width: 100%;
}

.simulate-panel {
    background: var(--bg-card);
    border-radius: 12px;
    box-shadow: var(--card-shadow);
    border-top: 4px solid var(--iea-green);
    overflow: hidden;
    transition: background 0.3s;
}

.simulate-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1.25rem 1.75rem 0;
}

.simulate-header i {
    font-size: 1.2rem;
    color: var(--iea-green);
}

[data-theme="dark"] .simulate-header i { color: var(--iea-yellow); }

.simulate-header h3 {
    font-size: 1rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.6px;
    color: var(--text-secondary);
    margin: 0;
}

/* tabs */
.simulate-tabs {
    display: flex;
    gap: 0;
    border-bottom: 1px solid var(--border-subtle);
    margin-top: 1rem;
    overflow-x: auto;
    scrollbar-width: none;
}

.simulate-tabs::-webkit-scrollbar { display: none; }

.sim-tab {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.75rem 1.25rem;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    cursor: pointer;
    transition: color 0.2s, border-color 0.2s, background 0.2s;
    white-space: nowrap;
}

.sim-tab:hover {
    color: var(--iea-green);
    background: var(--iea-green-light);
}

.sim-tab.active {
    color: var(--iea-green);
    border-bottom-color: var(--iea-green);
}

[data-theme="dark"] .sim-tab.active {
    color: var(--iea-yellow);
    border-bottom-color: var(--iea-yellow);
}

[data-theme="dark"] .sim-tab:hover {
    color: var(--iea-yellow);
    background: rgba(239, 228, 143, 0.08);
}

/* panes */
.sim-pane { display: none; padding: 1.5rem 1.75rem; }
.sim-pane.active {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.sim-description {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
}

/* sliders */
.sim-controls {
    display: flex;
    flex-direction: column;
    gap: 1.1rem;
    margin-bottom: 1.5rem;
}

.sim-control label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.4rem;
    text-transform: uppercase;
    letter-spacing: 0.4px;
}

.sim-slider-row {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin-bottom: 0.35rem;
}

.sim-slider-track {
    flex: 1;
    position: relative;
}

.sim-slider-track input[type="range"] {
    width: 100%;
    -webkit-appearance: none;
    appearance: none;
    height: 4px;
    border-radius: 4px;
    background: var(--border-subtle);
    outline: none;
    cursor: pointer;
    accent-color: var(--iea-green);
    display: block;
}

[data-theme="dark"] .sim-slider-track input[type="range"] {
    accent-color: var(--iea-yellow);
}

/* min / max badges */
.sim-badge {
    font-size: 0.78rem;
    font-weight: 600;
    padding: 0.2rem 0.5rem;
    border-radius: 5px;
    white-space: nowrap;
    background: var(--bg-page);
    color: var(--text-secondary);
    border: 1px solid var(--border-subtle);
    min-width: 2.8rem;
    text-align: center;
    transition: background 0.2s, color 0.2s;
}

.sim-badge-max.sim-badge-active {
    background: var(--iea-green);
    color: #fff;
    border-color: var(--iea-green);
}

[data-theme="dark"] .sim-badge-max.sim-badge-active {
    background: var(--iea-yellow);
    color: var(--iea-black);
    border-color: var(--iea-yellow);
}

/* tick marks */
.sim-ticks {
    position: relative;
    height: 28px;
    margin: 0 0.5rem;
}

.sim-tick {
    position: absolute;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1px;
}

.sim-tick-mark {
    display: block;
    width: 1px;
    height: 6px;
    background: var(--text-muted);
    opacity: 0.5;
}

.sim-tick-label {
    font-size: 0.65rem;
    color: var(--text-muted);
    white-space: nowrap;
}

.sim-slider-val {
    min-width: 3.5rem;
    text-align: right;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--iea-green);
}

[data-theme="dark"] .sim-slider-val { color: var(--iea-yellow); }

/* sim-simulation pane two-column layout */
#sim-simulation .sim-controls {
    flex: 1;
    min-width: 0;
}

/* ── SIMULATION LAYOUT ── */

/* top row: controls card (left) + summary card (right) */
.sim-simulation-top {
    display: flex;
    gap: 1.25rem;
    align-items: flex-start;
    width: 100%;
}

/* controls card */
.sim-controls-card {
    flex: 1;
    min-width: 0;
    background: var(--bg-page);
    border-radius: 10px;
    border: 1px solid var(--border-subtle);
    border-left: 3px solid var(--iea-green);
    padding: 1.25rem;
    transition: background 0.3s;
}

[data-theme="dark"] .sim-controls-card {
    border-left-color: var(--iea-yellow);
}

/* summary card */
.sim-summary {
    flex-shrink: 0;
    width: 240px;
    background: var(--bg-page);
    border-radius: 10px;
    border: 1px solid var(--border-subtle);
    border-top: 3px solid var(--iea-green);
    overflow: hidden;
    transition: background 0.3s;
}

[data-theme="dark"] .sim-summary {
    border-top-color: var(--iea-yellow);
}

.sim-summary-header {
    background: var(--iea-green);
    color: #fff;
    text-align: center;
    padding: 0.6rem 1rem;
    font-size: 0.85rem;
    font-weight: 600;
}

[data-theme="dark"] .sim-summary-header {
    background: var(--iea-yellow);
    color: var(--iea-black);
}

.sim-summary-header span {
    font-size: 1.2rem;
    font-weight: 800;
}

.sim-summary-body {
    display: flex;
    flex-direction: column;
}

.sim-stat {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.55rem 0.9rem;
    border-bottom: 1px solid var(--border-subtle);
    gap: 0.5rem;
}

.sim-stat:last-child { border-bottom: none; }

.sim-stat:nth-child(even) { background: rgba(0,0,0,0.02); }

[data-theme="dark"] .sim-stat:nth-child(even) { background: rgba(255,255,255,0.03); }

.sim-stat-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.sim-stat-value {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--iea-green);
    white-space: nowrap;
}

[data-theme="dark"] .sim-stat-value { color: var(--iea-yellow); }

@media (max-width: 768px) {
    .sim-simulation-top {
        flex-direction: column;
    }
    .sim-controls-card,
    .sim-summary {
        width: 100%;
    }
}



/* sim output placeholder — full width below top row */
.sim-output {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    min-height: 220px;
    border: 2px dashed var(--border-subtle);
    border-radius: 8px;
    color: var(--text-muted);
}

.sim-output i {
    font-size: 2.5rem;
    color: var(--iea-green);
    opacity: 0.4;
}

[data-theme="dark"] .sim-output i { color: var(--iea-yellow); }

.sim-output p {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin: 0;
}

.sim-output span {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* quiz */
.quiz-list {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    margin-bottom: 1.5rem;
}

.quiz-item {
    background: var(--bg-page);
    border-radius: 8px;
    padding: 1rem 1.25rem;
    border-left: 3px solid var(--iea-green);
    transition: background 0.3s;
}

[data-theme="dark"] .quiz-item { border-left-color: var(--iea-yellow); }

.quiz-q {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.quiz-options {
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
}

.quiz-options label {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.85rem;
    color: var(--text-primary);
    cursor: pointer;
    padding: 0.3rem 0.5rem;
    border-radius: 6px;
    transition: background 0.15s;
}

.quiz-options label:hover { background: var(--iea-green-light); }

[data-theme="dark"] .quiz-options label:hover { background: rgba(239,228,143,0.08); }

.quiz-options input[type="radio"] {
    accent-color: var(--iea-green);
    flex-shrink: 0;
}

[data-theme="dark"] .quiz-options input[type="radio"] { accent-color: var(--iea-yellow); }

.quiz-submit {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.5rem;
    background: var(--iea-green);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

.quiz-submit:hover { background: var(--iea-green-dark); }

[data-theme="dark"] .quiz-submit {
    background: var(--iea-yellow);
    color: var(--iea-black);
}

[data-theme="dark"] .quiz-submit:hover { background: var(--iea-yellow-dark); }

.quiz-result {
    margin-top: 1rem;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--iea-green);
    min-height: 1.5rem;
}

[data-theme="dark"] .quiz-result { color: var(--iea-yellow); }

/* about sim */
.sim-body {
    font-size: 0.9rem;
    line-height: 1.7;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

@media (max-width: 768px) {
    .chart-tab {
        padding: 0.65rem 0.9rem;
        font-size: 0.8rem;
    }

    .chart-pane {
        padding: 1.25rem;
    }
}

@media (max-width: 768px) {
    #simulate { padding: 0 1rem 1rem; }
    .simulate-header,
    .sim-pane { padding-left: 1.25rem; padding-right: 1.25rem; }
    .sim-tab { padding: 0.65rem 0.9rem; font-size: 0.8rem; }
}

/* ── ABOUT PANEL ── */

#about {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem 1.5rem;
    width: 100%;
}

.about-panel {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 1.75rem 2rem;
    box-shadow: var(--card-shadow);
    border-top: 4px solid var(--iea-green);
    display: flex;
    flex-direction: column;
    gap: 1rem;
    transition: background 0.3s;
}

.about-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border-subtle);
}

.about-header i {
    font-size: 1.2rem;
    color: var(--iea-green);
}

[data-theme="dark"] .about-header i {
    color: var(--iea-yellow);
}

.about-header h3 {
    font-size: 1rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.6px;
    color: var(--text-secondary);
    margin: 0;
}

.about-panel p {
    font-size: 0.9rem;
    line-height: 1.7;
    color: var(--text-primary);
    margin: 0;
}

@media (max-width: 768px) {
    #about {
        padding: 0 1rem 1rem;
    }

    .about-panel {
        padding: 1.25rem;
    }
}

/* ── DISCLAIMER ── */

.disclaimer {
    text-align: center;
    font-size: 0.75rem;
    color: var(--text-muted);
    padding: 0.5rem 2rem;
    border-top: 1px solid var(--border-subtle);
    background: var(--bg-page);
}

.disclaimer a {
    color: var(--iea-green);
    text-decoration: underline;
}

[data-theme="dark"] .disclaimer a {
    color: var(--iea-yellow);
}

/* ── FOOTER ── */

.footer {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    padding: 0.6rem 2rem;
    background: var(--iea-green);
    border-top: 3px solid var(--iea-yellow);
    transition: background 0.3s;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 100;
}

.footer-logos {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.footer-copy {
    font-size: 0.78rem;
    color: #ffffff;
    white-space: nowrap;
}

.footer img {
    height: 48px;
    width: auto;
    object-fit: contain;
    background: #ffffff;
    border-radius: 6px;
    padding: 3px 6px;
    opacity: 0.95;
    transition: opacity 0.2s;
}

.footer img:hover {
    opacity: 1;
}

[data-theme="dark"] .footer {
    background: #0d5c2a;
    border-top-color: var(--iea-yellow);
}

[data-theme="dark"] .footer-copy {
    color: var(--iea-yellow);
}

/* ── RESPONSIVE ── */

@media (max-width: 1024px) {
    .card-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .card.total {
        grid-column: 1 / -1;
    }
}

@media (max-width: 768px) {
    .header {
        padding: 0 1rem;
    }

    .nav-logo {
        height: 30px;
    }

    .nav-links {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    .header nav {
        overflow: visible;
    }

    .content {
        padding: 1rem;
        gap: 1rem;
    }

    .card-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .card.total {
        grid-column: auto;
    }

    .card {
        padding: 1.25rem 1rem;
    }

    .card-value {
        font-size: 1.15rem;
    }

    .card-icon {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    .digital-time {
        font-size: 1.5rem;
    }

    .footer {
        padding: 0.5rem 1rem;
        gap: 1rem;
    }

    .footer img {
        height: 32px;
    }

    .footer-copy {
        font-size: 0.7rem;
    }

    body {
        padding-bottom: 70px;
    }
}