/* Global Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Bundled fonts (if present in repo). */
@font-face {
    font-family: "Figtree Sans";
    src:
        url("fonts/Figtree-VariableFont_wght.woff2") format("woff2");
    font-style: normal;
    font-weight: 300 900;
    font-display: swap;
}

@font-face {
    font-family: "Figtree Sans";
    src:
        url("fonts/Figtree-Italic-VariableFont_wght.woff2") format("woff2");
    font-style: italic;
    font-weight: 300 900;
    font-display: swap;
}

@font-face {
    font-family: "Albert Sans";
    src:
        url("fonts/AlbertSans-VariableFont_wght.woff2") format("woff2");
    font-style: normal;
    font-weight: 100 900;
    font-display: swap;
}

@font-face {
    font-family: "Albert Sans";
    src:
        url("fonts/AlbertSans-Italic-VariableFont_wght.woff2") format("woff2");
    font-style: italic;
    font-weight: 100 900;
    font-display: swap;
}

:root {
    color-scheme: light;

    --content-max: 1280px;
    --layout-gutter: var(--spacing-lg);
    --radius-sm: 10px;
    --radius-md: 14px;
    --radius-lg: 18px;
    --radius-xl: 24px;

    /* Brand colors */
    --brand-blue: #033059;
    --brand-grey: #cfd3d3;
    --brand-charcoal: #525454;

    /* Semantic theme tokens (light by default) */
    --primary-color: var(--brand-blue);
    --primary-hover: #022749;
    --primary-light: #d9e0e8;
    --secondary-color: #f4f5f5;
    --text-dark: var(--brand-charcoal);
    --text-light: #8a8b8b;
    --border-color: var(--brand-grey);
    --page-bg: #f5f6f6;
    --surface-bg: #ffffff;
    --elevation-1: 0 1px 3px rgba(0, 0, 0, 0.10);
    --elevation-2: 0 10px 30px rgba(0, 0, 0, 0.10);

    /* Typography (Brand guide: Figtree Sans + Albert Sans; Gill Sans fallback) */
    --font-display: "Figtree Sans", "Figtree", "Gill Sans", "Gill Sans MT", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-body: "Albert Sans", "AlbertSans", "Gill Sans", "Gill Sans MT", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

    --success-color: #4caf50;
    --warning-color: #ff9800;
    --highlight-bg: #e9edf2;
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
}

body {
    font-family: var(--font-body);
    background:
        radial-gradient(1200px circle at 50% -10%, var(--primary-light), rgba(255, 255, 255, 0) 62%),
        var(--page-bg);
    color: var(--text-dark);
    line-height: 1.5;
}

.content-shell {
    max-width: var(--content-max);
    width: calc(100% - 2 * var(--layout-gutter));
    margin: 0 auto;
}

.container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    width: 100%;
}

/* Header */
.header {
    background-color: var(--primary-color);
    border-bottom: 1px solid #3d6085;
    padding: clamp(28px, 6vw, 64px) var(--spacing-md) clamp(20px, 4vw, 48px);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--elevation-1);
}

.header-content {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-start;
    gap: clamp(var(--spacing-md), 4vw, var(--spacing-xl));
    max-width: var(--content-max);
    margin: 0 auto;
    text-align: left;
}

.header-logo {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    width: auto;
}

.logo-badge {
    width: clamp(150px, 30vw, 280px);
    height: auto;
    max-width: none;
    display: block;
    object-fit: contain;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.header-text h1 {
    font-size: 20px;
    font-family: var(--font-display);
    font-weight: 700;
    letter-spacing: 0.02em;
    color: white;
    margin-bottom: 2px;
}

.header-text p {
    font-family: var(--font-body);
    font-size: 14px;
    color: rgba(255, 255, 255, 0.85);
}


/* Buttons */
.btn-reset,
.btn-export {
    font-family: var(--font-display);
    padding: 10px 20px;
    border: 1px solid rgba(207, 211, 211, 0.65);
    background-color: rgba(255, 255, 255, 0.08);
    color: rgba(255, 255, 255, 0.96);
    border-radius: 999px;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.01em;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-reset:hover,
.btn-export:hover {
    background-color: rgba(255, 255, 255, 0.14);
    border-color: rgba(255, 255, 255, 0.30);
}

.btn-reset:focus-visible,
.btn-export:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.24);
    border-color: rgba(255, 255, 255, 0.40);
}

.btn-reset,
.btn-export {
    background-color: var(--primary-color);
    color: white;
    border-color: rgba(255, 255, 255, 0.18);
}

.btn-export {
    width: 100%;
    margin-top: var(--spacing-lg);
}

.btn-export:hover {
    background-color: var(--primary-hover);
}

.btn-reset:hover {
    background-color: var(--primary-hover);
}

/* Hero */
.hero {
    padding: var(--spacing-xl) 0 var(--spacing-lg);
}

.hero-inner {
    width: 100%;
    background: var(--surface-bg);
    border-radius: var(--radius-xl);
    padding: clamp(20px, 3vw, 44px);
    border: 1px solid #e5e7e7;
    box-shadow: var(--elevation-2);
}

.hero-eyebrow {
    font-family: var(--font-display);
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    font-size: 12px;
    color: #6d6e6e;
    margin-bottom: 10px;
}

.hero-title {
    font-family: var(--font-display);
    font-weight: 300;
    line-height: 1.05;
    letter-spacing: -0.02em;
    font-size: clamp(30px, 4vw, 54px);
    color: var(--primary-color);
    margin-bottom: 12px;
}

.hero-lede {
    font-size: 16px;
    max-width: 72ch;
    color: var(--text-dark);
}

/* Main Content */
.main-content {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    gap: var(--spacing-md);
    flex: 1;
    padding: 0;
}

.panel {
    background-color: var(--surface-bg);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid #e5e7e7;
    box-shadow: var(--elevation-2);
}

.panel h2 {
    font-size: 12px;
    font-family: var(--font-display);
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-bottom: var(--spacing-md);
    color: #5e6060;
}

/* Inputs Panels */
.inputs-panel {
    flex: 1;
}

.input-section {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
    border-bottom: 1px solid var(--border-color);
}

.input-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.input-section h3 {
    font-size: 22px;
    font-family: var(--font-display);
    font-weight: 300;
    letter-spacing: -0.01em;
    margin-bottom: var(--spacing-md);
    color: var(--primary-color);
}

.input-group {
    display: flex;
    flex-direction: column;
    margin-bottom: var(--spacing-md);
}

.input-group label {
    font-size: 14px;
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
    color: var(--text-dark);
}

.input-field {
    padding: 10px var(--spacing-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-family: inherit;
    transition: border-color 0.2s ease;
}

.input-field:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.input-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

/* Results Panel */
.results-panel {
    flex: 1;
    grid-column: span 4;
    order: 5;
}

.combined-results-panel {
    grid-column: 1 / 5;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
}

.results-column h4 {
    font-size: 14px;
    font-family: var(--font-display);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--text-dark);
}

.results-section {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.total-subsidy-summary {
    text-align: center;
    padding: var(--spacing-lg) var(--spacing-md);
    margin-top: var(--spacing-lg);
    background-color: var(--bg-light);
    border-top: 2px solid var(--color-primary);
    border-radius: 4px;
}

.total-subsidy-summary p {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 16px;
    color: var(--text-dark);
    margin-bottom: var(--spacing-md);
}

.total-subsidy-summary span {
    font-family: var(--font-body);
    font-weight: 700;
    color: var(--color-primary);
}

.total-subsidy-summary .export-actions {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin: var(--spacing-md) 0;
}

.total-subsidy-summary .savings-text {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 18px;
    color: var(--text-dark);
    margin: var(--spacing-md) 0;
}

.total-subsidy-summary .savings-text span {
    font-family: var(--font-body);
    font-weight: 700;
    font-size: 20px;
    color: #2e7d32;
}

.total-subsidy-summary .footer-text {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: var(--spacing-md);
    margin-bottom: 0;
}

.results-section:last-of-type {
    border-bottom: none;
}

.results-section h3 {
    font-size: 22px;
    font-family: var(--font-display);
    font-weight: 300;
    letter-spacing: -0.01em;
    margin-bottom: var(--spacing-md);
    color: var(--primary-color);
}

.result-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
    font-size: 14px;
}

.result-item.highlight {
    background-color: var(--highlight-bg);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    margin: var(--spacing-md) 0;
    font-weight: 600;
}

.result-item.section-header {
    font-weight: 600;
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--border-color);
}

.result-item.sub-item {
    padding-left: var(--spacing-md);
    font-size: 13px;
    color: var(--text-secondary);
}

.result-label {
    color: var(--text-dark);
    font-weight: 500;
}

.result-value {
    font-weight: 600;
    color: var(--text-dark);
    font-family: 'Courier New', monospace;
}


.export-section {
    margin-top: var(--spacing-xl);
}

.export-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.export-actions .btn-reset {
    width: auto;
    min-width: 100px;
    padding: 8px 16px;
    font-size: 13px;
}

.export-actions .btn-export {
    width: auto;
    min-width: 120px;
    padding: 8px 16px;
    font-size: 13px;
    margin-top: 0;
}

/* Footer */
.footer {
    background-color: var(--surface-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--elevation-2);
    padding: var(--spacing-lg);
    max-width: var(--content-max);
    width: calc(100% - 2 * var(--layout-gutter));
    margin: var(--spacing-xl) auto var(--spacing-xl) auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
}

.footer p {
    margin: 0;
    font-size: 14px;
    color: var(--text-light);
    flex: 0 0 auto;
}

.footer .export-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    flex: 0 0 auto;
}

/* Tablet Responsive */
@media (max-width: 1400px) {
    .main-content {
        grid-template-columns: 1fr 1fr;
    }

    .er-results-panel {
        grid-column: 1 / 2;
    }

    .hm-results-panel {
        grid-column: 2 / 3;
    }
}

@media (max-width: 1024px) {
    .main-content {
        grid-template-columns: 1fr 1fr;
    }

    .er-results-panel {
        grid-column: 1 / 2;
    }

    .hm-results-panel {
        grid-column: 2 / 3;
    }

    .combined-results-panel {
        grid-column: 1 / 3;
    }

    .results-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .inputs-panel,
    .results-panel {
        flex: 1 1 100%;
    }

    .input-row {
        grid-template-columns: 1fr;
    }

    .results-panel {
        max-height: none;
    }

    .er-results-panel,
    .hm-results-panel {
        grid-column: auto;
    }
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .main-content {
        grid-template-columns: 1fr;
    }

    .results-panel {
        grid-column: auto;
    }

    .er-results-panel,
    .hm-results-panel {
        grid-column: auto;
    }

    .header {
        padding: var(--spacing-lg) var(--spacing-md) var(--spacing-md);
    }

    .hero {
        padding: var(--spacing-md) var(--spacing-sm);
        width: 100%;
        max-width: 100%;
    }

    .hero-inner {
        width: 100%;
        max-width: 100%;
    }

    .header-content {
        flex-direction: column;
        gap: var(--spacing-md);
        align-items: flex-start;
    }

    .header-logo {
        width: auto;
        justify-content: flex-start;
    }

    .btn-reset {
        width: 100%;
    }

    .header-actions {
        width: 100%;
        flex-direction: column;
        align-items: stretch;
    }

    .main-content {
        padding: var(--spacing-sm);
        gap: var(--spacing-sm);
        width: 100%;
        max-width: 100%;
    }

    .panel {
        padding: var(--spacing-md);
    }

    .panel h2 {
        font-size: 18px;
    }

    .export-actions {
        justify-content: stretch;
    }

    .export-actions .btn-reset,
    .export-actions .btn-export {
        width: 100%;
    }

    .input-section h3,
    .results-section h3 {
        font-size: 15px;
    }

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

    .result-item {
        font-size: 13px;
    }

    .result-column .result-value {
        font-size: 16px;
    }

    .footer {
        font-size: 11px;
        padding: var(--spacing-md);
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    .header-text h1 {
        font-size: 18px;
    }

    .header-text p {
        font-size: 12px;
    }

    .logo-badge {
        width: clamp(120px, 48vw, 214px);
        height: auto;
        max-width: none;
    }

    .panel h2 {
        font-size: 16px;
    }

    .input-group label {
        font-size: 13px;
    }

    .input-field {
        font-size: 16px;
        padding: 12px var(--spacing-sm);
    }

    .result-item {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }

    .result-value {
        align-self: flex-end;
        width: 100%;
        text-align: right;
    }
}

/* Print Styles */
@media print {
    body {
        background-color: white;
    }

    .header,
    .footer,
    .btn-reset,
    .btn-export {
        display: none;
    }

    .main-content {
        padding: 0;
        gap: 0;
    }

    .panel {
        box-shadow: none;
        page-break-inside: avoid;
    }
}