/* Retrofit Planner — Shared Styles
   All pages reference this file for consistent design.
   Fonts: Fraunces (display) + Plus Jakarta Sans (body)
   Updated: March 2026
*/

:root {
    --color-bg: #FAFAF7;
    --color-surface: #FFFFFF;
    --color-surface-alt: #F3F1EC;
    --color-border: #E2DFD6;
    --color-text: #1A1A17;
    --color-text-secondary: #6B6960;
    --color-text-tertiary: #9C9888;
    --color-accent: #2D6A4F;
    --color-accent-light: #40916C;
    --color-accent-bg: #EDF6F0;
    --color-accent-border: #B7E4C7;
    --color-highlight: #D4A843;
    --color-highlight-bg: #FFF8E7;
    --color-highlight-border: #F0D78C;
    --color-danger: #C1453B;
    --color-danger-bg: #FFF0EE;
    --font-display: 'Fraunces', Georgia, serif;
    --font-body: 'Plus Jakarta Sans', system-ui, sans-serif;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.06), 0 2px 4px rgba(0,0,0,0.04);
    --shadow-lg: 0 12px 32px rgba(0,0,0,0.08), 0 4px 8px rgba(0,0,0,0.04);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
}

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

body {
    font-family: var(--font-body);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--color-accent); text-decoration: underline; text-underline-offset: 2px; }
a:hover { color: var(--color-accent-light); }

/* ===== NAVIGATION ===== */
.nav {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: 0 24px;
    position: sticky;
    top: 0;
    z-index: 100;
}
.nav-inner {
    max-width: 1080px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
}
.nav-logo {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.15rem;
    color: var(--color-accent);
    text-decoration: none;
    letter-spacing: -0.02em;
}
.nav-links { display: flex; gap: 28px; list-style: none; }
.nav-links a {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color 0.2s;
}
.nav-links a:hover, .nav-links a.active { color: var(--color-accent); }

/* ===== BREADCRUMBS ===== */
.breadcrumbs {
    max-width: 1080px;
    margin: 0 auto;
    padding: 16px 24px 0;
    font-size: 0.8rem;
    color: var(--color-text-tertiary);
}
.breadcrumbs a { color: var(--color-text-secondary); text-decoration: none; }
.breadcrumbs a:hover { color: var(--color-accent); }
.breadcrumbs span { margin: 0 6px; }

/* ===== HERO ===== */
.hero {
    max-width: 1080px;
    margin: 0 auto;
    padding: 32px 24px 40px;
}
.hero.centered { text-align: center; padding: 80px 24px 60px; }
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--color-accent-bg);
    color: var(--color-accent);
    font-size: 0.8rem;
    font-weight: 600;
    padding: 6px 14px;
    border-radius: 100px;
    border: 1px solid var(--color-accent-border);
    margin-bottom: 20px;
    letter-spacing: 0.02em;
}
.hero-badge svg { width: 14px; height: 14px; }
.hero h1 {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 700;
    line-height: 1.18;
    letter-spacing: -0.03em;
    color: var(--color-text);
    margin-bottom: 16px;
    max-width: 680px;
}
.hero.centered h1 {
    font-size: clamp(2.2rem, 5vw, 3.2rem);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}
.hero p {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    max-width: 620px;
    line-height: 1.7;
}
.hero.centered p {
    max-width: 580px;
    margin: 0 auto;
}

/* ===== MAIN LAYOUT ===== */
.main {
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 24px 80px;
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 32px;
    align-items: start;
}
.main.single-col {
    grid-template-columns: 1fr;
    max-width: 780px;
}

/* ===== CALCULATOR CARD ===== */
.calc-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 36px;
    box-shadow: var(--shadow-sm);
}
.calc-card h2 {
    font-family: var(--font-display);
    font-size: 1.35rem;
    font-weight: 600;
    margin-bottom: 8px;
    letter-spacing: -0.02em;
}
.calc-card .subtitle {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    margin-bottom: 28px;
}

/* ===== FORM ELEMENTS ===== */
.form-group { margin-bottom: 24px; }
.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 8px;
}
.form-group .helper {
    font-size: 0.8rem;
    color: var(--color-text-tertiary);
    margin-top: 4px;
}
select, input[type="number"], input[type="text"], input[type="email"], textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 0.95rem;
    color: var(--color-text);
    background: var(--color-surface);
    transition: border-color 0.2s, box-shadow 0.2s;
    appearance: none;
    -webkit-appearance: none;
}
textarea { min-height: 120px; resize: vertical; }
select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%236B6960' d='M1.41 0L6 4.58 10.59 0 12 1.41l-6 6-6-6z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
}
select:focus, input:focus, textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-bg);
}
input[type="number"]::-webkit-inner-spin-button { opacity: 1; }

.btn-calculate {
    width: 100%;
    padding: 14px 24px;
    background: var(--color-accent);
    color: white;
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
    margin-top: 8px;
}
.btn-calculate:hover { background: var(--color-accent-light); }
.btn-calculate:active { transform: scale(0.99); }

/* ===== RESULTS ===== */
.results {
    display: none;
    margin-top: 36px;
    padding-top: 32px;
    border-top: 1px solid var(--color-border);
}
.results.visible { display: block; }
.results h3 {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 20px;
    letter-spacing: -0.01em;
}
.result-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 24px;
}
.result-item {
    background: var(--color-surface-alt);
    border-radius: var(--radius-sm);
    padding: 16px;
}
.result-item.highlight {
    background: var(--color-accent-bg);
    border: 1px solid var(--color-accent-border);
}
.result-item.saving {
    background: var(--color-highlight-bg);
    border: 1px solid var(--color-highlight-border);
}
.result-item .label {
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 4px;
}
.result-item .value {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: -0.02em;
}
.result-item.highlight .value { color: var(--color-accent); }
.result-item.saving .value { color: var(--color-highlight); }
.result-item .detail {
    font-size: 0.78rem;
    color: var(--color-text-tertiary);
    margin-top: 2px;
}
.result-full {
    background: var(--color-surface-alt);
    border-radius: var(--radius-sm);
    padding: 16px;
    margin-bottom: 12px;
}
.result-full .label {
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 4px;
}

/* Cost comparison bars */
.cost-bar-container {
    display: flex;
    gap: 12px;
    align-items: center;
    margin-top: 8px;
}
.cost-bar-label { font-size: 0.85rem; font-weight: 500; width: 90px; flex-shrink: 0; }
.cost-bar-wrap {
    flex: 1;
    background: var(--color-border);
    height: 28px;
    border-radius: 6px;
    overflow: hidden;
}
.cost-bar { height: 100%; border-radius: 6px; transition: width 0.6s ease; }
.cost-bar.gas, .cost-bar.current { background: var(--color-danger); }
.cost-bar.hp, .cost-bar.new { background: var(--color-accent); }
.cost-bar-amount { font-size: 0.85rem; font-weight: 600; width: 80px; text-align: right; flex-shrink: 0; }

/* ===== NEXT STEPS / CTA ===== */
.next-steps {
    background: var(--color-surface-alt);
    border-radius: var(--radius-md);
    padding: 24px;
    margin-top: 28px;
}
.next-steps h4 {
    font-family: var(--font-display);
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 16px;
}
.next-step-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    text-decoration: none;
    color: var(--color-text);
    margin-bottom: 8px;
    transition: border-color 0.2s;
}
.next-step-link:last-child { margin-bottom: 0; }
.next-step-link:hover { border-color: var(--color-accent-border); }
.next-step-link .step-icon {
    width: 36px; height: 36px;
    background: var(--color-accent-bg);
    border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
}
.next-step-link .step-icon svg { width: 18px; height: 18px; color: var(--color-accent); }
.next-step-link .step-text { flex: 1; }
.next-step-link .step-name { font-size: 0.88rem; font-weight: 600; }
.next-step-link .step-desc { font-size: 0.78rem; color: var(--color-text-tertiary); }
.next-step-link .step-arrow { color: var(--color-text-tertiary); }
.next-step-link .step-arrow svg { width: 16px; height: 16px; }

.cta-box {
    background: var(--color-accent);
    color: white;
    border-radius: var(--radius-md);
    padding: 24px;
    margin-top: 16px;
    text-align: center;
}
.cta-box h4 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 8px;
}
.cta-box p { font-size: 0.88rem; opacity: 0.9; margin-bottom: 16px; line-height: 1.5; }
.cta-box a {
    display: inline-block;
    background: white;
    color: var(--color-accent);
    font-weight: 600;
    font-size: 0.9rem;
    padding: 12px 28px;
    border-radius: var(--radius-sm);
    text-decoration: none;
    transition: transform 0.1s, box-shadow 0.2s;
}
.cta-box a:hover { transform: translateY(-1px); box-shadow: var(--shadow-md); }

/* ===== SIDEBAR ===== */
.sidebar {
    display: flex;
    flex-direction: column;
    gap: 20px;
    position: sticky;
    top: 80px;
}
.sidebar-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 24px;
    box-shadow: var(--shadow-sm);
}
.sidebar-card h3 {
    font-family: var(--font-display);
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 12px;
    letter-spacing: -0.01em;
}
.sidebar-card p, .sidebar-card li { font-size: 0.88rem; color: var(--color-text-secondary); line-height: 1.65; }
.sidebar-card ul { list-style: none; padding: 0; }
.sidebar-card ul li {
    padding: 8px 0;
    border-bottom: 1px solid var(--color-surface-alt);
    display: flex; align-items: baseline; gap: 8px;
}
.sidebar-card ul li:last-child { border-bottom: none; }
.sidebar-card ul li svg { width: 14px; height: 14px; color: var(--color-accent); flex-shrink: 0; margin-top: 2px; }
.sidebar-card.grant { background: var(--color-highlight-bg); border-color: var(--color-highlight-border); }
.sidebar-card.grant h3 { color: var(--color-highlight); }
.grant-amount {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-highlight);
    letter-spacing: -0.03em;
}
.grant-detail { font-size: 0.82rem; color: var(--color-text-secondary); margin-top: 4px; }

/* Sidebar tool links */
.tool-link {
    display: flex; align-items: center; gap: 10px;
    padding: 12px;
    background: var(--color-surface-alt);
    border-radius: var(--radius-sm);
    text-decoration: none;
    color: var(--color-text);
    transition: background 0.2s;
    margin-bottom: 8px;
}
.tool-link:last-child { margin-bottom: 0; }
.tool-link:hover { background: var(--color-accent-bg); }
.tool-link .t-icon {
    width: 36px; height: 36px;
    background: var(--color-accent-bg);
    border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
}
.tool-link .t-icon svg { width: 18px; height: 18px; color: var(--color-accent); }
.tool-link .tool-info { flex: 1; }
.tool-link .tool-name { font-size: 0.88rem; font-weight: 600; }
.tool-link .tool-desc { font-size: 0.75rem; color: var(--color-text-tertiary); }

/* ===== CONTENT SECTION ===== */
.content-section {
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 24px 80px;
}
.content-section article { max-width: 720px; }
.content-section h2 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
    margin-top: 40px;
}
.content-section h2:first-child { margin-top: 0; }
.content-section h3 { font-size: 1.1rem; margin-top: 24px; margin-bottom: 8px; }
.content-section p {
    color: var(--color-text-secondary);
    margin-bottom: 16px;
    font-size: 0.95rem;
}

/* In-content related link cards */
.related-links {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin: 32px 0;
}
.related-link-card {
    display: flex; align-items: center; gap: 12px;
    padding: 16px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    text-decoration: none;
    color: var(--color-text);
    transition: border-color 0.2s, box-shadow 0.2s;
}
.related-link-card:hover { border-color: var(--color-accent-border); box-shadow: var(--shadow-sm); }
.related-link-card .rl-icon {
    width: 40px; height: 40px;
    background: var(--color-accent-bg);
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
}
.related-link-card .rl-icon svg { width: 20px; height: 20px; color: var(--color-accent); }
.related-link-card .rl-text { flex: 1; }
.related-link-card .rl-name { font-size: 0.88rem; font-weight: 600; }
.related-link-card .rl-desc { font-size: 0.75rem; color: var(--color-text-tertiary); }

/* ===== TOOL CARDS GRID (homepage) ===== */
.tools-grid {
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 24px 80px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}
.tool-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px;
    text-decoration: none;
    color: var(--color-text);
    transition: border-color 0.2s, box-shadow 0.2s, transform 0.15s;
    display: flex;
    flex-direction: column;
}
.tool-card:hover { border-color: var(--color-accent-border); box-shadow: var(--shadow-md); transform: translateY(-2px); }
.tool-card .icon {
    width: 48px; height: 48px;
    background: var(--color-accent-bg);
    border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 20px;
}
.tool-card .icon svg { width: 24px; height: 24px; color: var(--color-accent); }
.tool-card.featured .icon { background: var(--color-accent); }
.tool-card.featured .icon svg { color: white; }
.tool-card h2 {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 8px;
    letter-spacing: -0.01em;
}
.tool-card p { font-size: 0.9rem; color: var(--color-text-secondary); line-height: 1.6; flex: 1; }
.tool-card .tag {
    display: inline-block;
    margin-top: 16px;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--color-accent);
    background: var(--color-accent-bg);
    padding: 4px 10px;
    border-radius: 100px;
}
.tool-card.coming-soon { opacity: 0.6; pointer-events: none; }
.tool-card.coming-soon .tag { color: var(--color-text-tertiary); background: var(--color-surface-alt); }

/* ===== TRUST SECTION ===== */
.trust-section {
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 24px 80px;
    text-align: center;
}
.trust-section h2 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 32px;
}
.trust-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
    text-align: left;
}
.trust-item { display: flex; gap: 12px; align-items: start; }
.trust-item .trust-icon {
    width: 40px; height: 40px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
}
.trust-item .trust-icon svg { width: 20px; height: 20px; color: var(--color-accent); }
.trust-item h3 { font-size: 0.9rem; font-weight: 600; margin-bottom: 4px; }
.trust-item p { font-size: 0.85rem; color: var(--color-text-secondary); line-height: 1.6; }

/* ===== GRANTS CHECKER SPECIFIC ===== */
.grant-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 24px;
    margin-bottom: 16px;
}
.grant-card.eligible { border-color: var(--color-accent-border); background: var(--color-accent-bg); }
.grant-card.ineligible { opacity: 0.5; }
.grant-card h3 { font-family: var(--font-display); font-size: 1.1rem; font-weight: 600; margin-bottom: 8px; }
.grant-card .grant-value {
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: 8px;
}
.grant-card p { font-size: 0.88rem; color: var(--color-text-secondary); }

/* ===== STATIC PAGE CONTENT ===== */
.page-content {
    max-width: 720px;
    margin: 0 auto;
    padding: 48px 24px 80px;
}
.page-content h1 {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 3.5vw, 2.4rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    margin-bottom: 16px;
    line-height: 1.2;
}
.page-content h2 {
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-top: 40px;
    margin-bottom: 12px;
}
.page-content h3 { font-size: 1.1rem; font-weight: 600; margin-top: 28px; margin-bottom: 8px; }
.page-content p {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    margin-bottom: 16px;
    line-height: 1.7;
}
.page-content ul, .page-content ol {
    margin-bottom: 16px;
    padding-left: 24px;
}
.page-content li {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    margin-bottom: 8px;
    line-height: 1.6;
}
.page-content .lead {
    font-size: 1.1rem;
    color: var(--color-text);
    margin-bottom: 24px;
}

/* ===== FOOTER ===== */
.footer {
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    padding: 48px 24px;
}
.footer-inner {
    max-width: 1080px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.2fr 1fr 1fr 1fr;
    gap: 40px;
}
.footer-brand {
    font-family: var(--font-display);
    font-weight: 700;
    color: var(--color-accent);
    font-size: 1rem;
    margin-bottom: 8px;
}
.footer-about { font-size: 0.82rem; color: var(--color-text-tertiary); line-height: 1.6; }
.footer-col h4 {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-text-secondary);
    margin-bottom: 12px;
}
.footer-col a {
    display: block;
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    text-decoration: none;
    padding: 4px 0;
}
.footer-col a:hover { color: var(--color-accent); }
.footer .attribution {
    max-width: 1080px;
    margin: 24px auto 0;
    padding-top: 24px;
    border-top: 1px solid var(--color-border);
    font-size: 0.72rem;
    color: var(--color-text-tertiary);
    text-align: center;
    line-height: 1.6;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 800px) {
    .main { grid-template-columns: 1fr; }
    .sidebar { position: static; }
    .nav-links { display: none; }
    .calc-card { padding: 24px; }
    .result-grid { grid-template-columns: 1fr; }
    .related-links { grid-template-columns: 1fr; }
    .tools-grid { grid-template-columns: 1fr; }
    .footer-inner { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 500px) {
    .footer-inner { grid-template-columns: 1fr; }
}