/* CalcolaMutuo.it — Minimal Finance Design System */

/* ── Self-hosted Inter font (latin subset) ── */
@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 400;
    font-display: swap;
    src: url('/assets/fonts/inter-400.woff2') format('woff2');
    unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 600;
    font-display: swap;
    src: url('/assets/fonts/inter-600.woff2') format('woff2');
    unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 700;
    font-display: swap;
    src: url('/assets/fonts/inter-700.woff2') format('woff2');
    unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
    --primary: #0d9488;
    --primary-light: #14b8a6;
    --primary-dark: #0f766e;
    --primary-50: #f0fdfa;
    --primary-100: #ccfbf1;
    --accent: #0d9488;
    --cta-bg: #0d9488;
    --cta-hover: #0f766e;
    --gray-50: #fafafa;
    --gray-100: #f5f5f5;
    --gray-200: #e5e5e5;
    --gray-300: #d4d4d4;
    --gray-400: #a3a3a3;
    --gray-500: #737373;
    --gray-600: #525252;
    --gray-700: #404040;
    --gray-800: #262626;
    --gray-900: #171717;
    --white: #ffffff;
    --danger: #ef4444;
    --success: #10b981;
    --radius: 12px;
    --radius-lg: 16px;
    --radius-pill: 100px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,.04);
    --shadow: 0 1px 3px rgba(0,0,0,.06);
    --shadow-md: 0 4px 12px rgba(0,0,0,.06);
    --shadow-lg: 0 8px 24px rgba(0,0,0,.08);
    --max-width: 820px;
    --transition: 200ms ease;
}

/* Reset & base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--gray-800);
    background: var(--white);
    line-height: 1.75;
    font-size: 17px;
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary-dark); }
ul, ol { padding-left: 1.25em; }

/* ── HEADER ── */
.site-header {
    background: var(--white);
    border-bottom: 1px solid var(--gray-100);
    position: sticky;
    top: 0;
    z-index: 100;
}
.header-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}
.site-logo {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--gray-900);
    display: flex;
    align-items: center;
    gap: .5rem;
    letter-spacing: -.02em;
}
.site-logo:hover { color: var(--primary); }
.site-logo svg { width: 22px; height: 22px; color: var(--primary); }

/* Nav */
.site-nav { display: flex; align-items: center; gap: .125rem; }
.site-nav a {
    padding: .5rem .875rem;
    font-size: .875rem;
    font-weight: 500;
    color: var(--gray-500);
    border-radius: var(--radius-pill);
    transition: all var(--transition);
    position: relative;
}
.site-nav a:hover {
    color: var(--gray-900);
}
.site-nav a.active {
    color: var(--primary);
    background: var(--primary-50);
}

/* Dropdown blog */
.nav-dropdown { position: relative; }
.nav-dropdown-toggle {
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: .25rem;
    padding: .5rem .875rem;
    font-size: .875rem;
    font-weight: 500;
    color: var(--gray-500);
    border-radius: var(--radius-pill);
    border: none;
    background: none;
    font-family: inherit;
    transition: all var(--transition);
}
.nav-dropdown-toggle:hover { color: var(--gray-900); }
.nav-dropdown-toggle svg { width: 14px; height: 14px; transition: transform var(--transition); }
.nav-dropdown.open .nav-dropdown-toggle svg { transform: rotate(180deg); }
.nav-dropdown-menu {
    display: none;
    position: absolute;
    right: 0;
    top: calc(100% + 8px);
    background: var(--white);
    border: 1px solid var(--gray-100);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    min-width: 200px;
    padding: .375rem;
    z-index: 200;
}
.nav-dropdown.open .nav-dropdown-menu { display: block; }
.nav-dropdown-menu a {
    display: block;
    padding: .5rem .75rem;
    font-size: .875rem;
    color: var(--gray-600);
    border-radius: 8px;
}
.nav-dropdown-menu a:hover { background: var(--primary-50); color: var(--primary); }
.nav-dropdown-menu .dropdown-cat {
    font-size: .7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: var(--gray-400);
    padding: .75rem .75rem .25rem;
}
.nav-dropdown-menu .dropdown-cat:first-child { padding-top: .375rem; }

/* Mobile nav toggle */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    padding: .5rem;
    cursor: pointer;
    color: var(--gray-600);
}
.nav-toggle svg { width: 22px; height: 22px; }

/* ── HERO (homepage) ── */
.hero {
    background: var(--white);
    color: var(--gray-900);
    padding: 3.5rem 1.5rem 2rem;
    text-align: center;
    border-bottom: 1px solid var(--gray-100);
}
.hero h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: .5rem;
    letter-spacing: -.03em;
    line-height: 1.15;
    color: var(--gray-900);
}
.hero p {
    font-size: 1.1rem;
    color: var(--gray-500);
    max-width: 480px;
    margin: 0 auto;
    font-weight: 400;
}

.update-badge {
    display: inline-block;
    margin-top: .5rem;
    padding: .15rem .6rem;
    background: #e8f4fe;
    color: #0b5ea8;
    border-radius: 12px;
    font-size: .78rem;
    font-style: normal;
    font-weight: 600;
}

/* ── PAGE HEADER (non-homepage) ── */
.page-header {
    background: var(--white);
    border-bottom: 1px solid var(--gray-100);
    padding: 2.5rem 1.5rem 2rem;
}
.page-header-inner {
    max-width: var(--max-width);
    margin: 0 auto;
}
.page-header h1 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--gray-900);
    letter-spacing: -.02em;
    line-height: 1.2;
    margin-bottom: .375rem;
}
.page-header .subtitle {
    color: var(--gray-400);
    font-size: 1.05rem;
    font-weight: 400;
}

/* ── BREADCRUMB ── */
.breadcrumb {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: .75rem 1.5rem;
    font-size: .8rem;
    color: var(--gray-400);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: .35rem;
}
.breadcrumb a { color: var(--gray-400); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { color: var(--gray-300); }

/* ── MAIN CONTENT ── */
.main {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 2rem 1.5rem 3rem;
}

/* Card/section */
.card {
    background: var(--white);
    border: 1px solid var(--gray-100);
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    margin-bottom: 1.5rem;
}
.card h2 {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 1rem;
    letter-spacing: -.01em;
}
.card h3 {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--gray-800);
    margin: 1.25rem 0 .5rem;
}
.card p { margin-bottom: .75rem; color: var(--gray-600); }
.card ul, .card ol { margin-bottom: .75rem; color: var(--gray-600); }
.card li { margin-bottom: .35rem; }
.card strong { color: var(--gray-800); }

/* ── CALCULATOR TABS ── */
.calc-tabs {
    display: flex;
    gap: .25rem;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--gray-100);
    padding-bottom: .5rem;
}
.calc-tab {
    padding: .5rem 1rem;
    font-size: .85rem;
    font-weight: 500;
    color: var(--gray-400);
    background: none;
    border: none;
    border-radius: var(--radius-pill);
    cursor: pointer;
    font-family: inherit;
    transition: all var(--transition);
}
.calc-tab:hover { color: var(--gray-700); }
.calc-tab.active {
    color: var(--primary);
    background: var(--primary-50);
}

/* Duration unit toggle */
.durata-unit-toggle {
    display: inline-flex;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-pill);
    overflow: hidden;
}
.durata-unit {
    padding: .25rem .625rem;
    font-size: .7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .04em;
    color: var(--gray-400);
    background: var(--white);
    border: none;
    cursor: pointer;
    font-family: inherit;
    transition: all var(--transition);
}
.durata-unit.active {
    color: var(--white);
    background: var(--primary);
}
.durata-unit:not(.active):hover {
    color: var(--gray-600);
}

/* ── CALCULATOR ── */
.calc-container {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    margin-bottom: 1.5rem;
}
.calc-container h2 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 1.5rem;
}
.calc-form { display: flex; flex-direction: column; gap: 1.5rem; }
.calc-field label {
    display: block;
    font-size: .8rem;
    font-weight: 500;
    color: var(--gray-500);
    margin-bottom: .375rem;
    text-transform: uppercase;
    letter-spacing: .04em;
}
.calc-field input[type="text"],
.calc-field input[type="number"] {
    width: 100%;
    padding: .75rem 1rem;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    font-size: 1rem;
    font-family: inherit;
    color: var(--gray-800);
    background: var(--white);
    transition: border-color var(--transition);
}
.calc-field input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(13,148,136,.1);
}
.calc-field input[type="range"] {
    width: 100%;
    margin-top: .5rem;
    -webkit-appearance: none;
    height: 4px;
    background: var(--gray-200);
    border-radius: 2px;
    outline: none;
}
.calc-field input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    background: var(--primary);
    border-radius: 50%;
    cursor: pointer;
    border: 3px solid var(--white);
    box-shadow: 0 1px 4px rgba(0,0,0,.15);
}
.calc-field input[type="range"]::-moz-range-thumb {
    width: 20px;
    height: 20px;
    background: var(--primary);
    border-radius: 50%;
    cursor: pointer;
    border: 3px solid var(--white);
    box-shadow: 0 1px 4px rgba(0,0,0,.15);
}

.calc-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .5rem;
    background: var(--primary);
    color: var(--white);
    font-size: 1rem;
    font-weight: 600;
    font-family: inherit;
    padding: .875rem 1.75rem;
    border: none;
    border-radius: var(--radius-pill);
    cursor: pointer;
    transition: background var(--transition), transform var(--transition);
    width: 100%;
}
.calc-btn:hover { background: var(--primary-dark); }
.calc-btn:active { transform: scale(.98); }
.calc-btn svg { width: 18px; height: 18px; }

/* Results */
.calc-results {
    display: none;
    background: var(--primary-50);
    border: 1px solid var(--primary-100);
    border-radius: var(--radius-lg);
    padding: 2rem;
    margin-bottom: 1.5rem;
}
.calc-results.visible { display: block; }
.calc-results .result-hero {
    text-align: center;
    padding-bottom: 1.25rem;
    border-bottom: 1px solid var(--primary-100);
    margin-bottom: 1.25rem;
}
.calc-results .result-hero .label {
    font-size: .8rem;
    font-weight: 500;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: .04em;
    margin-bottom: .375rem;
}
.calc-results .result-hero .value {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: -.03em;
    line-height: 1;
}
.calc-results .result-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}
.calc-results .result-item { padding: .5rem 0; }
.calc-results .result-item .label {
    font-size: .75rem;
    color: var(--gray-400);
    text-transform: uppercase;
    letter-spacing: .03em;
}
.calc-results .result-item .value {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--gray-800);
}

/* Email form */
.email-form-section {
    display: none;
    background: var(--white);
    border: 1px solid var(--gray-100);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}
.email-form-section.visible { display: block; }
.email-form-section h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: .75rem;
    color: var(--gray-800);
}
.email-row {
    display: flex;
    gap: .5rem;
    margin-bottom: .75rem;
}
.email-row input[type="email"] {
    flex: 1;
    padding: .75rem 1rem;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    font-size: .95rem;
    font-family: inherit;
}
.email-row input[type="email"]:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(13,148,136,.1);
}
.email-row button {
    padding: .75rem 1.25rem;
    background: var(--primary);
    color: var(--white);
    border: none;
    border-radius: var(--radius-pill);
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    white-space: nowrap;
    transition: background var(--transition);
}
.email-row button:hover { background: var(--primary-dark); }
.checkbox-row {
    display: flex;
    align-items: flex-start;
    gap: .5rem;
    font-size: .85rem;
    color: var(--gray-500);
}
.checkbox-row input[type="checkbox"] { margin-top: .2rem; accent-color: var(--primary); }
.checkbox-row a { color: var(--primary); }
.email-status { margin-top: .5rem; font-size: .9rem; }
.email-status.success { color: var(--success); }
.email-status.error { color: var(--danger); }

/* ── COMPARE MODE ── */
.calc-compare {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}
.calc-compare .scenario {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
}
.calc-compare .scenario h3 {
    font-size: .9rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: .03em;
}
.compare-results {
    display: none;
    margin-bottom: 1.5rem;
}
.compare-results.visible { display: block; }
.compare-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--gray-100);
}
.compare-table th {
    background: var(--gray-900);
    color: var(--white);
    padding: .75rem 1rem;
    font-size: .75rem;
    font-weight: 600;
    text-align: left;
    text-transform: uppercase;
    letter-spacing: .04em;
}
.compare-table td {
    padding: .75rem 1rem;
    border-bottom: 1px solid var(--gray-100);
    font-size: .9rem;
}
.compare-table tr:last-child td { border-bottom: none; }
.compare-table .highlight-cell {
    font-weight: 700;
    color: var(--primary);
}
.compare-table .diff-positive { color: var(--success); font-weight: 600; }
.compare-table .diff-negative { color: var(--danger); font-weight: 600; }

/* ── GUIDED MODE ── */
.calc-guided .step {
    display: none;
    padding: 1.75rem;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    margin-bottom: 1rem;
}
.calc-guided .step.active { display: block; }
.calc-guided .step-indicator {
    display: flex;
    align-items: center;
    gap: .625rem;
    margin-bottom: 1rem;
}
.calc-guided .step-number {
    width: 28px;
    height: 28px;
    background: var(--primary);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: .8rem;
    font-weight: 700;
}
.calc-guided .step-title {
    font-weight: 600;
    color: var(--gray-800);
}
.calc-guided .step-explain {
    font-size: .9rem;
    color: var(--gray-400);
    margin-bottom: 1rem;
    line-height: 1.6;
}
.calc-guided .step-nav {
    display: flex;
    justify-content: space-between;
    margin-top: 1.25rem;
}
.btn-secondary {
    padding: .75rem 1.5rem;
    background: var(--white);
    color: var(--gray-600);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-pill);
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    transition: all var(--transition);
}
.btn-secondary:hover { border-color: var(--gray-300); color: var(--gray-800); }

/* ── FAQ (native details/summary) ── */
.faq-section { margin-bottom: 1.5rem; }
.faq-item {
    border-bottom: 1px solid var(--gray-100);
    padding: 1.125rem 0;
}
.faq-item:last-child { border-bottom: none; }
.faq-question {
    font-size: .95rem;
    font-weight: 600;
    color: var(--gray-800);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    list-style: none;
}
.faq-question::-webkit-details-marker { display: none; }
.faq-question::after {
    content: '+';
    font-size: 1.25rem;
    font-weight: 300;
    color: var(--gray-300);
    flex-shrink: 0;
    margin-left: 1rem;
    transition: transform var(--transition);
}
.faq-item[open] > .faq-question::after { content: '\2212'; color: var(--primary); }
.faq-item .faq-answer {
    padding-top: .5rem;
    font-size: .9rem;
    color: var(--gray-500);
    line-height: 1.7;
}

/* ── ADSENSE SLOT ── */
.adsense-slot {
    margin: 2rem 0;
    text-align: center;
    min-height: 100px;
}

/* ── AFFILIATE CTA ── */
.affiliate-cta {
    background: var(--primary-50);
    border: 1px solid var(--primary-100);
    border-radius: var(--radius-lg);
    padding: 1.25rem 1.75rem;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}
.affiliate-cta .cta-text {
    font-weight: 600;
    color: var(--gray-800);
    font-size: .95rem;
}
.affiliate-cta .cta-text small {
    display: block;
    font-weight: 400;
    font-size: .8rem;
    color: var(--gray-500);
    margin-top: .25rem;
}
.affiliate-cta .cta-button {
    background: var(--primary);
    color: var(--white);
    padding: .625rem 1.5rem;
    border-radius: var(--radius-pill);
    font-weight: 600;
    font-size: .9rem;
    white-space: nowrap;
    transition: background var(--transition);
}
.affiliate-cta .cta-button:hover { background: var(--primary-dark); color: var(--white); }

.affiliate-cta-full {
    background: var(--gray-900);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    margin-bottom: 1.5rem;
    text-align: center;
    color: var(--white);
}
.affiliate-cta-full h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: .5rem;
    color: var(--white);
}
.affiliate-cta-full p {
    font-size: .95rem;
    opacity: .7;
    margin-bottom: 1.25rem;
    color: var(--white);
}
.affiliate-cta-full .cta-button {
    display: inline-block;
    background: var(--primary);
    color: var(--white);
    padding: .875rem 2.5rem;
    border-radius: var(--radius-pill);
    font-weight: 600;
    font-size: 1rem;
    transition: background var(--transition);
}
.affiliate-cta-full .cta-button:hover { background: var(--primary-light); color: var(--white); }

/* ── ARTICLE CARD (in-page) ── */
.article-card {
    background: var(--white);
    border: 1px solid var(--gray-100);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
    margin-bottom: 1rem;
    transition: border-color var(--transition);
}
.article-card:hover { border-color: var(--primary-100); }
.article-card h3 {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: .25rem;
}
.article-card h3 a { color: var(--gray-900); }
.article-card h3 a:hover { color: var(--primary); }
.article-card .article-meta {
    font-size: .8rem;
    color: var(--gray-400);
    margin-bottom: .5rem;
}
.article-card .article-excerpt {
    font-size: .9rem;
    color: var(--gray-500);
    line-height: 1.6;
}

/* ── BLOG INDEX ── */
.blog-featured {
    display: block;
    background: var(--gray-900);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    margin-bottom: 2rem;
    color: var(--white);
    transition: transform var(--transition);
}
.blog-featured:hover {
    transform: translateY(-2px);
    color: var(--white);
}
.blog-featured-badge {
    display: inline-block;
    background: var(--primary);
    padding: .25rem .875rem;
    border-radius: var(--radius-pill);
    font-size: .7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .05em;
    margin-bottom: 1rem;
}
.blog-featured h2 {
    font-size: 1.625rem;
    font-weight: 700;
    margin-bottom: .625rem;
    color: var(--white);
    letter-spacing: -.02em;
    line-height: 1.25;
}
.blog-featured p {
    font-size: .95rem;
    opacity: .65;
    line-height: 1.6;
    margin-bottom: .75rem;
    color: var(--white);
}
.blog-featured-meta {
    font-size: .85rem;
    opacity: .5;
    font-weight: 500;
}

/* Blog filters */
.blog-filters {
    display: flex;
    flex-wrap: wrap;
    gap: .5rem;
    margin-bottom: 2rem;
}
.blog-filter {
    display: inline-block;
    padding: .5rem 1.125rem;
    border-radius: var(--radius-pill);
    font-size: .85rem;
    font-weight: 500;
    color: var(--gray-500);
    background: var(--white);
    border: 1px solid var(--gray-200);
    transition: all var(--transition);
}
.blog-filter:hover {
    color: var(--primary);
    border-color: var(--primary-100);
}
.blog-filter.active {
    color: var(--white);
    background: var(--gray-900);
    border-color: var(--gray-900);
}

/* Blog grid */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}
.blog-card {
    display: flex;
    flex-direction: column;
    background: var(--white);
    border: 1px solid var(--gray-100);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    transition: border-color var(--transition);
    color: var(--gray-600);
}
.blog-card:hover {
    border-color: var(--primary);
    color: var(--gray-600);
}
.blog-card-cat {
    font-size: .7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: var(--primary);
    margin-bottom: .5rem;
}
.blog-card h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: .5rem;
    line-height: 1.3;
}
.blog-card p {
    font-size: .85rem;
    color: var(--gray-400);
    line-height: 1.5;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.blog-card-meta {
    font-size: .75rem;
    color: var(--gray-300);
    margin-top: .75rem;
    padding-top: .75rem;
    border-top: 1px solid var(--gray-100);
}

/* ── TABLE ── */
.data-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
    font-size: .9rem;
}
.data-table th {
    background: var(--gray-900);
    color: var(--white);
    padding: .75rem 1rem;
    text-align: left;
    font-weight: 600;
    font-size: .75rem;
    text-transform: uppercase;
    letter-spacing: .04em;
}
.data-table td {
    padding: .75rem 1rem;
    border-bottom: 1px solid var(--gray-100);
}
.data-table tr:nth-child(even) { background: var(--gray-50); }
.data-table .number { text-align: right; font-variant-numeric: tabular-nums; }

/* ── AMORTIZATION TABLE (Phase 2) ── */
.amort-table-wrap {
    overflow-x: auto;
    margin: 1rem 0;
    border: 1px solid var(--gray-100);
    border-radius: var(--radius-lg);
}
.amort-table {
    width: 100%;
    border-collapse: collapse;
    font-size: .85rem;
    font-variant-numeric: tabular-nums;
}
.amort-table th {
    background: var(--gray-900);
    color: var(--white);
    padding: .625rem .75rem;
    text-align: right;
    font-weight: 600;
    font-size: .7rem;
    text-transform: uppercase;
    letter-spacing: .04em;
    position: sticky;
    top: 0;
}
.amort-table th:first-child { text-align: center; }
.amort-table td {
    padding: .5rem .75rem;
    border-bottom: 1px solid var(--gray-100);
    text-align: right;
}
.amort-table td:first-child { text-align: center; color: var(--gray-400); }
.amort-table tr:nth-child(even) { background: var(--gray-50); }
.amort-table .col-capital { color: var(--primary); font-weight: 600; }
.amort-table .col-interest { color: var(--gray-500); }

/* Amortization bar (French visualization) */
.amort-bar {
    display: flex;
    height: 6px;
    border-radius: 3px;
    overflow: hidden;
    margin: .25rem 0;
}
.amort-bar-capital { background: var(--primary); }
.amort-bar-interest { background: var(--gray-300); }

/* CSV export button */
.btn-export {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    padding: .625rem 1.25rem;
    background: var(--white);
    color: var(--gray-600);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-pill);
    font-size: .85rem;
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    transition: all var(--transition);
}
.btn-export:hover { border-color: var(--primary); color: var(--primary); }
.btn-export svg { width: 16px; height: 16px; }

/* ── PIE CHART (interests page) ── */
.pie-chart-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    padding: 1.5rem 0;
}
.pie-chart-canvas { width: 160px; height: 160px; }
.pie-chart-legend {
    display: flex;
    flex-direction: column;
    gap: .75rem;
}
.pie-chart-legend-item {
    display: flex;
    align-items: center;
    gap: .5rem;
    font-size: .9rem;
    color: var(--gray-600);
}
.pie-chart-legend-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    flex-shrink: 0;
}
.pie-chart-legend-value {
    font-weight: 700;
    color: var(--gray-800);
    display: block;
}

/* ── TAEG comparison ── */
.taeg-comparison {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin: 1rem 0;
}
.taeg-box {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    text-align: center;
}
.taeg-box.highlight {
    border-color: var(--primary);
    background: var(--primary-50);
}
.taeg-box .taeg-label {
    font-size: .75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .04em;
    color: var(--gray-400);
    margin-bottom: .5rem;
}
.taeg-box .taeg-value {
    font-size: 2rem;
    font-weight: 800;
    color: var(--gray-900);
    letter-spacing: -.02em;
}
.taeg-box.highlight .taeg-value { color: var(--primary); }
.taeg-box .taeg-sub {
    font-size: .85rem;
    color: var(--gray-500);
    margin-top: .25rem;
}

/* ── Box citazione fonte ── */
.source-box {
    border-left: 3px solid var(--primary);
    background: var(--primary-50);
    border-radius: 0 var(--radius) var(--radius) 0;
    padding: .9rem 1.1rem;
    margin: 1.1rem 0;
    font-size: .93rem;
    line-height: 1.6;
}
.source-box p { margin: 0 0 .5rem; }
.source-box p:last-child { margin-bottom: 0; }

/* ── Grafico serie storica tassi (SVG generato lato server) ── */
.rate-chart-wrap {
    margin: 1.25rem 0;
    padding: 0;
}
.rate-chart {
    display: block;
    width: 100%;
    height: auto;
    overflow: visible;
}
.rate-chart .grid {
    stroke: var(--gray-200);
    stroke-width: 1;
}
.rate-chart .ax {
    fill: var(--gray-500);
    font-size: 12px;
    font-family: inherit;
}
.rate-chart .line { fill: none; }
/* Colori espliciti e distinti: --accent nel tema coincide con --primary,
   quindi usarlo qui renderebbe indistinguibili due linee su tre */
.rate-chart .l-tot { stroke: var(--primary); }
.rate-chart .l-var { stroke: #d97706; opacity: .85; }
.rate-chart .l-fix { stroke: #6366f1; opacity: .85; stroke-dasharray: 5 3; }
.rate-chart .dot {
    fill: var(--primary);
    stroke: var(--white);
    stroke-width: 2;
}
.rate-chart .now {
    fill: var(--gray-900);
    font-size: 13px;
    font-weight: 700;
    font-family: inherit;
}
.chart-legend {
    display: flex;
    flex-wrap: wrap;
    gap: .35rem 1.1rem;
    list-style: none;
    margin: .6rem 0 .4rem;
    padding: 0;
    font-size: .85rem;
    color: var(--gray-600);
}
.chart-legend li {
    display: flex;
    align-items: center;
    gap: .4rem;
}
.chart-legend .key {
    width: 1.1rem;
    height: 3px;
    border-radius: 2px;
    flex: none;
}
.chart-legend .key.l-tot { background: var(--primary); }
.chart-legend .key.l-var { background: #d97706; }
.chart-legend .key.l-fix { background: #6366f1; }
.rate-chart-wrap figcaption {
    font-size: .8rem;
    color: var(--gray-500);
    line-height: 1.5;
}

/* ── Barre inline nelle tabelle dati (serie storiche) ── */
.data-table .bar-cell {
    width: 40%;
    min-width: 90px;
    vertical-align: middle;
}
.data-table .bar {
    display: block;
    height: .6rem;
    border-radius: var(--radius-pill);
    background: var(--primary);
    opacity: .75;
    min-width: 2px;
}

/* ── TAEG: confronto offerte ── */
.calc-hint {
    font-size: .9rem;
    color: var(--gray-500);
    margin: 0 0 1rem;
    line-height: 1.5;
}
.offers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 1rem;
    margin: 1rem 0;
}
.offer-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 1rem;
}
.offer-card[hidden] { display: none; }
.offer-head {
    display: flex;
    align-items: center;
    gap: .5rem;
    margin-bottom: .75rem;
}
.offer-head input {
    flex: 1;
    min-width: 0;
    font-weight: 700;
    font-size: 1rem;
    padding: .4rem .55rem;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    background: var(--gray-50);
    color: var(--gray-900);
}
.offer-remove {
    flex: none;
    width: 1.75rem;
    height: 1.75rem;
    line-height: 1;
    font-size: 1.25rem;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    background: var(--white);
    color: var(--gray-500);
    cursor: pointer;
}
.offer-remove:hover { color: var(--danger); border-color: var(--danger); }
.offer-field { margin-bottom: .6rem; }
.offer-field label {
    display: block;
    font-size: .78rem;
    color: var(--gray-500);
    margin-bottom: .2rem;
}
.offer-field input {
    width: 100%;
    padding: .45rem .55rem;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    font-size: .95rem;
    color: var(--gray-900);
    background: var(--white);
}
.offer-actions { margin: .25rem 0 1rem; }
.offer-add {
    background: none;
    border: 1px dashed var(--gray-300);
    border-radius: var(--radius);
    padding: .5rem .9rem;
    color: var(--gray-600);
    font-size: .9rem;
    cursor: pointer;
    transition: var(--transition);
}
.offer-add:hover { border-color: var(--primary); color: var(--primary); }
.offer-add[hidden] { display: none; }

.taeg-winner {
    background: var(--primary-50);
    border: 1px solid var(--primary);
    border-radius: var(--radius-lg);
    padding: 1rem 1.25rem;
    margin-bottom: 1rem;
    font-size: 1.02rem;
    line-height: 1.55;
    color: var(--gray-900);
}
.offers-results {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1rem;
}
.offer-result {
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 1rem;
    background: var(--white);
}
.offer-result.is-best { border-color: var(--primary); box-shadow: var(--shadow-sm); }
.offer-result-head {
    display: flex;
    align-items: center;
    gap: .5rem;
    margin-bottom: .75rem;
    flex-wrap: wrap;
}
.offer-rank {
    flex: none;
    width: 1.6rem;
    height: 1.6rem;
    display: grid;
    place-items: center;
    border-radius: 50%;
    background: var(--gray-100);
    color: var(--gray-600);
    font-size: .82rem;
    font-weight: 700;
}
.offer-result.is-best .offer-rank { background: var(--primary); color: var(--white); }
.offer-name { font-weight: 700; color: var(--gray-900); }
.offer-badge {
    font-size: .7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .04em;
    color: var(--primary);
    background: var(--primary-50);
    border-radius: var(--radius-pill);
    padding: .15rem .5rem;
}
.offer-result-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: .5rem .75rem;
}
.offer-result-grid > div { display: flex; flex-direction: column; }
.offer-result-grid .label {
    font-size: .72rem;
    text-transform: uppercase;
    letter-spacing: .03em;
    color: var(--gray-400);
}
.offer-result-grid .value { font-size: .98rem; color: var(--gray-800); }
.offer-result-grid .value.strong { font-weight: 700; color: var(--gray-900); }
.offer-result-grid .value.negative { color: var(--danger); }

/* ── SALARY CALCULATOR (reverse) ── */
.salary-result-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
    margin: 1rem 0;
}
.salary-result-card {
    background: var(--white);
    border: 1px solid var(--gray-100);
    border-radius: var(--radius);
    padding: 1rem;
    text-align: center;
}
.salary-result-card .duration {
    font-size: .75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .03em;
    color: var(--gray-400);
    margin-bottom: .375rem;
}
.salary-result-card .amount {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gray-900);
}

/* ── FOOTER ── */
.site-footer {
    background: var(--gray-900);
    color: var(--gray-400);
    padding: 2.5rem 1.5rem;
    margin-top: 2rem;
}
.footer-inner {
    max-width: var(--max-width);
    margin: 0 auto;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 2rem;
}
.footer-col {
    display: flex;
    flex-direction: column;
    gap: .375rem;
}
.footer-brand {
    font-weight: 700;
    font-size: .95rem;
    color: var(--white);
    margin-bottom: .25rem;
}
.footer-copy { font-size: .8rem; color: var(--gray-500); }
.footer-heading {
    font-size: .75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: var(--gray-500);
    margin-bottom: .25rem;
}
.footer-col a {
    color: var(--gray-400);
    font-size: .85rem;
    transition: color var(--transition);
}
.footer-col a:hover { color: var(--white); }

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
    body { font-size: 16px; }
    .header-inner { height: 56px; padding: 0 1rem; }
    .site-nav {
        display: none;
        position: absolute;
        top: 56px;
        left: 0;
        right: 0;
        background: var(--white);
        border-bottom: 1px solid var(--gray-100);
        flex-direction: column;
        padding: .5rem;
        box-shadow: var(--shadow-lg);
    }
    .site-nav.open { display: flex; }
    .nav-toggle { display: flex; }
    .nav-dropdown-menu {
        position: static;
        box-shadow: none;
        border: none;
        background: var(--gray-50);
        border-radius: var(--radius);
    }

    .hero { padding: 2.5rem 1rem 1.5rem; }
    .hero h1 { font-size: 1.75rem; }
    .hero p { font-size: .95rem; }
    .page-header { padding: 2rem 1rem 1.5rem; }
    .page-header h1 { font-size: 1.5rem; }
    .main { padding: 1.5rem 1rem 2.5rem; }

    .calc-tabs { flex-wrap: wrap; }
    .calc-tab { font-size: .8rem; padding: .375rem .75rem; }
    .calc-results .result-hero .value { font-size: 2.25rem; }
    .calc-results .result-grid { grid-template-columns: 1fr; }
    .calc-compare { grid-template-columns: 1fr; }

    .affiliate-cta { flex-direction: column; text-align: center; }

    .footer-grid { grid-template-columns: 1fr 1fr; gap: 1.5rem; }
    .footer-col:first-child { grid-column: 1 / -1; text-align: center; }

    .email-row { flex-direction: column; }
    .blog-grid { grid-template-columns: 1fr; }
    .blog-featured h2 { font-size: 1.35rem; }
    .blog-featured { padding: 1.75rem; }

    .pie-chart-wrap { flex-direction: column; }
    .taeg-comparison { grid-template-columns: 1fr; }
    .offers-grid { grid-template-columns: 1fr; }
    .data-table .bar-cell { width: 30%; min-width: 60px; }
    .rate-chart .ax { font-size: 15px; }
    .rate-chart .now { font-size: 16px; }
    .offers-results { grid-template-columns: 1fr; }
    .salary-result-grid { grid-template-columns: 1fr 1fr; }

    .compare-table { font-size: .8rem; }
    .compare-table th, .compare-table td { padding: .5rem .625rem; }
}

/* ── SIDE ADS (desktop only) ── */
.side-ad {
    display: none;
}
@media (min-width: 1200px) {
    .side-ad {
        display: block;
        position: fixed;
        top: 80px;
        z-index: 10;
        width: 160px;
        pointer-events: auto;
    }
    .side-ad-left {
        left: calc((100vw - var(--max-width)) / 4 - 80px);
    }
    .side-ad-right {
        right: calc((100vw - var(--max-width)) / 4 - 80px);
    }
    .side-ad-sticky {
        position: sticky;
        top: 80px;
    }
}
@media (min-width: 1200px) and (max-width: 1339px) {
    .side-ad-left {
        left: 8px;
    }
    .side-ad-right {
        right: 8px;
    }
}

/* Cookie banner rimosso — si usa quello di Google (Privacy & Messaging in AdSense) */

/* ── UTILITIES ── */
.text-center { text-align: center; }
.text-small { font-size: .85rem; color: var(--gray-400); }
.mt-1 { margin-top: .5rem; }
.mt-2 { margin-top: 1rem; }
.mb-0 { margin-bottom: 0; }
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    border: 0;
}

/* ========== ACCESSIBILITY FIXES ==========
   Contrasto, focus visible, tap targets, landmark styling.
   Target: Lighthouse Accessibility >= 95.
   =========================================== */

/* --- Contrasto: rendi leggibili i grigi chiari ---
   #a3a3a3 su bianco ha ratio 2.58:1 (fail AA). Portiamo a #6b7280 (4.83:1) o #525252 (7.23:1). */
.breadcrumb,
.breadcrumb a { color: #525252; }
.breadcrumb .sep { color: #737373; }

.page-header .subtitle { color: #525252; }

/* Tab e toggle inattivi: contrasto su testo */
.calc-tab { color: #525252; }
.calc-tab:hover { color: #171717; }
.durata-unit { color: #525252; }
.durata-unit:not(.active):hover { color: #171717; }

/* Step guidato: testo esplicativo */
.calc-guided .step-explain { color: #525252; }

/* Risultati: label delle card */
.calc-results .result-hero .label { color: #525252; }
.calc-results .result-item .label { color: #525252; }

/* Card articolo */
.article-card .article-meta { color: #525252; }
.article-card .article-excerpt { color: #525252; }

/* Blog card */
.blog-card p { color: #525252; }
.blog-card-meta { color: #525252; }

/* Nav dropdown menu: categorie/link */
.nav-dropdown-menu .dropdown-cat { color: #525252; }

/* Salary & TAEG */
.salary-result-card .duration { color: #525252; }
.taeg-box .taeg-label { color: #525252; }

/* Utility text-small */
.text-small { color: #525252; }

/* FAQ marker decorativo — resta grigio ma migliora contrasto */
.faq-question::after { color: #737373; }

/* Amort table interest column */
.amort-table td:first-child { color: #737373; }
.amort-table .col-interest { color: #525252; }

/* Checkbox row */
.checkbox-row { color: #525252; }

/* Site nav link base color */
.site-nav a { color: #525252; }
.nav-dropdown-toggle { color: #525252; }

/* Footer: link colore */
.site-footer { color: #d4d4d4; }
.footer-col a { color: #d4d4d4; }
.footer-copy { color: #a3a3a3; }
.footer-heading { color: #fafafa; }

/* --- Focus visible: ring accessibile su interattivi --- */
:focus-visible {
    outline: 2px solid #0b5ea8;
    outline-offset: 2px;
    border-radius: 4px;
}
button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
summary:focus-visible,
[tabindex]:focus-visible {
    outline: 2px solid #0b5ea8;
    outline-offset: 2px;
}
/* Disabilita l'outline default solo quando focus-visible è supportato */
button:focus:not(:focus-visible),
a:focus:not(:focus-visible) {
    outline: none;
}

/* --- Tap target size: minimo 44x44 su mobile --- */
@media (max-width: 768px) {
    .calc-tab {
        min-height: 44px;
        padding: .625rem 1rem;
        display: inline-flex;
        align-items: center;
    }
    .durata-unit {
        min-height: 32px;
        padding: .375rem .75rem;
    }
    .site-nav a,
    .nav-dropdown-toggle {
        min-height: 44px;
        display: flex;
        align-items: center;
    }
    .nav-toggle {
        min-width: 44px;
        min-height: 44px;
    }
    .blog-filter {
        min-height: 40px;
        display: inline-flex;
        align-items: center;
    }
    .calc-btn,
    .btn-secondary,
    .email-row button {
        min-height: 44px;
    }
    .btn-export {
        min-height: 40px;
    }
}

/* --- Skip link (screen reader & keyboard users) --- */
/* Nascosto sopra il bordo superiore finché non riceve il focus.
   Si usa translateY(-100%) e non un "top: -40px" fisso: con il padding
   l'elemento supera i 40px di altezza, e la parte eccedente restava visibile
   come una striscia blu in alto a sinistra. Con la traslazione percentuale
   il nascondimento è esatto qualunque sia l'altezza. */
.skip-link {
    position: absolute;
    top: 0;
    left: 0;
    transform: translateY(-100%);
    background: #0b5ea8;
    color: #fff;
    padding: .5rem 1rem;
    z-index: 1000;
    text-decoration: none;
    border-radius: 0 0 6px 0;
    font-weight: 600;
}
.skip-link:focus {
    transform: translateY(0);
}

/* --- Heading: h2 nel footer con stile footer-heading (no differenza visiva) --- */
h2.footer-heading {
    font-size: .75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .06em;
    margin-bottom: .25rem;
    line-height: 1.3;
    color: #fafafa;
}

/* --- aria-current page: stile visibile (già attivo tramite .active) --- */
[aria-current="page"] {
    font-weight: 600;
}

/* Result-hero value: #0d9488 su #f0fdfa (3.43:1) passa AA per testo grande (48px bold),
   ma usiamo primary-dark (#0f766e) per sicurezza a 4.37:1. */
.calc-results .result-hero .value { color: #0f766e; }
.calc-results .result-item .value { color: #262626; }
.taeg-box .taeg-value { color: #171717; }
.taeg-box.highlight .taeg-value { color: #0f766e; }

/* --- Blog card hover state restore (above we darkened base) --- */
.blog-card { color: #525252; }
.blog-card:hover { color: #525252; }

/* --- Article card h3 link contrast --- */
.article-card h3 a { color: #171717; }

/* Fine ACCESSIBILITY FIXES */

/* ========== AUTHOR BYLINE (E-E-A-T) ========== */
.article-byline {
    display: flex;
    align-items: center;
    gap: .75rem;
    margin-top: .75rem;
    padding-top: .75rem;
    border-top: 1px solid #f0f0f0;
}
.byline-avatar {
    width: 36px; height: 36px;
    border-radius: 50%;
    background: #0b5ea8;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: .8rem;
    flex-shrink: 0;
}
.byline-text { display: flex; flex-direction: column; line-height: 1.3; font-size: .9rem; }
.byline-role { color: #525252; font-size: .8rem; }
/* Fine AUTHOR BYLINE */

/* ========== IMAGES IN CONTENT ========== */
.article-image {
    margin: 1.5rem 0;
    border-radius: var(--radius);
    overflow: hidden;
}
.article-image img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: var(--radius);
}
.article-image figcaption {
    font-size: .85rem;
    color: #525252;
    text-align: center;
    padding: .5rem .75rem 0;
    font-style: italic;
}
/* Fine IMAGES IN CONTENT */

/* ========== 404 PAGE ========== */
.not-found-cols {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}
.not-found-cols h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: .5rem;
}
@media (max-width: 640px) {
    .not-found-cols { grid-template-columns: 1fr; gap: 1.25rem; }
}
/* Fine 404 PAGE */