/* ============================================================
   ToolPartitaIva — design system minimale
   ============================================================ */

@font-face {
    font-family: 'Instrument Sans';
    font-style: normal;
    font-weight: 400 700;
    font-display: swap;
    src: url('/assets/fonts/instrument-sans-var.woff2') format('woff2');
}
@font-face {
    font-family: 'JetBrains Mono';
    font-style: normal;
    font-weight: 400 600;
    font-display: swap;
    src: url('/assets/fonts/jetbrains-mono-var.woff2') format('woff2');
}

:root {
    --bg: #ffffff;
    --bg-soft: #f7f8f8;
    --surface: #ffffff;
    --ink: #16181d;
    --ink-soft: #5b616e;
    --ink-faint: #8a8f99;
    --border: #e6e8eb;
    --border-strong: #d3d7dc;
    --accent: #0f7a6e;
    --accent-hover: #0b5f56;
    --accent-soft: #e6f4f1;
    --danger: #c1462f;
    --danger-soft: #fbeae6;
    --shadow-sm: 0 1px 2px rgba(20, 21, 26, 0.05);
    --shadow-md: 0 1px 2px rgba(20,21,26,.04), 0 12px 28px -14px rgba(20,21,26,.16);
    --radius: 10px;
    --radius-sm: 7px;

    --font: 'Instrument Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #0c0d0f;
        --bg-soft: #131417;
        --surface: #161719;
        --ink: #edeef0;
        --ink-soft: #9aa0ab;
        --ink-faint: #676d78;
        --border: #24262a;
        --border-strong: #34373c;
        --accent: #2bb3a3;
        --accent-hover: #4ecabb;
        --accent-soft: #103430;
        --danger: #e2725a;
        --danger-soft: #2e1a15;
        --shadow-sm: 0 1px 2px rgba(0,0,0,.3);
        --shadow-md: 0 1px 2px rgba(0,0,0,.35), 0 16px 32px -16px rgba(0,0,0,.6);
    }
}
:root[data-theme="dark"] {
    --bg: #0c0d0f;
    --bg-soft: #131417;
    --surface: #161719;
    --ink: #edeef0;
    --ink-soft: #9aa0ab;
    --ink-faint: #676d78;
    --border: #24262a;
    --border-strong: #34373c;
    --accent: #2bb3a3;
    --accent-hover: #4ecabb;
    --accent-soft: #103430;
    --danger: #e2725a;
    --danger-soft: #2e1a15;
    --shadow-sm: 0 1px 2px rgba(0,0,0,.3);
    --shadow-md: 0 1px 2px rgba(0,0,0,.35), 0 16px 32px -16px rgba(0,0,0,.6);
}
:root[data-theme="light"] {
    --bg: #ffffff;
    --bg-soft: #f7f8f8;
    --surface: #ffffff;
    --ink: #16181d;
    --ink-soft: #5b616e;
    --ink-faint: #8a8f99;
    --border: #e6e8eb;
    --border-strong: #d3d7dc;
    --accent: #0f7a6e;
    --accent-hover: #0b5f56;
    --accent-soft: #e6f4f1;
    --danger: #c1462f;
    --danger-soft: #fbeae6;
    --shadow-sm: 0 1px 2px rgba(20, 21, 26, 0.05);
    --shadow-md: 0 1px 2px rgba(20,21,26,.04), 0 12px 28px -14px rgba(20,21,26,.16);
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    font-family: var(--font);
    color: var(--ink);
    background: var(--bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.wrap {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 24px;
}

a { color: var(--accent); }
a:hover { color: var(--accent-hover); }

h1, h2, h3 { font-weight: 700; letter-spacing: -0.02em; }

/* Header */
.site-header {
    background: color-mix(in srgb, var(--bg) 88%, transparent);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 10;
}
.site-header .wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}
.logo {
    display: inline-flex;
    align-items: baseline;
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--ink);
    text-decoration: none;
    letter-spacing: -0.02em;
}
.logo span { color: var(--accent); }
.main-nav a {
    text-decoration: none;
    color: var(--ink-soft);
    font-weight: 600;
    font-size: 0.9rem;
}
.main-nav a:hover { color: var(--ink); }

/* Hero */
.hero {
    text-align: center;
    padding: 64px 0 32px;
}
.hero h1 {
    font-size: clamp(2rem, 4.4vw, 2.9rem);
    color: var(--ink);
    margin: 0 0 16px;
    line-height: 1.15;
}
.hero p.lead {
    font-size: 1.1rem;
    color: var(--ink-soft);
    max-width: 580px;
    margin: 0 auto 28px;
}
.hero p.lead strong { color: var(--ink); font-weight: 600; }
.hero p.lead code { font-family: var(--font-mono); background: var(--bg-soft); padding: 1px 5px; border-radius: 4px; font-size: 0.92em; }

/* Dropzone */
.dropzone-section { padding: 8px 0 48px; }
.dropzone {
    border: 1.5px dashed var(--border-strong);
    border-radius: var(--radius);
    background: var(--bg-soft);
    padding: 52px 24px;
    text-align: center;
    cursor: pointer;
    transition: border-color .15s, background .15s;
    max-width: 600px;
    margin: 0 auto;
}
.dropzone:hover,
.dropzone.dragover {
    background: var(--accent-soft);
    border-color: var(--accent);
}
.dropzone .dz-icon { display: flex; justify-content: center; margin-bottom: 16px; color: var(--ink-faint); }
.dropzone:hover .dz-icon, .dropzone.dragover .dz-icon { color: var(--accent); }
.dropzone .dz-title { font-weight: 600; font-size: 1.05rem; color: var(--ink); margin-bottom: 6px; }
.dropzone .dz-sub { font-size: 0.85rem; color: var(--ink-faint); font-family: var(--font-mono); }
.dropzone input[type=file] { display: none; }

.dz-error {
    max-width: 600px;
    margin: 14px auto 0;
    background: var(--danger-soft);
    border: 1px solid transparent;
    color: var(--danger);
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    display: none;
}
.dz-error.show { display: block; }

.dz-loading {
    max-width: 600px;
    margin: 14px auto 0;
    text-align: center;
    color: var(--ink-soft);
    font-weight: 500;
    font-size: .88rem;
    display: none;
}
.dz-loading.show { display: block; }

/* Toolbar sopra l'anteprima */
.risultato-toolbar {
    max-width: 860px;
    margin: 0 auto 14px;
    display: none;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}
.risultato-toolbar.show { display: flex; }
.risultato-toolbar .file-name {
    font-size: 0.85rem;
    color: var(--ink-faint);
    font-family: var(--font-mono);
}
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--accent);
    color: #fff;
    border: 1px solid var(--accent);
    padding: 9px 18px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.88rem;
    cursor: pointer;
    text-decoration: none;
    font-family: var(--font);
}
.btn:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn.secondary {
    background: var(--surface);
    color: var(--ink);
    border: 1px solid var(--border-strong);
}
.btn.secondary:hover { background: var(--bg-soft); }

/* Fattura renderizzata */
#risultato { max-width: 860px; margin: 0 auto 64px; }

.fattura-doc {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    padding: 36px;
}
.fattura-doc .fd-head {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 20px;
    margin-bottom: 24px;
}
.fattura-doc .fd-head h2 { margin: 0 0 4px; color: var(--ink); font-size: 1.3rem; }
.fattura-doc .fd-head .fd-meta { font-size: 0.88rem; color: var(--ink-soft); }
.fattura-doc .fd-parti {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 28px;
}
@media (max-width: 640px) { .fattura-doc .fd-parti { grid-template-columns: 1fr; } }
.fd-parte {
    background: var(--bg-soft);
    border-radius: var(--radius-sm);
    padding: 16px 18px;
}
.fd-parte h3 {
    margin: 0 0 8px;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: var(--ink-faint);
}
.fd-parte .nome { font-weight: 700; font-size: 1.02rem; margin-bottom: 4px; color: var(--ink); }
.fd-parte .riga { font-size: 0.87rem; color: var(--ink-soft); line-height: 1.55; }

table.fd-righe {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 24px;
    font-size: 0.89rem;
}
table.fd-righe th, table.fd-righe td {
    padding: 11px 8px;
    border-bottom: 1px solid var(--border);
    text-align: left;
}
table.fd-righe th {
    color: var(--ink-faint);
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .04em;
}
table.fd-righe td.num, table.fd-righe th.num { text-align: right; white-space: nowrap; font-family: var(--font-mono); font-variant-numeric: tabular-nums; }

.fd-riepilogo {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 24px;
}
.fd-riepilogo table { border-collapse: collapse; font-size: 0.89rem; min-width: 290px; }
.fd-riepilogo td { padding: 6px 10px; }
.fd-riepilogo td.num { text-align: right; font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
.fd-riepilogo tr.totale td { font-weight: 700; font-size: 1.1rem; color: var(--ink); border-top: 1px solid var(--border); padding-top: 12px; }

.fd-pagamento {
    background: var(--accent-soft);
    border-radius: var(--radius-sm);
    padding: 16px 18px;
    font-size: 0.89rem;
}
.fd-pagamento h3 { margin: 0 0 8px; font-size: 0.72rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--accent-hover); }
.fd-pagamento .riga { font-family: var(--font-mono); font-size: 0.86rem; color: var(--ink); }

/* FAQ */
.faq { max-width: 720px; margin: 24px auto 64px; padding: 0 24px; }
.faq h2 { color: var(--ink); text-align: center; margin-bottom: 24px; }
.faq details {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 15px 18px;
    margin-bottom: 8px;
}
.faq summary {
    font-weight: 600;
    font-size: 0.98rem;
    cursor: pointer;
    color: var(--ink);
    list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq details p { margin: 10px 0 0; font-size: 0.94rem; color: var(--ink-soft); }

/* Intro / spiegazione sotto la fold */
.intro-seo { max-width: 720px; margin: 8px auto 44px; padding: 0 24px; font-size: 0.97rem; color: var(--ink-soft); }
.intro-seo h2 { color: var(--ink); font-size: 1.3rem; }
.intro-seo strong { color: var(--ink); }

/* Footer */
.site-footer {
    background: var(--bg-soft);
    color: var(--ink-soft);
    padding: 32px 0;
    margin-top: 40px;
    border-top: 1px solid var(--border);
}
.footer-nav { display: flex; gap: 20px; flex-wrap: wrap; margin-bottom: 14px; }
.footer-nav a { color: var(--ink); text-decoration: none; font-size: 0.88rem; font-weight: 600; }
.footer-nav a:hover { color: var(--accent); }
.footer-note, .footer-copy { font-size: 0.8rem; margin: 4px 0; color: var(--ink-faint); }

/* Pagine legali generiche */
.legal-page { max-width: 720px; margin: 44px auto; padding: 0 24px; }
.legal-page h1 { color: var(--ink); }
.legal-page h2 { color: var(--ink); font-size: 1.1rem; margin-top: 30px; }
.legal-page em { color: var(--ink-faint); font-style: normal; font-size: .85rem; }

/* Cookie banner */
.cookie-banner {
    position: fixed;
    left: 0; right: 0; bottom: 0;
    background: var(--surface);
    color: var(--ink);
    padding: 16px 0;
    transform: translateY(100%);
    transition: transform .25s ease;
    z-index: 50;
    border-top: 1px solid var(--border);
    box-shadow: var(--shadow-md);
}
.cookie-banner.is-visible { transform: translateY(0); }
.cookie-banner-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
}
.cookie-banner-inner p { margin: 0; font-size: 0.86rem; max-width: 640px; color: var(--ink-soft); }
.cookie-banner-inner a { color: var(--ink); text-decoration: underline; }
.cookie-banner-actions { display: flex; gap: 10px; flex-shrink: 0; }

/* Print */
@media print {
    .site-header, .site-footer, .risultato-toolbar, .dropzone-section, .faq, .intro-seo, .cookie-banner { display: none !important; }
    body { background: #fff; }
    .fattura-doc { box-shadow: none; border: none; }
}