/* CalcolaDIY studio: shared visual language, no runtime dependencies. */
:root { --accent: #A84620; --accent2: #BC6038; --accent-light: #F2DDCF; --tile: var(--accent); --parquet: var(--accent); --paint: var(--accent); --ink3: #706656; --radius: 6px; --page: 1320px; }
body { font-family: 'Manrope', system-ui, sans-serif; }
body::before { z-index: 4; opacity: .22; }
header { z-index: 5; padding-inline: max(24px, calc((100vw - var(--page)) / 2)); }
.logo-block { padding-block: 21px; }
.logo-sub { letter-spacing: .07em; font-size: 10px; text-transform: none; }
.header-actions { border-left: 0; gap: 6px; }
.hdr-btn, .lang-select { border: 0; height: 44px; padding-inline: 12px; font-size: 11px; letter-spacing: .02em; text-transform: none; }
.hdr-btn { border-radius: 4px; }
.hdr-btn svg { width: 17px; height: 17px; stroke-width: 1.5; opacity: 1; }
.theme-icon { display: flex; }
.theme-icon svg { width: 16px; height: 16px; }
.studio-nav { align-self: center; color: var(--ink2); font-size: 12px; text-decoration: none; padding: 12px; }
.studio-nav:hover { color: var(--accent); }
.projects-wrap { height: auto; align-self: center; }
.projects-dropdown { z-index: 6; border-top: 1px solid var(--border); border-radius: 8px; top: calc(100% + 15px); }
.project-load { min-width: 0; overflow-wrap: anywhere; font-family: inherit; }
.project-item { align-items: flex-start; }
.projects-dropdown { max-width: calc(100vw - 36px); max-height: calc(100dvh - 150px); overflow-y: auto; }
.hero, .main, .tab-nav, .tool-directory, .seo-section, .faq-section, .related-guides, footer { max-width: var(--page); margin-inline: auto; }
.hero { padding: 38px 24px 34px; grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr); align-items: center; gap: 40px; border: 0; }
.hero-copy { padding-bottom: 8px; }
.eyebrow { display: flex; align-items: center; gap: 10px; color: var(--accent); font: 400 11px 'DM Mono', monospace; letter-spacing: .1em; text-transform: uppercase; margin-bottom: 17px; }
.eyebrow::before { content: ''; width: 28px; height: 1px; background: currentColor; }
.hero-title { font-size: clamp(38px, 4.5vw, 64px); max-width: 12ch; line-height: 1.08; font-weight: 700; }
.hero-title em { display: block; }
.hero-description { font-size: 15px; line-height: 1.8; color: var(--ink2); max-width: 43ch; margin-top: 20px; text-wrap: pretty; }
.hero-bottom { display: flex; gap: 20px; align-items: center; flex-wrap: wrap; margin-top: 23px; }
.studio-link { display: inline-flex; align-items: center; gap: 12px; color: var(--ink); font-size: 13px; font-weight: 700; text-decoration: none; padding-bottom: 8px; border-bottom: 1px solid var(--accent); }
.studio-link span { color: var(--accent); transition: transform .25s ease; }
.studio-link:hover span { transform: translateX(4px); }
.hero-note { color: var(--ink3); font-size: 11px; }
.room-stage { position: relative; align-self: stretch; min-height: 310px; background: var(--bg2); border-radius: 4px 48px 4px 4px; overflow: hidden; isolation: isolate; }
.room-stage::before { content: ''; position: absolute; inset: 0; background: radial-gradient(var(--border) .8px, transparent .8px); background-size: 16px 16px; opacity: .4; z-index: -1; }
.stage-top { display: flex; justify-content: space-between; gap: 12px; padding: 18px 22px 0; color: var(--ink3); font: 400 10px 'DM Mono', monospace; letter-spacing: .05em; }
.stage-top span:last-child { color: var(--accent); }
.room-stage svg { display: block; width: 100%; height: 240px; overflow: visible; }
.room-shadow { fill: var(--ink); opacity: .045; }
#preview-geometry { transform-origin: 50% 60%; animation: room-float 7s ease-in-out infinite; }
.preview-floor, .preview-wall { transition: fill .35s ease; stroke: #B9A58C; stroke-width: 1; stroke-linejoin: round; }
.preview-wall { fill: #E0D3BF; }
.preview-wall.side { fill: #EADFCF; }
.room-stage[data-material='vernice'] .preview-wall { fill: #C37655; }
.room-stage[data-material='vernice'] .preview-wall.side { fill: #DEAB8D; }
.preview-edge { fill: #C3AF94; }
.preview-bottom { display: flex; align-items: baseline; justify-content: space-between; gap: 15px; padding: 0 22px 19px; }
.preview-bottom p { color: var(--ink3); font-size: 11px; line-height: 1.5; max-width: 23ch; }
.preview-area { font-family: 'DM Mono', monospace; font-size: 25px; color: var(--ink); letter-spacing: -.06em; white-space: nowrap; }
.preview-area small { font-size: 12px; letter-spacing: 0; color: var(--ink3); }
.tab-nav { padding: 0 24px; gap: 0; }
.tab-btn { flex: 1; justify-content: flex-start; padding: 19px 22px; font-family: inherit; font-size: 14px; text-transform: none; letter-spacing: -.015em; border-bottom-width: 3px; }
.tab-icon { border-radius: 4px; background: transparent; width: 30px; height: 30px; color: var(--ink3); }
.tab-icon svg { width: 22px; height: 22px; }
.tab-btn.active { background: var(--bg2); }
.tab-btn.active .tab-icon { background: none; color: var(--accent); }
.main { padding: 26px 24px 42px; }
.panel-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 0; background: transparent; border: 1px solid var(--border); border-radius: 10px; overflow: hidden; }
.panel-inputs, .panel-results { padding: 28px 30px; }
.panel-results { background: var(--bg2); border-left: 1px solid var(--border); }
.section-label { font-size: 10px; letter-spacing: .13em; }
.room-card { background: var(--bg); border-radius: 6px; }
.room-card-body { border-top: 1px solid var(--border2); }
.room-drag { display: none; }
.room-name, .field-label, .collapsible-hdr, .seg-btn, .calc-btn, .action-btn, .demo-btn, .room-mode-btn { font-family: inherit; }
.field-label, .collapsible-hdr { font-size: 12px; text-transform: none; letter-spacing: 0; }
.field-hint { font-family: inherit; font-size: 11px; line-height: 1.65; }
.room-mode-btn { font-size: 11px; }
.seg-btn { color: var(--ink2); }
.seg-btn.active { background: var(--accent); }
.calc-btn { background: var(--accent); color: #fff; text-transform: none; font-size: 14px; letter-spacing: 0; padding: 17px; }
.calc-btn:hover { background: #843A1E; transform: translateY(-1px); }
.result-empty { min-height: 330px; gap: 20px; padding: 45px 22px; }
.result-empty-icon { opacity: 1; display: flex; width: 88px; height: 88px; align-items: center; justify-content: center; border-radius: 50%; border: 1px dashed var(--border); }
.result-empty-icon svg { width: 40px; height: 40px; color: var(--accent); }
.result-empty-text { opacity: 1; font-family: inherit; text-transform: none; font-size: 13px; letter-spacing: 0; text-align: center; max-width: 25ch; line-height: 1.7; }
.result-highlight { background: var(--accent-light); color: var(--ink); border-radius: 6px; padding: 22px; }
.result-highlight .rk { color: var(--ink2); opacity: 1; font-size: 12px; text-transform: none; letter-spacing: 0; }
.result-highlight .rv { font-family: 'DM Mono', monospace; font-size: clamp(29px, 3vw, 40px); color: var(--accent); letter-spacing: -.06em; }
.faq-chevron svg { display: block; width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.5; }
.result-rows { background: transparent; }
.result-row { background: transparent; border-bottom: 1px solid var(--border); padding: 12px 0; }
.rk { font-size: 12px; text-transform: none; letter-spacing: 0; }
.pack-qty { font-family: 'DM Mono', monospace; font-size: 15px; }
.pack-card { background: var(--bg); padding: 15px 8px; }
.pack-card.best { background: var(--accent-light); }
.pack-unit { margin-top: 8px; font-size: 11px; }
.pack-tag { font-size: 8px; line-height: 1.5; }
.action-btn { background: var(--bg); text-transform: none; font-size: 12px; letter-spacing: 0; }
.note-box p, .disclaimer-box { font-family: inherit; font-size: 11px; }
.related-guides { padding: 24px; margin-bottom: 0; }
.tool-directory { padding: 38px 24px 50px; }
.directory-heading { display: grid; grid-template-columns: 1fr auto; align-items: end; gap: 24px; margin-bottom: 26px; }
.directory-heading h2 { font-family: 'Playfair Display', Georgia, serif; font-size: clamp(28px, 3vw, 40px); letter-spacing: -.035em; line-height: 1.15; }
.directory-heading p { margin-top: 10px; font-size: 13px; color: var(--ink2); line-height: 1.7; }
.tool-search { width: 265px; }
.tool-search label { display: block; color: var(--ink3); font-size: 11px; margin-bottom: 7px; }
.tool-search input { width: 100%; padding: 11px 14px; border: 1px solid var(--border); border-radius: 4px; color: var(--ink); font: 13px 'Manrope', system-ui, sans-serif; background: var(--bg); }
.tool-grid { display: grid; grid-template-columns: 1.25fr 1fr; gap: 0; border-top: 1px solid var(--border); }
.tool-card { display: grid; grid-template-columns: 45px 1fr 20px; gap: 14px; align-items: center; min-height: 100px; padding: 21px 24px 21px 0; border-bottom: 1px solid var(--border); text-decoration: none; color: var(--ink); transition: background .2s; }
.tool-card.is-second-column { padding-left: 24px; border-left: 1px solid var(--border); }
.tool-card svg { width: 34px; height: 34px; stroke: var(--accent); stroke-width: 1.5; fill: none; }
.tool-card h3 { font-size: 15px; font-weight: 600; letter-spacing: -.025em; }
.tool-card p { color: var(--ink3); font-size: 12px; line-height: 1.6; margin-top: 5px; max-width: 36ch; }
.tool-card .tool-arrow { color: var(--accent); transition: transform .2s; }
.tool-card:hover { background: var(--bg2); }
.tool-card:hover .tool-arrow { transform: translate(3px, -3px); }
.tool-card:focus-visible { outline-offset: -3px; }
.directory-status { margin-top: 13px; color: var(--ink3); font-size: 12px; min-height: 18px; }
.seo-section { padding: 40px 24px; }
.seo-card { background: transparent; border: 0; border-bottom: 1px solid var(--border); padding: 0 0 19px; }
.seo-card h3 { text-transform: none; font-size: 15px; letter-spacing: 0; }
.seo-card p { font-family: inherit; font-size: 12px; }
.faq-section { padding: 40px 24px 55px; }
.faq-list { max-width: none; display: grid; grid-template-columns: 1fr 1fr; gap: 0 30px; align-items: start; }
.faq-item { border: 0; border-bottom: 1px solid var(--border); border-radius: 0; }
.faq-q { background: transparent; padding: 18px 0; font: 600 13px 'Manrope', system-ui, sans-serif; color: var(--ink); }
.faq-a { padding: 0 0 18px; border: 0; font-family: inherit; font-size: 13px; }
footer { padding: 24px; }
button, a, input { -webkit-tap-highlight-color: transparent; }
@keyframes room-float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-5px); } }
@media (prefers-reduced-motion: no-preference) { .hero-copy { animation: studio-enter .5s ease both; } .room-stage { animation: studio-enter .7s .08s ease both; } }
@keyframes studio-enter { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }
:root[data-theme='dark'] .room-stage { background: #29251E; }
:root[data-theme='dark'] .preview-area { color: var(--ink); }
:root[data-theme='dark'] .result-highlight { background: var(--accent-light); color: var(--ink); }
:root[data-theme='dark'] .calc-btn { background: var(--accent); color: #20150F; }
:root[data-theme='dark'] .calc-btn:hover { background: #FFAB7A; }
#main-content, #strumenti { scroll-margin-top: 145px; }
main:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.skip-link { top: 8px; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); padding: 0; white-space: nowrap; transition: none; }
.skip-link:focus { top: 8px; width: auto; height: auto; clip-path: none; padding: 12px 18px; }
.table-scroll { max-width: 100%; overflow-x: auto; margin-top: 16px; }
.table-scroll .value-table { margin-top: 0; min-width: 480px; }
[role='button']:focus-visible, .table-scroll:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
@media(max-width: 900px) { .hero { gap: 24px; } .panel-grid { grid-template-columns: minmax(0, 1fr); } .panel-results { border-left: 0; border-top: 1px solid var(--border); } .hero-title { font-size: 45px; } }
@media(max-width: 760px) { header { padding-inline: 18px; } .header-actions { overflow: visible; justify-content: space-between; } .hdr-btn { padding-inline: 10px; } .logo-block { padding-block: 17px; } .hero { grid-template-columns: minmax(0, 1fr); padding: 29px 18px 24px; gap: 24px; } .hero-title { max-width: 17ch; font-size: clamp(38px, 8vw, 48px); } .hero-title em { display: inline; } .hero-description { margin-top: 16px; max-width: 48ch; } .room-stage { min-height: 245px; border-top-right-radius: 32px; } .room-stage svg { height: 175px; } .stage-top { padding: 14px 18px 0; } .preview-bottom { padding: 0 18px 15px; } .preview-area { font-size: 21px; } .tab-nav { padding-inline: 18px; } .tab-btn { padding: 16px 12px; justify-content: center; font-size: 12px; } .tab-icon { width: 22px; } .tab-icon svg { width: 19px; } .main { padding: 20px 18px 30px; } .panel-inputs, .panel-results { padding: 24px 18px; } .result-empty { min-height: 230px; } .tool-directory { padding: 30px 18px; } .directory-heading { grid-template-columns: 1fr; gap: 18px; } .tool-search { width: 100%; } .tool-grid { grid-template-columns: minmax(0, 1fr); } .tool-card, .tool-card.is-second-column { padding: 19px 0; border-left: 0; min-height: 92px; } .faq-list { grid-template-columns: 1fr; } .related-guides, .seo-section, .faq-section, footer { padding-inline: 18px; } }
@media(max-width: 390px) { .hdr-btn, .lang-select, .studio-nav { font-size: 10px; padding-inline: 7px; } .logo-sub { font-size: 9px; } .tab-btn { padding-inline: 8px; gap: 5px; } .room-mode { flex-wrap: wrap; } }
@media(max-width: 760px) {
  .tab-btn { flex: 1 1 0; min-width: 0; flex-direction: column; white-space: normal; text-align: center; line-height: 1.45; gap: 6px; padding: 12px 6px; }
  .tab-icon { flex-shrink: 0; }
  .tab-btn span:last-child { overflow-wrap: anywhere; text-wrap: balance; }
  input[type='number'], input[type='number'].small, input[type='text'], input[type='text'].small, .tool-search input, .lang-select { font-size: 16px; }
  .lang-select { width: auto; min-width: 65px; padding-right: 22px; }
  .input-row { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .projects-dropdown { max-height: calc(100dvh - 160px); }
  .room-name { max-width: 90px; }
  .room-card-right { gap: 5px; }
}
@media(prefers-reduced-motion: reduce) { #preview-geometry { animation: none; } }
@media print { .tool-directory, .studio-nav { display: none !important; } .main { padding: 0; } .panel-grid, .panel-results { border: 0; } .result-highlight { background: #eee !important; } }

/* Prevent intrinsic content from stretching mobile layout. */
.seo-section > *, .table-scroll { min-width: 0; }
.projects-save-input input { min-width: 0; }
.save-status { overflow-wrap: anywhere; }
@media(max-width:390px) { .header-actions > [data-action="print"] svg { display: none; } .hdr-btn { padding-inline: 5px; } .header-actions { gap: 0; } }