/* devissolaire.lu – one small stylesheet, system fonts (no third-party requests). */
:root {
  --ink: #0f2233; --muted: #5a6b7b; --line: #e3e8ee; --bg: #ffffff; --soft: #f5f8fb;
  --blue: #0b3b5c; --sun: #f6a609; --sun-dark: #c98100; --ok: #13804b; --err: #b42318;
  --radius: 14px; --shadow: 0 1px 2px rgba(15, 34, 51, .06), 0 8px 24px rgba(15, 34, 51, .06);
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; color: var(--ink); background: var(--bg); }
img, svg { max-width: 100%; }
a { color: var(--blue); }
h1, h2, h3, .h3 { line-height: 1.2; letter-spacing: -0.01em; margin: 0 0 .5em; }
h1 { font-size: clamp(1.9rem, 4.5vw, 3rem); }
h2 { font-size: clamp(1.4rem, 3vw, 1.9rem); margin-top: 1.4em; }
h3, .h3 { font-size: 1.15rem; }
p { margin: 0 0 1em; }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 16px; }
.narrow { max-width: 760px; }
.section { padding: 48px 16px; }
.band { background: var(--soft); }
.center { text-align: center; }
.lead { font-size: 1.15rem; color: #2c4155; }
.muted { color: var(--muted); }
.small { font-size: .85rem; }
.eyebrow { text-transform: uppercase; letter-spacing: .08em; font-size: .78rem; font-weight: 700; color: var(--sun-dark); margin: 0 0 .4em; }
.sr-only, .skip:not(:focus) { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip:focus { position: fixed; top: 8px; left: 8px; background: #fff; padding: 8px 12px; z-index: 10; }
:focus-visible { outline: 3px solid var(--sun); outline-offset: 2px; }

/* header / footer */
.top { border-bottom: 1px solid var(--line); background: #fff; position: sticky; top: 0; z-index: 5; }
.top-in { display: flex; align-items: center; gap: 16px; min-height: 64px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 8px; text-decoration: none; color: var(--blue); font-weight: 650; font-size: 1.15rem; }
.brand b, .brand-sm b { color: var(--sun-dark); }
.nav { display: flex; gap: 18px; align-items: center; margin-left: auto; flex-wrap: wrap; }
.nav a { text-decoration: none; color: var(--ink); font-weight: 550; font-size: .95rem; }
.nav a:hover { color: var(--sun-dark); }
.langs { display: flex; gap: 2px; }
.langs a { font-size: .8rem; font-weight: 700; text-decoration: none; color: var(--muted); padding: 4px 6px; border-radius: 6px; }
.langs a[aria-current] { background: var(--blue); color: #fff; }
@media (max-width: 760px) {
  .nav { order: 3; width: 100%; gap: 12px; padding-bottom: 10px; overflow-x: auto; flex-wrap: nowrap; margin-left: 0; }
  .nav a { white-space: nowrap; }
  .langs { margin-left: auto; }
}
.foot { background: var(--blue); color: #dbe6ef; padding: 40px 0 24px; margin-top: 40px; }
.foot a { color: #fff; }
.foot .muted { color: #a9bccc; }
.foot-in { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 24px; }
.foot nav { display: flex; flex-direction: column; gap: 6px; }
.brand-sm { font-size: 1.2rem; font-weight: 650; color: #fff; margin-bottom: .3em; }
@media (max-width: 760px) { .foot-in { grid-template-columns: 1fr; } }

/* buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; background: var(--sun); color: #1b1300; font-weight: 700;
  border: 0; border-radius: 999px; padding: 12px 22px; text-decoration: none; cursor: pointer; font-size: 1rem; line-height: 1.2; }
.btn:hover { background: #ffb81f; }
.btn-sm { padding: 8px 16px; font-size: .9rem; color: #1b1300 !important; }
.btn-lg { padding: 16px 28px; font-size: 1.1rem; }
.btn-ghost { background: transparent; color: var(--blue); box-shadow: inset 0 0 0 2px var(--blue); }
.btn-ghost:hover { background: var(--soft); }

/* hero + lookup */
.hero { background: radial-gradient(1200px 400px at 85% -10%, #fff1cc 0%, rgba(255, 241, 204, 0) 60%), linear-gradient(180deg, #f1f6fa, #fff); }
.hero-in { padding: 48px 16px 56px; max-width: 900px; }
.lookup { margin-top: 20px; }
.lookup-form { display: flex; gap: 8px; background: #fff; padding: 8px; border-radius: 999px; box-shadow: var(--shadow); border: 1px solid var(--line); }
.lookup-form input { flex: 1; border: 0; font-size: 1.05rem; padding: 10px 14px; min-width: 0; background: transparent; }
.lookup-form input:focus { outline: none; }
@media (max-width: 560px) { .lookup-form { flex-direction: column; border-radius: var(--radius); } .lookup-form .btn { width: 100%; } }
.lookup-busy { margin: 12px 0; color: var(--muted); }
.spinner { display: inline-block; width: 16px; height: 16px; border: 3px solid var(--line); border-top-color: var(--sun); border-radius: 50%; animation: spin 1s linear infinite; vertical-align: -3px; }
@keyframes spin { to { transform: rotate(360deg); } }
.lookup-result { margin-top: 20px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 20px; }
.result-head { display: flex; justify-content: space-between; gap: 12px; align-items: flex-start; flex-wrap: wrap; }
.result-head h3 { font-size: 1.25rem; margin: 0; }
.chip { display: inline-block; background: var(--soft); border: 1px solid var(--line); padding: 6px 12px; border-radius: 999px; font-weight: 650; text-decoration: none; font-size: .9rem; }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin: 16px 0; }
.stat { background: var(--soft); border-radius: 12px; padding: 12px; text-align: center; }
.stat .v { display: block; font-size: 1.6rem; font-weight: 800; color: var(--blue); letter-spacing: -0.02em; }
.stat .l { font-size: .8rem; color: var(--muted); }
@media (max-width: 640px) { .stats { grid-template-columns: repeat(2, 1fr); } }
.estimate { border: 2px solid #ffe3a3; background: #fffaf0; border-radius: 12px; padding: 14px 16px; margin-bottom: 16px; }
.estimate dl { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin: 6px 0 8px; }
.estimate dl div { display: flex; flex-direction: column; }
.estimate dt { font-size: .85rem; color: var(--muted); }
.estimate dd { margin: 0; font-size: 1.3rem; font-weight: 750; }
.estimate .total dd { color: var(--ok); }
@media (max-width: 560px) { .estimate dl { grid-template-columns: 1fr; } }
.map-wrap { border-radius: 12px; overflow: hidden; border: 1px solid var(--line); }
.map { height: 380px; background: #e9eef3; }
.result-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 16px; }

/* cards, tables, lists */
.cards { display: grid; gap: 16px; padding: 0; list-style: none; margin: 0; }
.cards.three { grid-template-columns: repeat(3, 1fr); }
.cards.two { grid-template-columns: repeat(2, 1fr); margin: 20px 0; }
@media (max-width: 860px) { .cards.three, .cards.two { grid-template-columns: 1fr; } }
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); }
.card .num { display: inline-grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; background: var(--sun); font-weight: 800; margin-bottom: 8px; }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
.table { width: 100%; border-collapse: collapse; font-size: .95rem; }
.table th, .table td { padding: 10px 14px; text-align: left; border-bottom: 1px solid var(--line); white-space: nowrap; }
.table thead th { background: var(--soft); font-size: .8rem; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); }
.table tbody tr:last-child th, .table tbody tr:last-child td { border-bottom: 0; }
.commune-cloud { display: flex; flex-wrap: wrap; gap: 8px; padding: 0; list-style: none; }
.commune-cloud a { display: inline-block; padding: 6px 12px; border-radius: 999px; background: var(--soft); text-decoration: none; font-size: .92rem; border: 1px solid var(--line); }
.commune-cloud a:hover { border-color: var(--sun); }
.filter input { width: 100%; max-width: 420px; padding: 12px 14px; border: 1px solid var(--line); border-radius: 10px; font-size: 1rem; margin: 8px 0 16px; }
.crumbs { font-size: .9rem; color: var(--muted); margin-bottom: 12px; }
.cta { text-align: center; }
.links ul { padding-left: 1.2em; }
.prose { max-width: 820px; }
.prose li { margin-bottom: .4em; }
.faq { border-bottom: 1px solid var(--line); padding: 12px 0; }
.faq summary { cursor: pointer; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary h2 { display: inline; font-size: 1.1rem; }
.faq summary::after { content: "+"; float: right; font-weight: 700; color: var(--sun-dark); }
.faq[open] summary::after { content: "–"; }
.faq p { margin: 10px 0 0; }
.alert { padding: 12px 16px; border-radius: 10px; background: #fff7e0; border: 1px solid #ffe3a3; margin: 12px 0; }
.alert-error { background: #fdecea; border-color: #f5c2bd; color: var(--err); }
.big-check { width: 72px; height: 72px; border-radius: 50%; background: var(--ok); color: #fff; font-size: 40px; display: grid; place-items: center; margin: 0 auto 16px; }

/* form */
.form fieldset { border: 0; padding: 0; margin: 0 0 24px; }
.form legend { font-weight: 750; font-size: 1.2rem; margin-bottom: 8px; }
.field { margin-bottom: 14px; display: flex; flex-direction: column; gap: 4px; }
.field label, .label { font-weight: 600; font-size: .95rem; margin: 0; }
.field input, .field select, .field textarea { font: inherit; padding: 11px 12px; border: 1px solid #c9d3dd; border-radius: 10px; background: #fff; width: 100%; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--blue); outline: none; box-shadow: 0 0 0 3px rgba(11, 59, 92, .15); }
.has-error input, .has-error select { border-color: var(--err); }
.err { color: var(--err); font-size: .9rem; margin: 4px 0 0; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 560px) { .row2 { grid-template-columns: 1fr; } }
.checks { display: flex; flex-wrap: wrap; gap: 8px 18px; margin: 6px 0 14px; }
.check { display: flex; align-items: center; gap: 8px; }
.check input, .consent input { width: 20px; height: 20px; accent-color: var(--blue); flex-shrink: 0; }
.consent { background: var(--soft); border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; margin-bottom: 20px; }
.consent label { display: flex; gap: 10px; align-items: flex-start; font-size: .95rem; }
.consent.has-error { border-color: var(--err); }
.roof-summary { margin-bottom: 20px; }
.hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }