/* Bauklima Magazin - Ingenieur-Heft aus Luxemburg.
   structure revue-technique, prefixe bkm-. Planblau, Kupferorange, Kalkweiss,
   Betongrau, duenne technische Masslinien. Angles vifs, aucun ombre. */

:root {
  --bkm-paper: #F4F6F8;
  --bkm-paper2: #E7EDF2;
  --bkm-ink: #16222E;
  --bkm-ink2: #4A5C6E;
  --bkm-rule: #C3CED8;
  --bkm-blue: #1D4E79;
  --bkm-copper: #B5612A;
  --bkm-concrete: #7E8894;
  --bkm-grass: #46694C;
  --bkm-night: #10202E;
  --bkm-night-ink: #E6EDF3;
  --bkm-night-rule: #2C4256;
  --bkm-serif: Georgia, 'Palatino Linotype', 'Times New Roman', serif;
  --bkm-sans: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --bkm-mono: ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
  --bkm-sec: var(--bkm-blue);
}
.bkm-v1 { --bkm-sec: #1D4E79; }
.bkm-v2 { --bkm-sec: #B5612A; }
.bkm-v3 { --bkm-sec: #46694C; }

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bkm-paper); color: var(--bkm-ink); font-family: var(--bkm-sans); font-size: 15.5px; line-height: 1.62; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--bkm-blue); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { color: var(--bkm-copper); }
h1, h2, h3 { font-family: var(--bkm-serif); font-weight: 600; line-height: 1.18; margin: 0 0 .5rem; }
.bkm-wrap { width: min(74rem, 92vw); margin-inline: auto; }
.bkm-skip { position: absolute; left: -999px; }
.bkm-skip:focus { left: 1rem; top: 1rem; background: var(--bkm-night); color: #fff; padding: .5rem .8rem; z-index: 50; }

/* masthead */
.bkm-mast { background: var(--bkm-paper); border-bottom: 2px solid var(--bkm-ink); }
.bkm-mast__row { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: .9rem 0; flex-wrap: wrap; }
.bkm-brand { display: flex; align-items: center; gap: .7rem; text-decoration: none; color: var(--bkm-ink); }
.bkm-brand__mark { font-family: var(--bkm-mono); font-size: .8rem; letter-spacing: .04em; border: 1.5px solid var(--bkm-copper); color: var(--bkm-copper); padding: .35rem .45rem; }
.bkm-brand__name { display: block; font-family: var(--bkm-serif); font-size: 1.28rem; font-weight: 600; }
.bkm-brand__tag { display: block; font-family: var(--bkm-mono); font-size: .66rem; letter-spacing: .1em; text-transform: uppercase; color: var(--bkm-ink2); }
.bkm-nav ul { list-style: none; display: flex; gap: 1.1rem; margin: 0; padding: 0; flex-wrap: wrap; }
.bkm-nav a { font-family: var(--bkm-mono); font-size: .72rem; letter-spacing: .06em; text-transform: uppercase; text-decoration: none; color: var(--bkm-ink2); border-bottom: 2px solid transparent; padding-bottom: .2rem; }
.bkm-nav a:hover, .bkm-nav a[aria-current="page"] { color: var(--bkm-ink); border-bottom-color: var(--bkm-copper); }
.bkm-nav__toggle { position: absolute; opacity: 0; pointer-events: none; }
.bkm-nav__handle { display: none; font-family: var(--bkm-mono); font-size: .72rem; text-transform: uppercase; border: 1.5px solid var(--bkm-ink); padding: .4rem .6rem; cursor: pointer; }

/* breadcrumb */
.bkm-crumb { padding: 1rem 0 0; }
.bkm-crumb ol { list-style: none; display: flex; gap: .5rem; margin: 0; padding: 0; font-family: var(--bkm-mono); font-size: .68rem; letter-spacing: .04em; text-transform: uppercase; color: var(--bkm-ink2); flex-wrap: wrap; }
.bkm-crumb li + li::before { content: "/"; margin-right: .5rem; color: var(--bkm-rule); }

/* article layout */
.bkm-page { display: grid; grid-template-columns: minmax(0, 1fr) 17rem; gap: 2.6rem; padding: 1.4rem 0 3rem; }
.bkm-article { min-width: 0; }
.bkm-kicker { font-family: var(--bkm-mono); font-size: .7rem; letter-spacing: .12em; text-transform: uppercase; color: var(--bkm-sec); margin: 0 0 .5rem; }
.bkm-article h1 { font-size: clamp(1.7rem, 3.4vw, 2.5rem); }
.bkm-article__standfirst { font-size: 1.1rem; color: var(--bkm-ink2); max-width: 46rem; }
.bkm-article__meta { list-style: none; display: flex; gap: 1rem; padding: .8rem 0; margin: 0 0 1.2rem; border-top: 1px solid var(--bkm-rule); border-bottom: 1px solid var(--bkm-rule); font-family: var(--bkm-mono); font-size: .68rem; letter-spacing: .04em; text-transform: uppercase; color: var(--bkm-ink2); flex-wrap: wrap; }
.bkm-article__hero { margin: 0 0 1.6rem; }
.bkm-article__hero figcaption { font-size: .78rem; color: var(--bkm-ink2); padding-top: .5rem; }
.bkm-article__hero img { border-left: 3px solid var(--bkm-sec); }
.bkm-body { max-width: 46rem; }
.bkm-body h2 { font-size: 1.34rem; margin-top: 2rem; padding-top: .5rem; border-top: 1px solid var(--bkm-rule); }
.bkm-body p { margin: 0 0 1rem; }
.bkm-body a { text-decoration: underline; }
.bkm-onward { margin-top: 2.4rem; border-top: 2px solid var(--bkm-ink); padding-top: .8rem; }
.bkm-onward h2 { font-size: 1rem; font-family: var(--bkm-mono); text-transform: uppercase; letter-spacing: .08em; }
.bkm-onward ul { list-style: none; margin: 0; padding: 0; }
.bkm-onward li { padding: .4rem 0; border-bottom: 1px solid var(--bkm-rule); }

/* sidebar */
.bkm-side { font-size: .9rem; }
.bkm-side__box { border: 1px solid var(--bkm-rule); border-left: 3px solid var(--bkm-sec); padding: 1rem; margin-bottom: 1.2rem; background: var(--bkm-paper2); }
.bkm-side__box h2 { font-size: .8rem; font-family: var(--bkm-mono); text-transform: uppercase; letter-spacing: .08em; color: var(--bkm-sec); }
.bkm-side__box ul { list-style: none; margin: 0; padding: 0; }
.bkm-side__box li { padding: .3rem 0; border-bottom: 1px dotted var(--bkm-rule); }
.bkm-side__box li:last-child { border-bottom: 0; }
.bkm-side__toc a { text-decoration: none; }

/* cards */
.bkm-cards { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr)); gap: 1.4rem; }
.bkm-card { border: 1px solid var(--bkm-rule); background: #fff; display: flex; flex-direction: column; }
.bkm-card__fig { margin: 0; }
.bkm-card__fig img { aspect-ratio: 16 / 9; object-fit: cover; }
.bkm-card__body { padding: .9rem 1rem 1.1rem; }
.bkm-card__tag { font-family: var(--bkm-mono); font-size: .64rem; letter-spacing: .1em; text-transform: uppercase; color: var(--bkm-sec); margin: 0 0 .35rem; }
.bkm-card h3 { font-size: 1.08rem; margin-bottom: .4rem; }
.bkm-card h3 a { text-decoration: none; }
.bkm-card h3 a:hover { text-decoration: underline; }
.bkm-card__note { font-size: .88rem; color: var(--bkm-ink2); margin: 0 0 .5rem; }
.bkm-card__caption { font-size: .78rem; color: var(--bkm-concrete); margin: 0; }
.bkm-hublist { margin-top: 1.6rem; }

/* bands */
.bkm-band { padding: 2.6rem 0; border-top: 1px solid var(--bkm-rule); }
.bkm-band--tint { background: var(--bkm-paper2); }
.bkm-band--night { background: var(--bkm-night); color: var(--bkm-night-ink); border-top: 0; }
.bkm-band--night .bkm-kicker { color: #E9A16A; }
.bkm-band--night h2 { color: #fff; }
.bkm-band--night .bkm-card { background: #16293A; border-color: var(--bkm-night-rule); }
.bkm-band--night .bkm-card__note, .bkm-band--night .bkm-card__caption { color: #A9BDCC; }
.bkm-band h2 { font-size: clamp(1.4rem, 2.6vw, 1.9rem); }
.bkm-standfirst { font-size: 1.02rem; color: var(--bkm-ink2); max-width: 46rem; }
.bkm-band--night .bkm-standfirst { color: #B7C8D5; }
.bkm-more { margin-top: 1.2rem; }
.bkm-more a { font-family: var(--bkm-mono); font-size: .76rem; text-transform: uppercase; letter-spacing: .06em; }

/* hero */
.bkm-hero { padding: 2.4rem 0 2.8rem; }
.bkm-hero__grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: 2.4rem; align-items: center; }
.bkm-hero__kicker { font-family: var(--bkm-mono); font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; color: var(--bkm-copper); }
.bkm-hero h1 { font-size: clamp(1.9rem, 4.2vw, 3rem); }
.bkm-hero__deck { font-size: 1.1rem; color: var(--bkm-ink2); max-width: 34rem; }
.bkm-hero__fig { margin: 0; }
.bkm-hero__fig img { border-bottom: 3px solid var(--bkm-copper); }
.bkm-hero__fig figcaption { font-size: .78rem; color: var(--bkm-ink2); padding-top: .5rem; }
.bkm-cta { display: flex; gap: .8rem; flex-wrap: wrap; margin-top: 1.2rem; }
.bkm-btn { font-family: var(--bkm-mono); font-size: .74rem; text-transform: uppercase; letter-spacing: .06em; padding: .65rem 1rem; text-decoration: none; border: 1.5px solid var(--bkm-ink); }
.bkm-btn--solid { background: var(--bkm-ink); color: #fff; }
.bkm-btn--solid:hover { background: var(--bkm-copper); border-color: var(--bkm-copper); color: #fff; }
.bkm-btn--ghost { color: var(--bkm-ink); }
.bkm-btn--ghost:hover { border-color: var(--bkm-copper); color: var(--bkm-copper); }

/* tiles */
.bkm-tiles { list-style: none; margin: 1.6rem 0 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr)); gap: 1.2rem; counter-reset: tile; }
.bkm-tile { border-top: 3px solid var(--bkm-sec); background: #fff; padding-bottom: 1rem; }
.bkm-tile__fig { margin: 0 0 .8rem; }
.bkm-tile__fig img { aspect-ratio: 16 / 9; object-fit: cover; }
.bkm-tile__no { font-family: var(--bkm-mono); font-size: .7rem; color: var(--bkm-concrete); letter-spacing: .1em; }
.bkm-tile h3 { font-size: 1.14rem; }
.bkm-tile h3 a { text-decoration: none; }
.bkm-tile__note { font-size: .88rem; color: var(--bkm-ink2); padding: 0 1rem; margin: 0; }
.bkm-tile__meta { font-family: var(--bkm-mono); font-size: .66rem; text-transform: uppercase; letter-spacing: .06em; color: var(--bkm-concrete); padding: 0 1rem; }
.bkm-tile h3, .bkm-tile__no { padding-inline: 1rem; }

/* departs (restored) */
.bkm-departs { list-style: none; margin: 1.4rem 0 0; padding: 0; }
.bkm-depart { display: grid; grid-template-columns: 9rem 1fr; gap: 1.2rem; padding: 1rem 0; border-top: 1px solid var(--bkm-rule); align-items: start; }
.bkm-depart__tag { font-family: var(--bkm-mono); font-size: .66rem; text-transform: uppercase; letter-spacing: .06em; color: var(--bkm-copper); }
.bkm-depart h3 { font-size: 1.1rem; margin-bottom: .3rem; }
.bkm-depart__amorce { font-size: .9rem; color: var(--bkm-ink2); margin: 0; }

/* footer */
.bkm-foot { background: var(--bkm-night); color: var(--bkm-night-ink); padding: 2.6rem 0 1.4rem; }
.bkm-foot__grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); gap: 2rem; }
.bkm-foot h2 { font-size: .82rem; font-family: var(--bkm-mono); text-transform: uppercase; letter-spacing: .08em; color: #E9A16A; }
.bkm-foot p { font-size: .88rem; color: #B7C8D5; }
.bkm-foot ul { list-style: none; margin: 0; padding: 0; }
.bkm-foot li { padding: .25rem 0; }
.bkm-foot a { color: #DCE6EE; }
.bkm-foot__base { display: flex; gap: 1rem; justify-content: space-between; flex-wrap: wrap; margin-top: 2rem; padding-top: 1rem; border-top: 1px solid var(--bkm-night-rule); font-family: var(--bkm-mono); font-size: .68rem; color: #8FA6B6; }

/* 404 */
.bkm-404 { padding: 4rem 0; text-align: center; }
.bkm-404 h1 { font-size: 2rem; }

@media (max-width: 60rem) {
  .bkm-page { grid-template-columns: 1fr; }
  .bkm-hero__grid { grid-template-columns: 1fr; }
  .bkm-nav__handle { display: inline-block; }
  .bkm-nav ul { display: none; width: 100%; }
  .bkm-nav__toggle:checked ~ ul { display: flex; flex-direction: column; gap: .5rem; padding-top: .8rem; }
  .bkm-depart { grid-template-columns: 1fr; gap: .3rem; }
}