/* Thème « Carte du ciel », palette « bleu de Prusse » – la nuit d'automne au-dessus d'Épendes */
@font-face { font-family: "Fraunces"; src: url(fonts/fraunces.woff2) format("woff2"); font-weight: 100 900; font-display: swap; }
@font-face { font-family: "Atkinson"; src: url(fonts/atkinson-400.woff2) format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Atkinson"; src: url(fonts/atkinson-700.woff2) format("woff2"); font-weight: 700; font-display: swap; }
:root {
  --nuit: #0f2638; --nuit-2: #163249; --etoile: #eef2f0; --or: #e9c46a; --trait: #7fb0c6; --brume: #a7bfca;
  --bg: var(--nuit); --fg: var(--etoile); --muted: var(--brume); --line: #244559;
  --link: #a6d6ea; --link-hover: var(--or); --focus: var(--or);
  --display: "Fraunces", Georgia, serif; --body: "Atkinson", system-ui, sans-serif;
}

/* ---- Structure commune (identique pour tous les thèmes) ---- */
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; min-height: 100vh; display: flex; flex-direction: column; background: var(--bg); color: var(--fg); font-family: var(--body); font-size: var(--fs, 18px); line-height: var(--lh, 1.6); }
.wrap { max-width: var(--wrap, 1040px); margin: 0 auto; padding-left: 20px; padding-right: 20px; }
a { color: var(--link); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { color: var(--link-hover); }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
img, video { max-width: 100%; height: auto; }
.muted { color: var(--muted); }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 8px; background: var(--focus); color: var(--bg); padding: 6px 10px; z-index: 10; }

.header-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-top: 16px; padding-bottom: 8px; }
.brand { color: var(--fg); text-decoration: none; display: flex; gap: 10px; align-items: center; }
.langs { display: flex; gap: 4px; font-size: .85rem; }
.langs a, .langs span { padding: 3px 7px; text-decoration: none; }
.menu ul { list-style: none; margin: 0; padding: 4px 0 14px; display: flex; flex-wrap: wrap; gap: 4px 22px; }
.menu a { text-decoration: none; }

main.wrap { flex: 1 0 auto; width: 100%; padding-top: 40px; padding-bottom: 64px; }
.page { max-width: 68ch; }
h1, h2, h3 { font-family: var(--display); line-height: 1.15; }
h2 { margin: 2.2rem 0 .6rem; }
h3 { margin: 1.6rem 0 .4rem; }
p, ul, ol { margin: .5rem 0 1rem; }
li { margin: .25rem 0; }

table { border-collapse: collapse; width: 100%; margin: .5rem 0 1rem; }
th, td { text-align: left; padding: .45rem .8rem .45rem 0; border-bottom: 1px solid var(--line); vertical-align: top; font-weight: normal; }
caption { text-align: left; font-weight: 700; padding-bottom: .35rem; }
table.hours td { white-space: nowrap; text-align: right; font-variant-numeric: tabular-nums; }

.note { margin: 1.2rem 0 1.6rem; padding: 14px 18px; }
.note p { margin: 0; }
.request { margin: 2.5rem 0 1rem; padding: 20px 24px; }
.button { display: inline-block; text-decoration: none; padding: 10px 18px; font-weight: 700; }
address.card { font-style: normal; padding: 18px 22px; margin: 1rem 0 1.5rem; }

.hero { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: 32px; align-items: center; margin-bottom: 40px; }
.hero h1 { margin: 0 0 .8rem; }
.lead { font-size: 1.2rem; margin: 0; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); gap: 20px; margin: 2rem 0; }
.card { padding: 20px 24px; }
.card h2 { margin-top: 0; }

.site-footer { padding: 32px 0; font-size: .9rem; }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; }

@media (max-width: 760px) {
  .hero { grid-template-columns: 1fr; gap: 20px; }
  :root { --fs: 17px; }
}
@media print {
  body { background: #fff; color: #000; }
  .site-header nav, .button, .skip, .hero-art { display: none; }
}

.site-header { border-bottom: 1px solid var(--line); }
.brand { font-family: var(--display); font-size: 1.3rem; font-weight: 600; font-variation-settings: "SOFT" 100, "opsz" 48; }
.brand-mark { color: var(--or); }
.langs a { color: var(--brume); }
.langs span { color: var(--or); border-bottom: 2px solid var(--or); }
.menu a { color: var(--brume); }
.menu a:hover, .menu a[aria-current="page"] { color: var(--etoile); }
h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); font-weight: 500; font-variation-settings: "SOFT" 100, "WONK" 1, "opsz" 144; color: var(--etoile); letter-spacing: -.01em; margin: 0 0 1rem; }
h2 { font-size: 1.6rem; font-weight: 500; font-variation-settings: "SOFT" 100, "opsz" 72; color: var(--or); }
h3 { font-size: 1.2rem; font-weight: 600; }
.lead { color: var(--brume); font-family: var(--display); font-style: italic; font-variation-settings: "SOFT" 100; }
.sky-chart { width: 100%; height: auto; display: block; }
.sky-chart .grid { stroke: var(--line); stroke-width: 1; }
.sky-chart .grid-label { fill: #4f7488; font: 12px var(--body); }
.sky-chart .figure { stroke: var(--trait); stroke-width: 1.2; opacity: .75; }
.sky-chart .star { fill: var(--etoile); }
.sky-chart .galaxy { fill: none; stroke: var(--or); stroke-width: 1.2; }
.sky-chart .obj-label { fill: var(--or); font: italic 13px var(--display); }
.sky-chart .con-label { fill: var(--brume); font: italic 17px var(--display); letter-spacing: .02em; }
.card, .note, .request, address.card { background: var(--nuit-2); border: 1px solid var(--line); border-radius: 4px; }
.note { border-left: 3px solid var(--or); }
.card h2 { font-size: 1.3rem; }
table.hours td { color: var(--or); font-family: var(--display); font-size: 1.08em; font-variation-settings: "opsz" 24; }
.button { background: var(--or); color: var(--nuit); border-radius: 3px; }
.button:hover { color: var(--nuit); background: #f1d48e; }
.site-footer { border-top: 1px solid var(--line); background: #0b1d2b; color: var(--brume); }

.site-footer .muted { color: inherit; opacity: .8; }

@media (max-width: 760px) { .hero { grid-template-columns: 1fr; } }

/* ---- Logo ---- */
.brand-logo { height: 56px; width: auto; }

@media (max-width: 760px) {
  .brand-logo { height: 44px; }
}

/* ---- Ligne « Vendredi soir » sous l'en-tête (tous formats) ---- */
.next-visit { background: #0b1d2b; border-top: 1px solid var(--line); }
.next-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding-top: 8px; padding-bottom: 8px; font-size: .95rem; }
.next-row strong { color: var(--or); font-family: var(--display); font-weight: 600; font-size: 1.05em; }
.next-cta { color: var(--nuit); background: var(--or); text-decoration: none; font-weight: 700; padding: 5px 14px; border-radius: 3px; white-space: nowrap; }
.next-cta:hover { color: var(--nuit); background: var(--or2, #f1d48e); }

/* ---- Inscription aux visites publiques (fragments du service de réservation) ---- */
.obs-sessions { list-style: none; padding: 0; margin: 1rem 0 1.5rem; }
.obs-session { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 2px 16px; padding: .7rem 0; border-bottom: 1px solid var(--line); }
.obs-session__title { grid-column: 1 / -1; color: var(--brume); font-size: .85rem; text-transform: uppercase; letter-spacing: .04em; }
.obs-session__when { font-family: var(--display); font-size: 1.1rem; color: var(--etoile); }
.obs-session__status { color: var(--or); white-space: nowrap; text-align: right; }
.obs-session__message, .obs-session__note { grid-column: 1 / -1; margin: .4rem 0 0; }
.obs-session__note { color: var(--muted); font-size: .9rem; }
.obs-state--not_yet_open .obs-session__status, .obs-state--closed .obs-session__status { color: var(--muted); }
.obs-state--cancelled .obs-session__when { text-decoration: line-through; color: var(--muted); }
.obs-form { display: grid; gap: .35rem; max-width: 34rem; margin: 1.5rem 0; padding: 20px 24px; background: var(--nuit-2); border: 1px solid var(--line); border-radius: 4px; }
.obs-form h3 { margin: 0 0 .4rem; }
.obs-form label { margin-top: .5rem; font-weight: 700; }
.obs-form input[type="text"], .obs-form input[type="email"], .obs-form select {
  font: inherit; color: var(--etoile); background: var(--nuit); border: 1px solid var(--line); border-radius: 3px; padding: 8px 10px; width: 100%; }
.obs-form input[aria-invalid="true"] { border-color: #e98a6a; }
.obs-form .obs-form__consent { display: flex; gap: 10px; align-items: flex-start; font-weight: normal; }
.obs-form .obs-form__consent input { margin-top: .35rem; accent-color: var(--or); }
.obs-form__note, .obs-form__privacy { color: var(--muted); font-size: .9rem; margin: .4rem 0 0; }
.obs-form .button { justify-self: start; margin-top: .8rem; border: 0; font: inherit; font-weight: 700; cursor: pointer; }
/* Champ piège anti-spam : invisible pour les personnes, pas pour les robots */
.obs-hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.obs-field-error { color: #f0a58c; margin: 0; font-size: .9rem; }
.obs-result--error { border-left-color: #e98a6a; }
.obs-registration th { width: 12rem; color: var(--muted); }
.obs-action { margin: 1.2rem 0; }
.obs-button-secondary { font: inherit; color: var(--etoile); background: transparent; border: 1px solid var(--trait); border-radius: 3px; padding: 9px 16px; cursor: pointer; }
.obs-button-secondary:hover { border-color: var(--or); color: var(--or); }
@media (max-width: 760px) {
  .obs-session { grid-template-columns: 1fr; }
  .obs-session__status { text-align: left; }
  .obs-form { padding: 16px; }
}

/* ---- Navigation mobile : bouton Menu (sans JavaScript, <details>) ---- */
.burger { display: none; }
.site-header { position: relative; }

@media (max-width: 760px) {
  .menu { display: none; }
  .burger { display: block; }
  .header-row { gap: 10px; padding-bottom: 12px; }
  .brand { flex: 1; font-size: 1rem; min-width: 0; gap: 6px; }
  .brand span:last-child { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
  .langs { gap: 0; }
  .burger summary { list-style: none; cursor: pointer; display: flex; align-items: center; gap: 8px;
    padding: 8px 12px; border: 1px solid var(--line); border-radius: 6px; color: var(--etoile); font-weight: 700; font-size: .95rem; }
  .burger summary::-webkit-details-marker { display: none; }
  .burger-icon, .burger-icon::before, .burger-icon::after { display: block; width: 18px; height: 2px; background: var(--or); border-radius: 1px; position: relative; }
  .burger-icon::before, .burger-icon::after { content: ""; position: absolute; left: 0; }
  .burger-icon::before { top: -6px; } .burger-icon::after { top: 6px; }
  .burger[open] .burger-icon { background: transparent; }
  .burger[open] .burger-icon::before { top: 0; transform: rotate(45deg); }
  .burger[open] .burger-icon::after { top: 0; transform: rotate(-45deg); }
  .burger-icon-svg { width: 24px; height: 24px; }
  .burger-panel { position: absolute; left: 0; right: 0; top: 100%; z-index: 20; background: var(--nuit-2);
    border-bottom: 1px solid var(--line); box-shadow: 0 18px 30px rgba(5, 15, 25, .45); }
  .burger-panel ul { list-style: none; margin: 0; padding: 6px 0; }
  .burger-panel a { display: block; padding: 14px 20px; color: var(--etoile); text-decoration: none; font-size: 1.1rem; border-bottom: 1px solid var(--line); }
  .burger-panel li:last-child a { border-bottom: 0; }
  .burger-panel a[aria-current="page"] { color: var(--or); }
}
@media (max-width: 430px) {
  .burger-label { position: absolute; left: -9999px; }
  .burger summary { padding: 9px 10px; }
  /* Le logo porte déjà le nom de l'Observatoire : le libellé texte devient redondant
     et se tronquait trop ("Observ…") une fois le logo agrandi. */
  .brand span:last-child { position: absolute; left: -9999px; }
}
@media (prefers-reduced-motion: no-preference) {
  .burger-icon::before, .burger-icon::after { transition: transform .2s ease, top .2s ease; }
}