/* ============================================================
   arriere-plan.com — feuille de style (mobile-first, dark, premium).
   CSS maison, zéro framework. Bumper $css_v (domains/arriereplan.php) à chaque modif.
   ============================================================ */
:root{
  --bg:#0E1320; --bg-2:#141A2B; --panel:#1B2238; --panel-2:#222B46;
  --line:#2C3754; --fg:#EEF1F8; --muted:#A6AFC7; --muted-2:#7E89A6;
  --accent:#C06C84; --accent-2:#F09819; --accent-3:#6C5B7B;
  --radius:18px; --radius-lg:26px; --maxw:1120px;
  --grad-brand:linear-gradient(90deg,#6C5B7B,#C06C84,#F09819);
  --shadow:0 12px 34px rgba(0,0,0,.42); --shadow-sm:0 4px 14px rgba(0,0,0,.28);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:
    radial-gradient(1100px 500px at 80% -8%, rgba(192,108,132,.18), transparent 60%),
    radial-gradient(900px 480px at -5% 4%, rgba(108,91,123,.20), transparent 55%),
    var(--bg);
  color:var(--fg);font-family:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;min-height:100vh;
}
h1,h2,h3,.brand span{font-family:"Space Grotesk","Inter",system-ui,sans-serif;line-height:1.18;letter-spacing:-.01em}
h1{font-size:clamp(1.7rem,6vw,2.7rem);margin:.2em 0 .35em;font-weight:700}
h2{font-size:clamp(1.25rem,4vw,1.7rem);margin:0 0 .6em;font-weight:600}
a{color:#E3B7C6;text-decoration:none}
a:hover{text-decoration:underline}
img,svg{max-width:100%}
.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 16px}
.block{margin:40px auto}
.lead{font-size:1.08rem;color:var(--muted);max-width:60ch}
.muted{color:var(--muted)}
.more{margin-top:14px;font-weight:600}
.skip{position:absolute;left:-999px;top:0;background:var(--accent);color:#fff;padding:10px 14px;border-radius:0 0 10px 0;z-index:100}
.skip:focus{left:0}
:focus-visible{outline:3px solid var(--accent-2);outline-offset:2px;border-radius:6px}

/* ---------- Header / nav ---------- */
.site-header{position:sticky;top:0;z-index:40;background:rgba(14,19,32,.82);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.hdr{display:flex;align-items:center;justify-content:space-between;height:62px}
.brand{display:inline-flex;align-items:center;gap:9px;color:var(--fg);font-weight:700;font-size:1.18rem}
.brand:hover{text-decoration:none}
.brand b{background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent}
.nav-toggle{display:inline-flex;flex-direction:column;gap:5px;background:none;border:0;padding:10px;cursor:pointer}
.nav-toggle span{width:24px;height:2px;background:var(--fg);border-radius:2px;transition:.2s}
.site-nav{display:none}
.site-nav ul{list-style:none;margin:0;padding:8px 16px 14px;display:flex;flex-direction:column;gap:2px}
.site-nav a{display:block;color:var(--fg);font-weight:600;padding:12px 10px;border-radius:12px}
.site-nav a:hover{background:var(--panel);text-decoration:none}
body.nav-open .site-nav{display:block;position:absolute;left:0;right:0;top:62px;background:var(--bg-2);border-bottom:1px solid var(--line);box-shadow:var(--shadow)}

/* ---------- Boutons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:600;font-size:1rem;
  padding:13px 20px;border-radius:14px;border:1px solid transparent;cursor:pointer;min-height:48px}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:var(--shadow-sm)}
.btn-primary:hover{filter:brightness(1.07);text-decoration:none}
.btn-ghost{background:var(--panel);color:var(--fg);border-color:var(--line)}
.btn-ghost:hover{background:var(--panel-2);text-decoration:none}

/* ---------- Hero ---------- */
.hero{padding:26px 0 8px}
.hero-in{display:flex;flex-direction:column;gap:26px}
.hero-txt h1{margin-top:0}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:18px}

/* ---------- Stage (aperçu + contrôles + export) ---------- */
.stage{display:flex;flex-direction:column;gap:20px;background:var(--panel);border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:18px;box-shadow:var(--shadow)}
.preview-col{display:flex;justify-content:center}
.frame{position:relative;background:#05070d;box-shadow:var(--shadow);overflow:hidden}
.frame-phone{width:min(260px,74vw);aspect-ratio:1080/2340;border-radius:34px;padding:10px;border:1px solid #2a3350}
.frame-phone .screen{border-radius:26px}
.frame-wide{width:min(460px,92%);aspect-ratio:16/9;border-radius:16px;padding:8px;border:1px solid #2a3350}
.frame-wide .screen{border-radius:10px}
.screen{position:relative;width:100%;height:100%;overflow:hidden;background:#0B1F3A}
.screen canvas{position:absolute;inset:0;width:100%;height:100%;display:block}
.motif-svg{position:absolute;inset:0}

.control-col{display:flex;flex-direction:column;gap:18px}
.controls{display:flex;flex-direction:column;gap:14px}
.ctrl{display:flex;flex-direction:column;gap:7px}
.ctrl>span{font-size:.92rem;color:var(--muted);font-weight:600}
.ctrl>span b{color:var(--fg)}
.ctrl-color{flex-direction:row;align-items:center;justify-content:space-between;gap:12px;
  background:var(--panel-2);border:1px solid var(--line);border-radius:14px;padding:10px 14px}
.ctrl-color>span{color:var(--fg)}
input[type=color]{-webkit-appearance:none;appearance:none;width:52px;height:40px;border:0;background:none;cursor:pointer;padding:0}
input[type=color]::-webkit-color-swatch-wrapper{padding:0}
input[type=color]::-webkit-color-swatch{border:2px solid rgba(255,255,255,.25);border-radius:10px}
input[type=color]::-moz-color-swatch{border:2px solid rgba(255,255,255,.25);border-radius:10px}
.ctrl-color-big input[type=color]{width:84px;height:48px}
.ctrl-hex{margin:0;color:var(--muted)}
.ctrl-hex b{color:var(--fg);font-variant-numeric:tabular-nums}
input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:8px;border-radius:8px;background:var(--panel-2);outline-offset:4px}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:26px;height:26px;border-radius:50%;background:var(--accent);border:3px solid #fff;cursor:pointer;box-shadow:var(--shadow-sm)}
input[type=range]::-moz-range-thumb{width:24px;height:24px;border-radius:50%;background:var(--accent);border:3px solid #fff;cursor:pointer}
.ctrl-seg{gap:8px}
.seg{display:flex;background:var(--panel-2);border:1px solid var(--line);border-radius:12px;padding:4px;gap:4px}
.seg-b{flex:1;background:none;border:0;color:var(--muted);font-weight:600;padding:10px;border-radius:9px;cursor:pointer;min-height:42px}
.seg-b[aria-pressed=true]{background:var(--accent);color:#fff}

.export{border-top:1px solid var(--line);padding-top:16px}
.export-h{margin:0 0 10px;font-weight:700;font-family:"Space Grotesk",sans-serif}
.res-chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.chip{background:var(--panel-2);border:1px solid var(--line);color:var(--fg);font-weight:600;font-size:.9rem;
  padding:9px 13px;border-radius:999px;cursor:pointer;min-height:40px}
.chip[aria-pressed=true]{background:#fff;color:#14182a;border-color:#fff}
.btn-dl{display:flex;align-items:center;justify-content:center;gap:8px;width:100%;background:var(--grad-brand);
  color:#fff;font-weight:700;padding:15px;border-radius:14px;min-height:52px;box-shadow:var(--shadow-sm)}
.btn-dl:hover{filter:brightness(1.07);text-decoration:none}
.ns-note{background:var(--panel-2);border:1px solid var(--line);border-radius:12px;padding:12px 14px;color:var(--muted);font-size:.92rem;margin:0}

/* ---------- Grilles / cartes ---------- */
.grid{display:grid;gap:14px}
.grid-preset{grid-template-columns:repeat(2,1fr)}
.grid-swatch{grid-template-columns:repeat(2,1fr)}
.grid-visio{grid-template-columns:1fr}
.rubriques{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}

.card{display:flex;flex-direction:column;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;color:var(--fg);box-shadow:var(--shadow-sm);transition:transform .15s,border-color .15s}
.card:hover{text-decoration:none;transform:translateY(-3px);border-color:var(--accent)}
.card-preset .card-thumb{aspect-ratio:16/10}
.grid-visio .card-preset .card-thumb{aspect-ratio:16/9}
.grid-swatch .card-thumb{aspect-ratio:4/3}
.card-thumb{position:relative;width:100%;display:block;overflow:hidden;background:#0B1F3A}
.card-name{padding:11px 13px 3px;font-weight:600;font-size:.98rem}
.card-sub{padding:0 13px 12px;color:var(--muted-2);font-size:.82rem;font-variant-numeric:tabular-nums}
.card-preset .card-name,.card-preset .card-sub{padding-left:13px}

.card-rub{padding:16px}
.card-rub .rub-ico{display:block;width:100%;aspect-ratio:16/8;border-radius:12px;overflow:hidden;margin-bottom:12px;position:relative}
.rub-t{display:block;font-family:"Space Grotesk",sans-serif;font-weight:700;font-size:1.1rem;margin-bottom:4px}
.rub-d{display:block;color:var(--muted);font-size:.9rem}

/* ---------- Prose / fil d'Ariane / légal ---------- */
.prose{max-width:72ch}
.prose p{color:#D7DCEC}
.detail-prose{margin-top:22px}
.crumbs{margin:14px 0 6px;font-size:.86rem}
.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:6px;margin:0;padding:0;color:var(--muted-2)}
.crumbs li+li::before{content:"/";margin-right:6px;color:var(--muted-2)}
.hexline{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.hx{display:inline-block;background:var(--panel-2);border:1px solid var(--line);border-radius:8px;
  padding:5px 10px;font-family:ui-monospace,"SFMono-Regular",Menlo,monospace;font-size:.86rem;color:var(--fg)}
.page-legal h2{margin-top:1.4em}
.page-404{text-align:center;padding:40px 16px}

/* ---------- Guides (hub + article) ---------- */
.grid-guides{grid-template-columns:1fr;gap:14px}
.card-guide{padding:16px 17px;gap:5px}
.card-guide:hover{border-color:var(--accent)}
.guide-name{display:block;font-family:"Space Grotesk",sans-serif;font-weight:700;font-size:1.06rem;line-height:1.25}
.guide-sub{display:block;color:var(--muted);font-size:.9rem;margin-top:4px}
.guide-go{display:block;color:#E3B7C6;font-weight:600;font-size:.88rem;margin-top:10px}
.card-guide:hover .guide-go{text-decoration:underline}

.page-guide{max-width:760px}
.guide-body{max-width:72ch;margin-top:8px}
.guide-body h2{margin-top:1.5em;font-size:clamp(1.15rem,3.6vw,1.45rem)}
.guide-body p{color:#D7DCEC}
.guide-list{list-style:none;margin:.4em 0 1em;padding:0;display:flex;flex-direction:column;gap:10px}
.guide-list li{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:12px 14px;color:#D7DCEC}
.guide-list li b{color:var(--fg)}
.small{font-size:.85rem}

.guide-faq{max-width:72ch;margin:34px auto 0;padding:0 0 4px}
.guide-faq h2{font-size:clamp(1.2rem,3.6vw,1.5rem);margin-bottom:.5em}
.faq-item{background:var(--panel);border:1px solid var(--line);border-radius:12px;margin-bottom:10px;overflow:hidden}
.faq-item summary{cursor:pointer;padding:14px 16px;font-weight:600;color:var(--fg);list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";float:right;color:var(--muted);font-weight:700}
.faq-item[open] summary::after{content:"–"}
.faq-a{padding:0 16px 14px;color:var(--muted)}
.faq-a p{margin:0;color:#D7DCEC}

.guide-links{max-width:72ch;margin:30px auto 0;background:var(--panel-2);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px}
.guide-links-h{margin:0 0 10px;font-weight:700;font-family:"Space Grotesk",sans-serif}
.guide-links ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:8px 18px}
.guide-links a{color:#E3B7C6;font-weight:600}

/* ---------- Calendriers & saisons (2026-10-23) ---------- */
.frame-tab{width:min(240px,70vw);aspect-ratio:1600/2560;border-radius:24px;padding:9px;border:1px solid #2a3350}
.frame-tab .screen{border-radius:16px}
.theme-chips{display:flex;flex-wrap:wrap;gap:8px}
.chip-theme{display:inline-flex;align-items:center;gap:8px;padding:7px 12px 7px 7px}
.chip-theme .sw{width:24px;height:24px;border-radius:50%;flex:0 0 auto;border:2px solid rgba(255,255,255,.35)}
.chip-theme[aria-pressed=true] .sw{border-color:#14182a}
/* mini-grille posée sur l'aperçu SANS JS (le canvas la remplace) */
.cal-ov{position:absolute;left:8%;right:8%;top:50%;transform:translateY(-50%);padding:8px 6px;border-radius:10px;text-align:center;font-family:"Space Grotesk",sans-serif;line-height:1.2}
.frame-wide .cal-ov{left:auto;right:5%;width:36%}
.cal-ov-dark{background:rgba(0,0,0,.38)}
.cal-ov-light{background:rgba(255,255,255,.74)}
.cal-ov-t{display:block;font-weight:700;font-size:.82rem;margin-bottom:4px}
.cal-ov-g{display:grid;grid-template-columns:repeat(7,1fr);gap:2px;font-size:.56rem;font-style:normal}
.cal-ov-g i{font-style:normal;display:block;border-radius:50%;aspect-ratio:1/1;line-height:1.9}
.cal-ov-g .wd{opacity:.7;font-weight:700}
/* tableau HTML du mois */
.cal-table-wrap{max-width:560px}
.cal-table{width:100%;border-collapse:separate;border-spacing:4px;table-layout:fixed;font-variant-numeric:tabular-nums}
.cal-table caption{caption-side:top;text-align:left;color:var(--muted);font-size:.9rem;padding:0 4px 8px}
.cal-table th{color:var(--muted);font-size:.8rem;font-weight:700;padding:4px 0}
.cal-table th abbr{text-decoration:none;border:0}
.cal-table td{background:var(--panel);border:1px solid var(--line);border-radius:10px;text-align:center;vertical-align:top;padding:7px 2px;font-weight:600;font-size:.95rem;min-height:44px}
.cal-table td:empty{background:transparent;border-color:transparent}
.cal-table td.we{background:var(--bg-2);color:var(--muted)}
.cal-table td.fe{background:#3A2A12;border-color:var(--accent-2);color:#FFE7C2}
.cal-table td.fe b{display:block}
.cal-fe-n{display:block;font-size:.62rem;font-weight:500;line-height:1.15;margin-top:2px;overflow-wrap:anywhere;hyphens:auto}
.cal-h3{font-size:1.1rem;margin:22px 0 8px}
.cal-notes{margin:0;padding-left:20px;color:#D7DCEC}
.cal-notes li{margin-bottom:6px}
.cal-nav{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.cal-months{display:flex;flex-wrap:wrap;gap:8px}
.cal-month-link{display:inline-flex;align-items:center}
.cal-month-link:hover{text-decoration:none;border-color:var(--accent)}
.card-cal-g{position:absolute;inset:18% 26%;border:2px solid currentColor;border-radius:6px;opacity:.8;background:
  repeating-linear-gradient(90deg,currentColor 0 1.5px,transparent 1.5px 14.28%),
  repeating-linear-gradient(0deg,currentColor 0 1.5px,transparent 1.5px 20%)}
.rub-cal{position:absolute;inset:22% 30%;border-radius:6px;background:
  repeating-linear-gradient(90deg,rgba(255,255,255,.55) 0 2px,transparent 2px 14.28%),
  repeating-linear-gradient(0deg,rgba(255,255,255,.55) 0 2px,transparent 2px 20%);border:2px solid rgba(255,255,255,.7)}
.install-grid{display:grid;grid-template-columns:1fr;gap:12px;margin:14px 0}
.install-item{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:14px 16px}
.install-item h3{margin:0 0 6px;font-size:1.02rem}
.install-item p{margin:0;font-size:.95rem}
.install{max-width:var(--maxw)}
.install>p{max-width:72ch}
@media(min-width:720px){.install-grid{grid-template-columns:repeat(2,1fr)}}
/* 7 entrées de menu : burger jusqu'à 960 px, menu en ligne au-delà */
@media(min-width:720px) and (max-width:959px){
  .site-nav{display:none}
  .nav-toggle{display:inline-flex}
  .site-nav ul{flex-direction:column;padding:8px 16px 14px;gap:2px}
  .site-nav a{padding:12px 10px}
}
@media(min-width:960px){.site-nav a{padding:9px 11px}}

/* ---------- Pub (jamais sur l'aire d'export) ---------- */
.promo{margin:18px auto;max-width:var(--maxw);display:flex;justify-content:center}
.promo-top{margin-top:14px}

/* ---------- Footer ---------- */
.site-footer{margin-top:52px;border-top:1px solid var(--line);background:var(--bg-2)}
.foot{display:grid;grid-template-columns:1fr;gap:26px;padding:34px 16px 10px}
.foot-brand p{color:var(--muted);font-size:.92rem;max-width:40ch}
.foot-h{font-family:"Space Grotesk",sans-serif;font-weight:700;margin:0 0 10px;font-size:.95rem}
.site-footer ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.site-footer a{color:var(--muted)}
.site-footer a:hover{color:var(--fg)}
.foot-legal{color:var(--muted-2);font-size:.82rem;padding:16px;border-top:1px solid var(--line);margin:18px auto 0}

/* ---------- Tablette / desktop ---------- */
@media(min-width:720px){
  .site-nav{display:block}
  .nav-toggle{display:none}
  .site-nav ul{flex-direction:row;padding:0;gap:4px}
  .site-nav a{padding:9px 14px}
  .grid-preset{grid-template-columns:repeat(3,1fr)}
  .grid-swatch{grid-template-columns:repeat(4,1fr)}
  .grid-visio{grid-template-columns:repeat(2,1fr)}
  .grid-guides{grid-template-columns:repeat(2,1fr)}
  .rubriques{grid-template-columns:repeat(3,1fr)}
  .stage{flex-direction:row;padding:24px;gap:30px}
  .preview-col{flex:0 0 auto}
  .control-col{flex:1;min-width:0;justify-content:center}
  .foot{grid-template-columns:2fr 1fr 1fr 1fr;gap:30px}
}
@media(min-width:720px){
  .hero-in{flex-direction:row;align-items:center}
  .hero-txt{flex:1}
  .hero-stage{flex:0 1 620px;min-width:0}
}
@media(min-width:1000px){
  .grid-preset{grid-template-columns:repeat(4,1fr)}
  .grid-swatch{grid-template-columns:repeat(6,1fr)}
}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}