:root{
  --bg:#0b1f3a; --bg2:#11335c; --card:#ffffff; --ink:#15233b; --muted:#5b6b85;
  --line:#e6ebf2; --brand:#1763c9; --brand-d:#0f4a9c; --accent:#ffb703;
  --good:#3ec70b; --warn:#ff8c00; --bad:#e53935; --radius:16px;
  --shadow:0 6px 24px rgba(16,42,82,.10); --shadow-sm:0 2px 8px rgba(16,42,82,.08);
  --max:1120px;
  --page-bg:#f3f6fb; --nav-bg:#ffffff; --prose-ink:#2c3a52; --ghost-bg:#eef3fb;
  --hero1:#0b1f3a; --hero2:#11335c; --hero3:#1c4f8a;
}
/* Thème sombre : appliqué si l'utilisateur le choisit, OU selon le système
   tant qu'il n'a pas forcé le mode clair. */
:root[data-theme="dark"],
:root[data-theme="dark"] body{color-scheme:dark}
:root[data-theme="dark"]{
  --card:#172033; --ink:#e7edf6; --muted:#94a3bd; --line:#27344b;
  --brand:#5b9bf0; --brand-d:#86b6f6; --shadow:0 6px 24px rgba(0,0,0,.4);
  --shadow-sm:0 2px 8px rgba(0,0,0,.35);
  --page-bg:#0c1320; --nav-bg:#0f1827; --prose-ink:#c2cde0; --ghost-bg:#1b2740;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --card:#172033; --ink:#e7edf6; --muted:#94a3bd; --line:#27344b;
    --brand:#5b9bf0; --brand-d:#86b6f6; --shadow:0 6px 24px rgba(0,0,0,.4);
    --shadow-sm:0 2px 8px rgba(0,0,0,.35);
    --page-bg:#0c1320; --nav-bg:#0f1827; --prose-ink:#c2cde0; --ghost-bg:#1b2740;
    color-scheme:dark;
  }
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:"Segoe UI",Roboto,-apple-system,BlinkMacSystemFont,Helvetica,Arial,sans-serif;
  color:var(--ink);background:var(--page-bg);line-height:1.55;font-size:16px;
  transition:background .2s,color .2s;
}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%}
.wrap{max-width:var(--max);margin:0 auto;padding:0 18px}

/* En-tête */
.topbar{background:linear-gradient(135deg,var(--bg) 0%,var(--bg2) 100%);color:#fff}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 18px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:1.25rem;letter-spacing:-.3px}
.brand:hover{text-decoration:none}
.brand .logo{font-size:1.5rem}
.brand small{display:block;font-weight:500;font-size:.7rem;opacity:.8;letter-spacing:.2px}
.theme-toggle{
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);color:#fff;
  width:42px;height:42px;border-radius:50%;font-size:1.2rem;cursor:pointer;line-height:1;
  display:flex;align-items:center;justify-content:center;flex:0 0 auto;transition:background .15s
}
.theme-toggle:hover{background:rgba(255,255,255,.22)}
.nav{background:var(--nav-bg);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50;box-shadow:var(--shadow-sm)}
.nav .wrap{display:flex;gap:4px;overflow-x:auto;scrollbar-width:none}
.nav .wrap::-webkit-scrollbar{display:none}
.nav a{
  white-space:nowrap;padding:13px 14px;color:var(--muted);font-weight:600;font-size:.92rem;
  border-bottom:3px solid transparent
}
.nav a:hover{color:var(--brand);text-decoration:none}
.nav a.active{color:var(--brand-d);border-bottom-color:var(--brand)}

/* Hero météo actuelle */
.hero{
  background:linear-gradient(135deg,var(--bg) 0%,var(--bg2) 55%,#1c4f8a 100%);
  color:#fff;position:relative;overflow:hidden
}
.hero.is-night{background:linear-gradient(135deg,#060f1f 0%,#0c2240 60%,#13345c 100%)}
.hero .wrap{padding:26px 18px 30px}
.hero h1{margin:0 0 2px;font-size:1.5rem;font-weight:800;letter-spacing:-.4px}
.hero .sub{opacity:.85;font-size:.95rem;margin-bottom:18px}
.now{display:flex;align-items:center;gap:22px;flex-wrap:wrap}
.now .big-ico{font-size:5rem;line-height:1;filter:drop-shadow(0 4px 8px rgba(0,0,0,.25))}
.now .temp{font-size:4.2rem;font-weight:800;line-height:1;letter-spacing:-2px}
.now .temp sup{font-size:1.6rem;font-weight:600;vertical-align:super;opacity:.85}
.now .desc{font-size:1.2rem;font-weight:700}
.now .feels{opacity:.85;font-size:.95rem}
.now-meta{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
.chip{
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.18);
  border-radius:999px;padding:7px 13px;font-size:.85rem;display:flex;gap:6px;align-items:center;
  backdrop-filter:blur(4px)
}
.chip b{font-weight:700}

/* Sections & cartes */
main{padding:22px 0 40px}
section{margin:0 0 26px}
.sec-title{font-size:1.2rem;font-weight:800;margin:0 0 12px;display:flex;align-items:center;gap:8px}
.sec-title .i{font-size:1.25rem}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm)}
.card.pad{padding:18px}
.grid{display:grid;gap:14px}
.grid.stats{grid-template-columns:repeat(auto-fill,minmax(150px,1fr))}
.stat{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px}
.stat .k{font-size:.8rem;color:var(--muted);font-weight:600;display:flex;gap:6px;align-items:center}
.stat .v{font-size:1.45rem;font-weight:800;margin-top:3px}
.stat .v small{font-size:.85rem;color:var(--muted);font-weight:600}

/* Prévisions horaires (scroll) */
.hours{display:flex;gap:10px;overflow-x:auto;padding:4px 2px 10px;scrollbar-width:thin}
.hour{
  flex:0 0 auto;width:78px;text-align:center;background:var(--card);border:1px solid var(--line);
  border-radius:12px;padding:12px 6px
}
.hour .h{font-size:.82rem;color:var(--muted);font-weight:700}
.hour .ico{font-size:1.7rem;margin:6px 0}
.hour .t{font-weight:800;font-size:1.05rem}
.hour .p{font-size:.74rem;color:var(--brand);font-weight:700;margin-top:3px}
.hour .p.dry{color:var(--muted);opacity:.5}

/* Prévisions 7 jours */
.days{display:flex;flex-direction:column;gap:2px}
.day{
  display:grid;grid-template-columns:1.4fr .6fr 2fr 1fr;align-items:center;gap:10px;
  padding:13px 14px;border-bottom:1px solid var(--line)
}
.day:last-child{border-bottom:none}
.day .dname{font-weight:700;text-transform:capitalize}
.day .dname small{display:block;color:var(--muted);font-weight:500;font-size:.78rem}
.day .dico{font-size:1.7rem;text-align:center}
.day .dbar{display:flex;align-items:center;gap:9px}
.day .dbar .mn{color:var(--muted);font-weight:700;width:34px;text-align:right}
.day .dbar .mx{font-weight:800;width:34px}
.day .track{flex:1;height:6px;border-radius:6px;background:linear-gradient(90deg,#6cb6ff,#ffd166,#ff6b6b);opacity:.65}
.day .drain{font-size:.82rem;color:var(--brand);font-weight:700;text-align:right}
.day .drain.dry{color:var(--muted);opacity:.55}

/* Radar */
#radar-map{height:460px;width:100%;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:#dde6f0}
.radar-ctrl{display:flex;align-items:center;gap:12px;margin-top:12px;flex-wrap:wrap}
.btn{background:var(--brand);color:#fff;border:none;border-radius:10px;padding:9px 16px;font-weight:700;cursor:pointer;font-size:.92rem}
.btn:hover{background:var(--brand-d)}
.btn.ghost{background:var(--ghost-bg);color:var(--brand-d)}
#radar-time{font-weight:700;color:var(--muted)}

/* AQI / pollens */
.aqi-hero{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.aqi-dial{
  width:108px;height:108px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  flex-direction:column;color:#fff;font-weight:800;box-shadow:var(--shadow)
}
.aqi-dial .n{font-size:2.1rem;line-height:1}
.aqi-dial .l{font-size:.72rem;font-weight:700;opacity:.95}
.bars{display:grid;gap:10px;grid-template-columns:repeat(auto-fill,minmax(190px,1fr))}
.bar .lab{display:flex;justify-content:space-between;font-size:.85rem;font-weight:700;margin-bottom:4px}
.bar .lab span{color:var(--muted);font-weight:600}
.bar .track2{height:8px;background:var(--line);border-radius:8px;overflow:hidden}
.bar .fill{height:100%;border-radius:8px}

/* Résumé « En bref » (GEO — citable par les IA) */
.tldr{
  background:var(--card);border:1px solid var(--line);border-left:4px solid var(--brand);
  border-radius:12px;padding:14px 16px;margin:0 0 22px;color:var(--prose-ink);
  font-size:1.02rem;line-height:1.6;box-shadow:var(--shadow-sm)
}
.tldr strong{color:var(--ink)}

/* Contenu éditorial / SEO */
.prose{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-sm)}
.prose h2{font-size:1.25rem;margin:18px 0 8px}
.prose h2:first-child{margin-top:0}
.prose h3{font-size:1.05rem;margin:16px 0 6px}
.prose p{margin:0 0 12px;color:var(--prose-ink)}
.prose ul{margin:0 0 12px;padding-left:20px}
.prose li{margin:4px 0;color:var(--prose-ink)}
.faq dt{font-weight:800;margin-top:14px}
.faq dd{margin:4px 0 0;color:var(--prose-ink)}

/* Liens internes */
.linkgrid{display:grid;gap:10px;grid-template-columns:repeat(auto-fill,minmax(220px,1fr))}
.linkgrid a{display:block;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:13px 15px;font-weight:700;box-shadow:var(--shadow-sm)}
.linkgrid a:hover{border-color:var(--brand);text-decoration:none}
.linkgrid a small{display:block;color:var(--muted);font-weight:500;font-size:.82rem;margin-top:2px}

/* Pied de page */
footer{background:#0b1f3a;color:#c8d4e6;margin-top:30px}
footer .wrap{padding:30px 18px;display:grid;gap:22px;grid-template-columns:repeat(auto-fit,minmax(180px,1fr))}
footer h4{color:#fff;font-size:.95rem;margin:0 0 10px}
footer a{color:#c8d4e6;font-size:.9rem;display:block;padding:3px 0}
footer a:hover{color:#fff}
footer .legal{grid-column:1/-1;border-top:1px solid rgba(255,255,255,.12);padding-top:16px;font-size:.82rem;opacity:.8}
.update{font-size:.82rem;color:var(--muted);margin-top:6px}

@media(max-width:640px){
  .now .temp{font-size:3.4rem}
  .now .big-ico{font-size:4rem}
  .day{grid-template-columns:1.2fr .5fr 1.6fr .8fr}
  .hero h1{font-size:1.25rem}
}