/* predict : « instrument de mesure ». Papier froid, encre, un seul signal orange réservé à la prévision.
   Une seule famille (Instrument Sans, axe de largeur) : étroite pour les titres et les chiffres clés,
   normale pour le texte. Les chiffres sont tabulaires partout où ils se comparent. */

:root {
  --paper: #f3f5f4;
  --surface: #ffffff;
  --ink: #111820;
  --graphite: #4a5561;
  --rule: #d3d9dc;
  --field-line: #7b8790;
  --signal: #e5560c;      /* remplissages : médiane, bandes, bouton actif */
  --signal-ink: #a33c04;  /* texte et liens orange, contraste AA sur papier et blanc */
  --real: #13784a;
  --danger: #b42318;
  --ok-bg: #e7f3ec;
  --err-bg: #fbeceb;
  --warn-bg: #fdf3e2;
  --warn-ink: #7a4a00;
  --radius: 10px;
  --font: "Instrument Sans", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  /* Light mode: pas de dégradé */
  --bg-gradient: none;
}

/* Dark mode : bleu nuit avec dégradé */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --paper: #0f172a;
    --surface: #1e293b;
    --ink: #f8fafc;
    --graphite: #94a3b8;
    --rule: #334155;
    --field-line: #475569;
    --signal: #f97316;
    --signal-ink: #ea580c;
    --real: #10b981;
    --danger: #ef4444;
    --ok-bg: rgba(6, 78, 59, 0.3);
    --err-bg: rgba(127, 29, 29, 0.3);
    --warn-bg: rgba(120, 53, 15, 0.3);
    --warn-ink: #fbbf24;
    --bg-gradient: linear-gradient(135deg, #0a1628 0%, #1a2b45 50%, #0a1628 100%);
  }
  
  /* Force dark mode for elements that need it immediately */
  :root:not([data-theme]) .site-head {
    background: #1e293b;
    border-bottom-color: #334155;
  }
  :root:not([data-theme]) .site-nav a {
    color: #94a3b8;
  }
  :root:not([data-theme]) body {
    background: linear-gradient(135deg, #0a1628 0%, #1a2b45 50%, #0a1628 100%), #0f172a;
    color: #f8fafc;
  }
}

[data-theme="dark"],
.dark {
  --paper: #0f172a;
  --surface: #1e293b;
  --ink: #f8fafc;
  --graphite: #94a3b8;
  --rule: #334155;
  --field-line: #475569;
  --signal: #f97316;
  --signal-ink: #ea580c;
  --real: #10b981;
  --danger: #ef4444;
  --ok-bg: rgba(6, 78, 59, 0.3);
  --err-bg: rgba(127, 29, 29, 0.3);
  --warn-bg: rgba(120, 53, 15, 0.3);
  --warn-ink: #fbbf24;
  /* Dégradé bleu nuit pour l'arrière-plan */
  --bg-gradient: linear-gradient(135deg, #0a1628 0%, #1a2b45 50%, #0a1628 100%);
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg-gradient), var(--paper);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.55;
  font-variation-settings: "wdth" 100;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
  min-height: 100vh;
}

main a:not([class]) { color: var(--signal-ink); text-decoration: underline; text-underline-offset: 3px; }
main a:not([class]):hover { color: var(--ink); }

/* Dark mode : liens dans main */
[data-theme="dark"] main a:not([class]),
.dark main a:not([class]) {
  color: var(--signal);
}
[data-theme="dark"] main a:not([class]):hover,
.dark main a:not([class]):hover {
  color: var(--signal-ink);
}

:focus-visible { outline: 2px solid var(--signal-ink); outline-offset: 2px; border-radius: 4px; }

code, pre, textarea.font-mono { font-family: var(--mono); font-size: 0.9em; }

table, .num, input[type="number"] { font-variant-numeric: tabular-nums; }

/* Structure */
.wrap { max-width: 72rem; margin: 0 auto; padding: 0 20px; }
.page { padding-top: 36px; padding-bottom: 96px; }
.page > * + * { margin-top: 44px; }

.site-head { 
  border-bottom: 1px solid var(--rule); 
  background: var(--surface);
}

/* Dark mode : site-head avec fond solide */
[data-theme="dark"] .site-head,
.dark .site-head {
  background: var(--surface);
  border-bottom-color: var(--rule);
}
.site-head-row { display: flex; align-items: center; gap: 24px; min-height: 64px; flex-wrap: wrap; }
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  color: var(--ink); text-decoration: none;
  font-size: 1.45rem; font-weight: 700; letter-spacing: -0.01em;
  font-variation-settings: "wdth" 75;
}
.brand:hover { color: var(--ink); }
.brand-mark { width: 34px; height: 22px; fill: none; stroke-linecap: round; stroke-linejoin: round; overflow: visible; }
.brand-mark .fan-hist { stroke: var(--ink); stroke-width: 2.2; }
.brand-mark .fan-med { stroke: var(--signal); stroke-width: 2.2; }
.brand-mark .fan-q { stroke: var(--signal); stroke-width: 1.4; opacity: 0.55; }
.site-nav { margin-left: auto; display: flex; gap: 4px; flex-wrap: wrap; }
.site-nav a {
  color: var(--graphite); text-decoration: none; font-weight: 500;
  padding: 10px 12px; border-radius: 8px; min-height: 44px; display: inline-flex; align-items: center;
}
.site-nav a:hover { color: var(--ink); background: rgba(255, 255, 255, 0.1); }

/* Dark mode : navigation */
[data-theme="dark"] .site-nav a,
.dark .site-nav a {
  color: var(--graphite);
}
[data-theme="dark"] .site-nav a:hover,
.dark .site-nav a:hover {
  background: rgba(255, 255, 255, 0.1);
}

/* Bouton de toggle dark mode */
.theme-btn {
  color: var(--graphite); background: transparent; border: none;
  padding: 10px 12px; border-radius: 8px; min-height: 44px;
  display: inline-flex; align-items: center; justify-content: center;
  cursor: pointer; transition: color 0.2s, background-color 0.2s;
}
.theme-btn:hover {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.1);
}
[data-theme="dark"] .theme-btn,
.dark .theme-btn {
  color: var(--graphite);
}
[data-theme="dark"] .theme-btn:hover,
.dark .theme-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--ink);
}

/* Bouton hamburger */
.hamburger-btn {
  display: none;
  background: transparent; border: none;
  padding: 10px 12px; border-radius: 8px;
  cursor: pointer; transition: background-color 0.2s;
  color: var(--graphite);
}
.hamburger-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--ink);
}
.hamburger-btn:focus {
  outline: 2px solid var(--signal-ink);
  outline-offset: 1px;
}

/* Menu hamburger - styles mobile */
@media (max-width: 768px) {
  .hamburger-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-left: auto;
  }
  
  .site-head-row {
    gap: 12px;
  }
  
  .site-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--surface);
    border-bottom: 1px solid var(--rule);
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    transform: translateY(-100%);
    transition: transform 0.3s ease;
    z-index: 1000;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  }
  
  .site-nav.mobile-open {
    transform: translateY(0);
  }
  
  .site-nav a {
    padding: 12px 16px;
    border-radius: 8px;
  }
  
  .site-nav a:hover {
    background: rgba(0, 0, 0, 0.08);
  }
  
  [data-theme="dark"] .site-nav,
  .dark .site-nav {
    background: var(--surface);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  }
  
  [data-theme="dark"] .site-nav a:hover,
  .dark .site-nav a:hover {
    background: rgba(255, 255, 255, 0.08);
  }
  
  .site-nav .theme-btn {
    margin-top: 8px;
    border-top: 1px solid var(--rule);
    padding-top: 12px;
  }
  
  /* Empêcher le scroll du body quand menu ouvert */
  .mobile-nav-open {
    overflow: hidden;
  }
}
@media (max-width: 768px) {
  .site-head-row { gap: 12px; }
}

/* Titres */
.page-title {
  margin: 0;
  font-size: clamp(2rem, 1.4rem + 2.6vw, 3.1rem);
  line-height: 1.05; font-weight: 650; letter-spacing: -0.02em;
  font-variation-settings: "wdth" 75;
  text-wrap: balance;
}
.section > * + * { margin-top: 16px; }
.section-title {
  margin: 0; font-size: 1.3rem; font-weight: 640; letter-spacing: -0.01em;
  font-variation-settings: "wdth" 82;
  padding-top: 18px; border-top: 1px solid var(--rule);
}
.lede { color: var(--graphite); max-width: 70ch; margin: 10px 0 0; }

/* Cadres : réservés aux zones de saisie, pas à chaque bloc de contenu */
.panel { background: var(--surface); border: 1px solid var(--rule); border-radius: var(--radius); padding: 18px 20px; }

/* Dark mode : ajustement des bordures et ombres */
[data-theme="dark"] .panel,
.dark .panel {
  border-color: var(--field-line);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

/* Champs et boutons : cibles de 44 px */
.field {
  font: inherit; font-size: 0.95rem; color: var(--ink);
  background: var(--surface); border: 1px solid var(--field-line); border-radius: 8px;
  padding: 9px 12px; min-height: 44px;
}
.field:focus { outline: 2px solid var(--signal-ink); outline-offset: 1px; border-color: var(--ink); }

/* Dark mode : champs avec bordure plus claire */
[data-theme="dark"] .field,
.dark .field {
  border-color: var(--rule);
}
[data-theme="dark"] .field:focus,
.dark .field:focus {
  border-color: var(--signal);
}
textarea.field { width: 100%; line-height: 1.45; }
label { font-size: 0.9rem; color: var(--graphite); font-weight: 500; }
label > .field, label > select, label > input { margin-top: 4px; }

.btn {
  font: inherit; font-weight: 600; font-size: 0.95rem;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 44px; padding: 0 20px;
  color: #fff; background: var(--ink); border: 0; border-radius: 8px; cursor: pointer;
  transition: background-color 120ms ease, transform 80ms ease;
}
.btn:hover { background: #2a343f; }
.btn:active { transform: translateY(1px); }
.btn[disabled], .btn.htmx-request { opacity: 0.55; cursor: progress; }

/* Dark mode : bouton principal avec couleur adaptée */
[data-theme="dark"] .btn,
.dark .btn {
  background: var(--signal);
}
[data-theme="dark"] .btn:hover,
.dark .btn:hover {
  background: #fb923c;
}
.btn-danger {
  font: inherit; font-size: 0.9rem; color: var(--danger); background: none; border: 0;
  padding: 10px 4px; min-height: 44px; cursor: pointer; text-decoration: underline; text-underline-offset: 3px;
}
.btn-danger:hover { color: #7a1610; }

/* Dark mode : btn-danger plus visible */
[data-theme="dark"] .btn-danger,
.dark .btn-danger {
  color: #fca5a5;
}
[data-theme="dark"] .btn-danger:hover,
.dark .btn-danger:hover {
  color: #fecaca;
}

input[type="checkbox"] { width: 18px; height: 18px; accent-color: var(--signal); }
input[type="file"] { font: inherit; font-size: 0.9rem; }

/* Messages : la couleur double toujours un texte explicite */
.note { border-radius: var(--radius); padding: 12px 16px; border-left: 4px solid; }
.note-error { background: var(--err-bg); border-color: var(--danger); color: #7a1610; }
.note-ok { background: var(--ok-bg); border-color: var(--real); color: #0d5232; }
.note-warn { background: var(--warn-bg); border-color: #c98a12; color: var(--warn-ink); }

/* Dark mode : ajuster les couleurs des notes pour le fond sombre */
[data-theme="dark"] .note-error,
.dark .note-error { background: rgba(127, 29, 29, 0.2); color: #fca5a5; }
[data-theme="dark"] .note-ok,
.dark .note-ok { background: rgba(6, 78, 59, 0.2); color: #6ee7b7; }
[data-theme="dark"] .note-warn,
.dark .note-warn { background: rgba(120, 53, 15, 0.2); color: #fde68a; }

/* Tableaux de données */
main table { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
main thead th { text-align: left; font-weight: 600; font-size: 0.85rem; color: var(--graphite); padding: 0 16px 8px 0; }
main tbody td { padding: 11px 16px 11px 0; border-top: 1px solid var(--rule); vertical-align: top; }
main tbody tr:hover td { background: #eaeeec; }

/* Dark mode : tableaux */
[data-theme="dark"] main tbody tr:hover td,
.dark main tbody tr:hover td {
  background: rgba(255, 255, 255, 0.05);
}
.table-scroll { overflow-x: auto; }

/* Mises en page récurrentes */
.series-head { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 12px 24px; }
.series-head .meta { margin: 10px 0 0; }
.row-between { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 8px 16px; }
.stack > * + * { margin-top: 12px; }
.controls { display: flex; flex-wrap: wrap; align-items: flex-end; gap: 14px 18px; }
.controls > label { display: flex; flex-direction: column; }
.controls > label.check { flex-direction: row; align-items: center; gap: 10px; min-height: 44px; max-width: 26rem; }
.instrument > * + * { margin-top: 18px; }
.w-28 { width: 7rem; }
.series-link { color: var(--ink); font-weight: 600; text-decoration: none; font-size: 1.05rem; }
.series-link:hover { color: var(--signal-ink); text-decoration: underline; text-underline-offset: 3px; }

/* Dark mode : series-link */
[data-theme="dark"] .series-link,
.dark .series-link {
  color: var(--signal);
}
[data-theme="dark"] .series-link:hover,
.dark .series-link:hover {
  color: var(--signal-ink);
}
.decision { border-left: 4px solid var(--real); }

/* Dark mode : decision border */
[data-theme="dark"] .decision,
.dark .decision {
  border-left-color: var(--signal);
}
.decision h2 { margin: 0; font-size: 1.15rem; font-variation-settings: "wdth" 82; }
.detail-title { font-size: clamp(1.5rem, 1.2rem + 1.2vw, 2rem); padding-top: 12px; }

/* Révélations */
details > summary { cursor: pointer; color: var(--signal-ink); font-weight: 600; padding: 10px 0; min-height: 44px; list-style-position: inside; }
details[open] > summary { margin-bottom: 8px; }

/* Calcul en cours (HTMX) */
.htmx-indicator { display: none; }
.htmx-request .htmx-indicator, .htmx-request.htmx-indicator { display: inline-flex; }
.spinner { align-items: center; gap: 8px; color: var(--graphite); font-size: 0.9rem; }
.spinner::before {
  content: ""; width: 14px; height: 14px; border-radius: 50%;
  border: 2px solid var(--rule); border-top-color: var(--signal); animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Instrument : graphique et lectures */
.chart-box { position: relative; height: 26rem; }
@media (max-width: 640px) { .chart-box { height: 18rem; } }
.readout { display: flex; flex-wrap: wrap; gap: 12px 40px; align-items: flex-end; }
.metric { display: flex; flex-direction: column; }
.metric-v {
  font-size: 2.1rem; line-height: 1; font-weight: 650; font-variation-settings: "wdth" 75;
  font-variant-numeric: tabular-nums; letter-spacing: -0.01em;
}
.metric-l { font-size: 0.85rem; color: var(--graphite); margin-top: 6px; }
.metric-better .metric-v { color: var(--real); }
.metric-worse .metric-v { color: var(--danger); }
.verdict { font-weight: 600; }
.meta { color: var(--graphite); font-size: 0.92rem; }

pre.mermaid { background: var(--surface); border: 1px solid var(--rule); border-radius: var(--radius); padding: 16px; text-align: center; }
pre.mermaid svg { max-width: min(100%, 620px) !important; height: auto; }

/* Dark mode : mermaid */
[data-theme="dark"] pre.mermaid,
.dark pre.mermaid {
  background: var(--paper);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation-duration: 0.01ms !important; }
}