/* ════════════════════════════════════════════════════
     CONFIGURATION THÈMES — MODIFIER ICI UNIQUEMENT
     ════════════════════════════════════════════════════ */
  :root {
    /* ── Couleurs fixes (identiques dans les deux thèmes) ── */
    --orange:       #E8610A;
    --orange-dim:   rgba(232,97,10,0.15);
    --purple:       #A855F7;
    --green:        #22C55E;
    --red:          #EF4444;
    --blue:         #3B57B8;   /* bleu signature Triaxsys */

    /* ── Taille logo ── */
    --logo-height:  48px;

    /* ── Grille de fond ── */
    --grid-size:    48px;      /* taille des cases */

    /* ══ THÈME DARK ══ */
    --dk-header:    #090C16;   /* bandeau logo */
    --dk-bg:        #0D1020;   /* fond général */
    --dk-card:      #121828;   /* cards */
    --dk-input:     #1A2232;   /* inputs */
    --dk-dark4:     #202A3C;   /* hover inputs */
    --dk-border:    rgba(100,130,220,0.09);
    --dk-text:      #E8EAF0;   /* texte principal */
    --dk-text-dim:  #6B7A9A;   /* texte secondaire */
    --dk-grid:      rgba(100,140,255,0.055); /* couleur grille */

    /* ══ THÈME LIGHT ══ */
    --lt-header:    #0F1A3A;   /* bandeau logo — bleu marine carte de visite */
    --lt-bg:        #EEF1FA;   /* fond général — blanc cassé bleuté */
    --lt-card:      #FFFFFF;   /* cards */
    --lt-input:     #F0F3FC;   /* inputs */
    --lt-dark4:     #E4E9F7;   /* hover inputs */
    --lt-border:    rgba(10,30,100,0.1);
    --lt-text:      #0D1020;   /* texte principal */
    --lt-text-dim:  #5A6580;   /* texte secondaire */
    --lt-grid:      rgba(10,40,140,0.04); /* couleur grille */
  }

  /* ── Application du thème dark (défaut) ── */
  :root, [data-theme="dark"] {
    --header-bg:  var(--dk-header);
    --dark:       var(--dk-bg);
    --dark2:      var(--dk-card);
    --dark3:      var(--dk-input);
    --dark4:      var(--dk-dark4);
    --border:     var(--dk-border);
    --text:       var(--dk-text);
    --text-dim:   var(--dk-text-dim);
    --grid-color: var(--dk-grid);
    --header-text: #E8EAF0;
  }

  /* ── Application du thème light ── */
  [data-theme="light"] {
    --header-bg:  var(--lt-header);
    --dark:       var(--lt-bg);
    --dark2:      var(--lt-card);
    --dark3:      var(--lt-input);
    --dark4:      var(--lt-dark4);
    --border:     var(--lt-border);
    --text:       var(--lt-text);
    --text-dim:   var(--lt-text-dim);
    --grid-color: var(--lt-grid);
    --header-text: #E8EAF0;  /* header toujours sombre → texte blanc */
  }

  /* ── Transition douce entre thèmes ── */
  *, *::before, *::after {
    transition: background-color 0.25s ease, border-color 0.25s ease, color 0.25s ease;
  }
  /* Exclure les animations existantes de la transition */
  .btn-convert::after, .status-dot, .spinner { transition: none !important; }
  * { margin: 0; padding: 0; box-sizing: border-box; }
  body { background: var(--dark); color: var(--text); font-family: 'Barlow', sans-serif; font-weight: 300; min-height: 100vh; overflow-x: hidden; }
  body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image:
      linear-gradient(var(--grid-color) 1px, transparent 1px),
      linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
    background-size: var(--grid-size) var(--grid-size);
    pointer-events: none;
    z-index: 0;
  }
  header {
    position: relative;
    z-index: 10;
    padding: 16px 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    background: var(--header-bg);
  }
  .header-logo { height: var(--logo-height); width: auto; flex-shrink: 0; }
  .header-tag {
    margin-left: auto;
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 11px; font-weight: 600;
    letter-spacing: 0.15em; text-transform: uppercase;
    color: var(--orange); border: 1px solid var(--orange);
    padding: 4px 10px; border-radius: 2px;
    white-space: normal; /* permet le retour à la ligne sur mobile */
    text-align: center;
    max-width: 120px;
    line-height: 1.3;
  }
  @media (max-width: 480px) {
    header { padding: 16px 12px; gap: 8px; }
    .header-tag { font-size: 9px; padding: 3px 7px; max-width: 90px; }
    .btn-theme { width: 28px; height: 28px; }
  }

  /* Bouton switch thème */
  .btn-theme {
    background: transparent;
    border: 1px solid rgba(255,255,255,0.15);
    color: rgba(255,255,255,0.7);
    width: 34px;
    height: 34px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: border-color 0.2s, background 0.2s !important;
    flex-shrink: 0;
    margin-left: 8px;
  }
  .btn-theme:hover { border-color: rgba(255,255,255,0.4); background: rgba(255,255,255,0.08); }
  main { position: relative; z-index: 1; max-width: 1100px; margin: 0 auto; padding: 48px 24px 80px; }
  .page-title { font-family: 'Barlow Condensed', sans-serif; font-size: 40px; font-weight: 800; text-transform: uppercase; letter-spacing: 0.03em; line-height: 1; margin-bottom: 8px; }
  .page-title span { color: var(--orange); }
  .page-subtitle { color: var(--text-dim); font-size: 14px; letter-spacing: 0.05em; margin-bottom: 40px; text-transform: uppercase; font-family: 'Barlow Condensed', sans-serif; font-weight: 400; }
  .card { background: var(--dark2); border: 1px solid var(--border); border-radius: 4px; padding: 32px; margin-bottom: 24px; }
  .card-title { font-family: 'Barlow Condensed', sans-serif; font-size: 13px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.15em; color: var(--orange); margin-bottom: 24px; display: flex; align-items: center; gap: 8px; }
  .card-title::before { content: ''; display: inline-block; width: 16px; height: 2px; background: var(--orange); }
  .form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-bottom: 24px; }
  @media (max-width: 600px) { .form-grid { grid-template-columns: 1fr; } }
  .field label { display: block; font-family: 'Barlow Condensed', sans-serif; font-size: 11px; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-dim); margin-bottom: 8px; }
  .field select, .field input { width: 100%; background: var(--dark3); border: 1px solid var(--border); border-radius: 3px; color: var(--text); font-family: 'Barlow', sans-serif; font-size: 14px; padding: 12px 16px; outline: none; transition: border-color 0.2s; appearance: none; }
  .field select:focus, .field input:focus { border-color: var(--orange); background: var(--dark4); }
  .field select { cursor: pointer; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23E8610A' d='M6 8L1 3h10z'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; padding-right: 36px; }
  .coords-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }

  /* Bouton détecter sous les coordonnées */
  .detect-row { display: flex; gap: 12px; margin-bottom: 8px; }
  .btn-detect {
    flex: 1;
    background: transparent;
    border: 1px solid var(--purple);
    color: var(--purple);
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    padding: 11px 16px;
    border-radius: 3px;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
  }
  .btn-detect:hover { background: rgba(168,85,247,0.1); }
  .btn-detect:disabled { opacity: 0.4; cursor: not-allowed; }
  .btn-detect .spinner { display: none; width: 13px; height: 13px; border: 2px solid rgba(168,85,247,0.3); border-top-color: var(--purple); border-radius: 50%; animation: spin 0.6s linear infinite; }
  .btn-detect.loading .detect-text { display: none; }
  .btn-detect.loading .spinner { display: block; }

  /* Lien Ma position */
  .geolocate-row { text-align: center; margin-top: 0; margin-bottom: 16px; }
  #btnGeolocate {
    background: transparent;
    border: none;
    color: var(--text-dim);
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    cursor: pointer;
    padding: 4px 8px;
    transition: color 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 5px;
  }
  #btnGeolocate:hover { color: var(--orange); }
  #btnGeolocate:disabled { opacity: 0.4; cursor: not-allowed; }
  #btnGeolocate .geo-spinner { display: none; width: 10px; height: 10px; border: 2px solid rgba(100,130,220,0.3); border-top-color: var(--text-dim); border-radius: 50%; animation: spin 0.6s linear infinite; }
  #btnGeolocate.loading .geo-text { display: none; }
  #btnGeolocate.loading .geo-spinner { display: block; }

  /* Panneau résultats détection */
  .detect-results { display: none; margin-top: 0; margin-bottom: 24px; }
  .detect-results.visible { display: block; }
  .detect-title {
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--purple);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
  }
  .detect-title::before { content: ''; display: inline-block; width: 16px; height: 2px; background: var(--purple); }
  /* Layout détection : carte + liste côte à côte */
  .detect-body {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 16px;
    align-items: start;
  }
  @media (max-width: 680px) { .detect-body { grid-template-columns: 1fr; } }

  /* Mini-carte */
  #detectMap {
    height: 220px;
    border-radius: 3px;
    border: 1px solid var(--border);
    flex-shrink: 0;
  }

  .detect-list { display: flex; flex-direction: column; gap: 8px; }
  .detect-item {
    background: var(--dark3);
    border: 1px solid var(--border);
    border-radius: 3px;
    padding: 10px 14px;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: background 0.15s, border-color 0.15s;
    cursor: pointer;
  }
  .detect-item:hover { background: var(--dark4); }
  .detect-item.highlighted { border-color: currentColor; background: var(--dark4); }

  /* Badge lettre coloré */
  .detect-badge {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 13px;
    font-weight: 800;
    color: white;
    flex-shrink: 0;
  }

  .detect-item-info { flex: 1; min-width: 0; }
  .detect-item-label {
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.05em;
    margin-bottom: 2px;
  }
  .detect-item-wgs {
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    color: var(--text-dim);
  }
  .detect-item-epsg {
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 10px;
    color: var(--text-dim);
    letter-spacing: 0.05em;
  }
  .btn-select-system {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-dim);
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 5px 10px;
    border-radius: 3px;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
    flex-shrink: 0;
  }
  .btn-select-system:hover { border-color: var(--purple); color: var(--purple); }
  .detect-none {
    font-family: 'Barlow', sans-serif;
    font-size: 13px;
    color: var(--text-dim);
    padding: 12px 0;
    font-style: italic;
  }

  .swap-wrap { display: flex; justify-content: center; margin: -8px 0 16px; }
  .btn-swap { background: var(--dark3); border: 1px solid var(--border); color: var(--orange); width: 40px; height: 40px; border-radius: 50%; cursor: pointer; font-size: 18px; display: flex; align-items: center; justify-content: center; transition: transform 0.3s, background 0.2s, border-color 0.2s; transform: rotate(90deg); }
  .btn-swap:hover { background: var(--orange-dim); border-color: var(--orange); transform: rotate(270deg); }
  .btn-convert { width: 100%; background: var(--orange); border: none; color: white; font-family: 'Barlow Condensed', sans-serif; font-size: 15px; font-weight: 700; letter-spacing: 0.15em; text-transform: uppercase; padding: 16px; border-radius: 3px; cursor: pointer; transition: all 0.2s; }
  .btn-convert:hover { background: #d4560a; }
  .btn-convert:active { transform: scale(0.99); }
  .btn-convert:disabled { opacity: 0.5; cursor: not-allowed; }
  .btn-convert .spinner { display: none; width: 16px; height: 16px; border: 2px solid rgba(255,255,255,0.3); border-top-color: white; border-radius: 50%; animation: spin 0.6s linear infinite; margin: 0 auto; }
  .btn-convert.loading .btn-text { display: none; }
  .btn-convert.loading .spinner { display: block; }
  @keyframes spin { to { transform: rotate(360deg); } }

  .results { display: none; }
  .results.visible { display: block; }
  .result-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
  .result-badge { font-family: 'Barlow Condensed', sans-serif; font-size: 11px; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; padding: 4px 10px; border-radius: 2px; }
  .result-badge.success { background: rgba(34,197,94,0.1); color: var(--green); border: 1px solid rgba(34,197,94,0.3); }
  .result-address { background: var(--dark3); border: 1px solid var(--border); border-left: 3px solid var(--blue); border-radius: 3px; padding: 12px 16px; margin-bottom: 16px; display: flex; align-items: center; gap: 10px; min-height: 44px; }
  .result-address-icon { color: var(--blue); font-size: 15px; flex-shrink: 0; }
  .result-address-text { font-family: 'Barlow', sans-serif; font-size: 13px; color: var(--text); line-height: 1.4; flex: 1; }
  .result-address-text.loading { color: var(--text-dim); font-style: italic; }
  .btn-copy-addr { background: transparent; border: 1px solid var(--border); color: var(--text-dim); font-size: 12px; padding: 3px 8px; border-radius: 3px; cursor: pointer; display: flex; align-items: center; gap: 4px; justify-content: center; transition: all 0.2s; flex-shrink: 0; font-family: 'Barlow Condensed', sans-serif; letter-spacing: 0.05em; }
  .btn-copy-addr:hover { border-color: var(--blue); color: var(--blue); background: rgba(59,87,184,0.1); }
  .btn-copy-addr.copied { border-color: var(--green); color: var(--green); }
  .btn-copy-addr.hidden { visibility: hidden; }
  .result-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; }
  .result-item { background: var(--dark3); border: 1px solid var(--border); border-radius: 3px; padding: 16px; position: relative; overflow: hidden; }
  .result-item::before { content: ''; position: absolute; top: 0; left: 0; width: 3px; height: 100%; background: var(--orange); }
  .result-label { font-family: 'Barlow Condensed', sans-serif; font-size: 10px; font-weight: 600; letter-spacing: 0.15em; text-transform: uppercase; color: var(--text-dim); margin-bottom: 6px; }
  .result-value { font-family: 'JetBrains Mono', monospace; font-size: 18px; font-weight: 500; color: var(--text); word-break: break-all; }
  .result-unit { font-size: 11px; color: var(--text-dim); margin-top: 4px; font-family: 'Barlow', sans-serif; }
  .result-copy { position: absolute; top: 10px; right: 10px; background: transparent; border: 1px solid var(--border); color: var(--text-dim); font-size: 13px; width: 26px; height: 26px; border-radius: 3px; cursor: pointer; display: flex; align-items: center; justify-content: center; transition: all 0.2s; }
  .result-copy:hover { border-color: var(--orange); color: var(--orange); background: var(--orange-dim); }
  .result-copy.copied { border-color: var(--green); color: var(--green); }
  .all-results { display: none; }
  .all-results.visible { display: block; }
  .results-table { width: 100%; border-collapse: collapse; font-size: 13px; }
  .results-table th { font-family: 'Barlow Condensed', sans-serif; font-size: 10px; font-weight: 600; letter-spacing: 0.15em; text-transform: uppercase; color: var(--text-dim); text-align: left; padding: 10px 16px; border-bottom: 1px solid var(--border); }
  .results-table td { padding: 12px 16px; border-bottom: 1px solid var(--border); font-family: 'JetBrains Mono', monospace; font-size: 12px; }
  .results-table tr:last-child td { border-bottom: none; }
  .results-table tr:hover td { background: var(--dark3); }
  .sys-label { font-family: 'Barlow', sans-serif; font-size: 13px; color: var(--text-dim); }
  .btn-copy-row { background: transparent; border: 1px solid var(--border); color: var(--text-dim); font-size: 12px; padding: 3px 8px; border-radius: 3px; cursor: pointer; font-family: 'Barlow Condensed', sans-serif; letter-spacing: 0.05em; transition: all 0.2s; white-space: nowrap; }
  .btn-copy-row:hover { border-color: var(--orange); color: var(--orange); background: var(--orange-dim); }
  .btn-copy-row.copied { border-color: var(--green); color: var(--green); }
  .map-card { padding: 0; overflow: hidden; }
  .map-card .card-title { padding: 20px 32px 0; margin-bottom: 0; }
  .map-hint { padding: 8px 32px 12px; font-family: 'Barlow Condensed', sans-serif; font-size: 11px; letter-spacing: 0.08em; color: var(--text-dim); text-transform: uppercase; }
  #map { height: 420px; width: 100%; }
  .map-links { display: flex; gap: 12px; padding: 12px 32px 20px; flex-wrap: wrap; }
  .btn-map-link { display: inline-flex; align-items: center; gap: 6px; font-family: 'Barlow Condensed', sans-serif; font-size: 12px; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; padding: 8px 14px; border-radius: 3px; text-decoration: none; border: 1px solid var(--border); color: var(--text-dim); transition: all 0.2s; }
  .btn-map-link:hover { border-color: var(--orange); color: var(--orange); background: var(--orange-dim); }
  .leaflet-container { background: var(--dark3) !important; }
  .leaflet-control-layers { background: var(--dark2) !important; border: 1px solid var(--border) !important; color: var(--text) !important; border-radius: 3px !important; box-shadow: 0 4px 16px rgba(0,0,0,0.2) !important; }
  .leaflet-control-layers-base label { color: var(--text) !important; }
  .leaflet-control-zoom a { background: var(--dark2) !important; border-color: var(--border) !important; color: var(--orange) !important; }
  .leaflet-control-zoom a:hover { background: var(--dark3) !important; }
  .leaflet-control-attribution { background: rgba(13,15,18,0.7) !important; color: var(--text-dim) !important; font-size: 10px !important; }
  .leaflet-control-attribution a { color: var(--orange) !important; }
  .leaflet-popup-content-wrapper { background: var(--dark2) !important; border: 1px solid var(--border) !important; border-radius: 3px !important; color: var(--text) !important; box-shadow: 0 4px 24px rgba(0,0,0,0.3) !important; }
  .leaflet-popup-tip { background: var(--dark2) !important; }
  .leaflet-popup-content { font-family: 'JetBrains Mono', monospace !important; font-size: 12px !important; line-height: 1.9 !important; margin: 12px 16px !important; min-width: 160px; }
  .popup-title { font-family: 'Barlow Condensed', sans-serif !important; font-size: 11px !important; font-weight: 600 !important; letter-spacing: 0.12em !important; text-transform: uppercase !important; color: var(--orange) !important; margin-bottom: 6px !important; display: block; }
  .status-bar { position: fixed; bottom: 0; left: 0; right: 0; background: var(--dark2); border-top: 1px solid var(--border); padding: 8px 24px; display: flex; align-items: center; gap: 12px; font-family: 'Barlow Condensed', sans-serif; font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-dim); z-index: 1000; overflow: hidden; }
  .status-bar-info { display: flex; align-items: center; gap: 12px; flex: 1; min-width: 0; }
  .status-bar-info span { white-space: nowrap; }
  @media (max-width: 640px) {
    .status-bar { padding: 8px 12px; gap: 8px; font-size: 10px; }
    .status-bar-info span:nth-child(2),
    .status-bar-info span:nth-child(3) { display: none; }
  }
  .status-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--green); animation: pulse 2s ease-in-out infinite; }
  @keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.3; } }
  .error-msg { background: rgba(239,68,68,0.1); border: 1px solid rgba(239,68,68,0.3); border-radius: 3px; padding: 12px 16px; color: var(--red); font-size: 13px; margin-top: 16px; display: none; }
  .error-msg.visible { display: block; }

  /* Avertissement résultat hors France */
  .warn-hors-france {
    background: rgba(234,179,8,0.1);
    border: 1px solid rgba(234,179,8,0.35);
    border-left: 3px solid #EAB308;
    border-radius: 3px;
    padding: 10px 14px;
    margin-top: 14px;
    margin-bottom: 14px;
    color: #EAB308;
    font-family: 'Barlow', sans-serif;
    font-size: 13px;
    display: none;
    align-items: center;
    gap: 8px;
  }
  /* Message inline inversion WGS84 — sous les champs coordonnées */
  .msg-swap {
    display: none;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    margin-top: -8px;
    margin-bottom: 8px;
    background: rgba(232,97,10,0.08);
    border: 1px solid rgba(232,97,10,0.3);
    border-left: 3px solid var(--orange);
    border-radius: 3px;
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--orange);
  }
  .msg-swap.visible { display: flex; animation: fadeIn 0.3s ease forwards; }
  .msg-swap.hiding { display: flex; animation: fadeOut 0.3s ease forwards; }
  @keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

  /* Fade out pour disparition */
  .fade-out { animation: fadeOut 0.25s ease forwards; }
  @keyframes fadeOut { from { opacity: 1; } to { opacity: 0; } }

  /* Transition apparition panneau détection */
  .detect-results.visible { display: block; animation: fadeIn 0.3s ease forwards; }

  /* Transition apparition mini-carte aperçu */
  .detect-apercu-map { animation: fadeIn 0.25s ease forwards; }

  /* Transition items détection */
  .detect-item { transition: background 0.2s ease, border-color 0.2s ease, opacity 0.25s ease; }

  /* Flash confirmation sur item sélectionné */
  @keyframes confirmFlash {
    0%   { background: var(--dark3); }
    40%  { background: rgba(232,97,10,0.15); }
    100% { background: var(--dark3); }
  }
  .detect-item.confirming { animation: confirmFlash 0.4s ease forwards; }

  /* Adresse : fade in du texte */
  .addr-fade { animation: fadeIn 0.3s ease forwards; }

  /* Avertissement hors France */
  .warn-hors-france { transition: opacity 0.3s ease; }
  .warn-hors-france.visible { display: flex; animation: fadeIn 0.3s ease forwards; }

  /* Carte principale */
  #mapCard.visible-card { animation: fadeIn 0.35s ease forwards; }

  /* Résultats conversion */
  .results.visible { display: block; animation: fadeIn 0.3s ease forwards; }
  .all-results.visible { display: block; animation: fadeIn 0.3s ease forwards; }

  /* Flash subtil orange quand un champ change automatiquement (ex: clic sur la carte) */
  @keyframes trxFlashUpdate {
    0%   { background-color: rgba(232, 97, 10, 0.18); border-color: rgba(232, 97, 10, 0.55); }
    100% { background-color: var(--dark3); border-color: var(--border); }
  }
  .field-flash { animation: trxFlashUpdate 0.6s ease-out; }
  .toggle-all { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; cursor: pointer; user-select: none; }
  .toggle-all input { display: none; }
  .toggle-track { width: 36px; height: 20px; background: var(--dark4); border: 1px solid var(--border); border-radius: 10px; position: relative; transition: background 0.2s; flex-shrink: 0; }
  .toggle-all input:checked + .toggle-track { background: var(--orange); border-color: var(--orange); }
  .toggle-track::after { content: ''; position: absolute; top: 2px; left: 2px; width: 14px; height: 14px; background: white; border-radius: 50%; transition: left 0.2s; }
  .toggle-all input:checked + .toggle-track::after { left: 18px; }
  .toggle-label { font-family: 'Barlow Condensed', sans-serif; font-size: 12px; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-dim); }

  /* Supprimer les flèches des inputs number */
  input[type=number]::-webkit-inner-spin-button,
  input[type=number]::-webkit-outer-spin-button { -webkit-appearance: none; margin: 0; }
  input[type=number] { -moz-appearance: textfield; }

  /* Animation sweep bouton Convertir */
  .btn-convert { position: relative; overflow: hidden; }
  .btn-convert::after {
    content: '';
    position: absolute;
    top: 0; left: -100%;
    width: 60%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.18), transparent);
    transform: skewX(-20deg);
    transition: none;
  }
  .btn-convert:not(:disabled):hover::after {
    left: 150%;
    transition: left 0.55s ease;
  }

  /* ── Configuration logo ── */
  .header-logo { height: var(--logo-height); width: auto; flex-shrink: 0; }
  .detect-item { cursor: pointer; }
  .detect-item:hover { background: var(--dark4); border-color: var(--purple); }

  /* Badge recommandé */
  /* Badge CC optimal */
  .badge-recommended {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--orange);
    border: 1px solid var(--orange);
    background: rgba(232,97,10,0.08);
    padding: 2px 7px;
    border-radius: 2px;
    margin-left: 8px;
    vertical-align: middle;
    white-space: nowrap;
    cursor: help;
    position: relative;
  }

  /* Tooltip du badge */
  .badge-recommended::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: calc(100% + 6px);
    left: 50%;
    transform: translateX(-50%);
    background: var(--dark2);
    border: 1px solid var(--border);
    border-left: 2px solid var(--orange);
    color: var(--text);
    font-family: 'Barlow', sans-serif;
    font-size: 11px;
    font-weight: 400;
    letter-spacing: 0;
    text-transform: none;
    padding: 6px 10px;
    border-radius: 3px;
    white-space: nowrap;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.2s ease;
    z-index: 100;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
  }
  .badge-recommended:hover::after { opacity: 1; }
  /* Source + cible avec swap centré entre les deux */
  .systems-row {
    display: grid;
    grid-template-columns: 1fr 40px 1fr;
    gap: 8px;
    margin-bottom: 8px;
    align-items: end;
  }
  .systems-row .swap-center {
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding-bottom: 12px;
  }
  /* Mobile : source / flèche / cible en colonne */
  @media (max-width: 560px) {
    .systems-row {
      grid-template-columns: 1fr;
      grid-template-rows: auto auto auto;
    }
    .systems-row > .field:first-child { grid-row: 1; }
    .systems-row .swap-center {
      grid-row: 2;
      padding-bottom: 0;
      padding-top: 4px;
      padding-bottom: 4px;
      align-items: center;
    }
    /* Forcer le rond parfait sur mobile */
    .systems-row .swap-center .btn-swap {
      width: 36px !important;
      height: 36px !important;
      min-width: 36px;
      min-height: 36px;
      border-radius: 50% !important;
    }
    .systems-row > .field:last-child { grid-row: 3; }
  }

/* ── Ligne source dans les résultats ── */
.result-source {
  background: var(--dark3);
  border: 1px solid var(--border);
  border-left: 3px solid var(--orange);
  border-radius: 3px;
  padding: 8px 16px;
  margin-bottom: 12px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--text-dim);
  display: flex;
  align-items: center;
  gap: 0;
  flex-wrap: wrap;
  min-height: 36px;
}

/* ── Bouton thème : icône SVG centrée ── */
.btn-theme { display: flex; align-items: center; justify-content: center; }
.btn-theme svg { display: block; }

/* ── Quota status bar ── */
.quota-bar-info { display: flex; align-items: center; gap: 8px; margin-left: auto; }
.quota-bar-track { width: 80px; height: 4px; background: var(--dark4); border-radius: 2px; overflow: hidden; }
.quota-bar-fill { height: 100%; background: var(--orange); border-radius: 2px; transition: width 0.4s ease; }
.quota-bar-link { color: var(--orange); text-decoration: none; font-size: 10px; letter-spacing: 0.1em; border: 1px solid var(--orange); padding: 2px 6px; border-radius: 2px; transition: all 0.2s; }
.quota-bar-link:hover { background: var(--orange); color: white; }

/* ── Banneau quota dépassé ── */
.quota-exceeded-banner {
  display: none;
  background: rgba(168,85,247,0.08);
  border: 1px solid rgba(168,85,247,0.3);
  border-left: 3px solid var(--purple);
  border-radius: 3px;
  padding: 16px 20px;
  margin-top: 16px;
  gap: 16px;
  align-items: flex-start;
}
.quota-exceeded-banner.visible { display: flex; animation: fadeIn 0.3s ease forwards; }
.quota-exceeded-icon { font-size: 20px; flex-shrink: 0; }
.quota-exceeded-text { flex: 1; }
.quota-exceeded-title { font-family: 'Barlow Condensed', sans-serif; font-size: 14px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--purple); margin-bottom: 4px; }
.quota-exceeded-msg { font-family: 'Barlow', sans-serif; font-size: 13px; color: var(--text-dim); line-height: 1.5; }
.quota-exceeded-actions { display: flex; gap: 8px; margin-top: 12px; flex-wrap: wrap; }
.btn-quota-action { font-family: 'Barlow Condensed', sans-serif; font-size: 12px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; padding: 8px 16px; border-radius: 3px; cursor: pointer; text-decoration: none; transition: all 0.2s; border: none; }
.btn-quota-free { background: var(--dark3); color: var(--text); border: 1px solid var(--border); }
.btn-quota-free:hover { border-color: var(--purple); color: var(--purple); }
.btn-quota-pro { background: var(--purple); color: white; }
.btn-quota-pro:hover { background: #9333ea; }

/* ── Ligne source dans les résultats ── */
.result-source {
  background: var(--dark3);
  border: 1px solid var(--border);
  border-left: 3px solid var(--orange);
  border-radius: 3px;
  padding: 8px 16px;
  margin-bottom: 12px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  min-height: 36px;
}
.result-source:empty { display: none; }
.src-label { font-family: 'Barlow Condensed', sans-serif; font-size: 10px; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-dim); margin-right: 4px; }
.src-sys { font-family: 'Barlow Condensed', sans-serif; font-size: 13px; font-weight: 600; color: var(--orange); letter-spacing: 0.05em; }
.src-epsg { color: var(--text-dim); font-size: 10px; }
.src-coord { color: var(--text); }

/* ── Badge converti ── */
.result-badge-wrap { display: flex; justify-content: flex-end; margin-bottom: 8px; }

/* ── Bouton thème SVG centré ── */
.btn-theme { display: flex; align-items: center; justify-content: center; }
.btn-theme svg { display: block; }

/* ── Tableau responsive mobile — sans overflow horizontal ── */
@media (max-width: 640px) {
  .all-results, .results { overflow: hidden; }
  .results-table { table-layout: fixed; width: 100%; }
  .results-table thead { display: none; }
  .results-table tbody, .results-table tr { display: block; width: 100%; box-sizing: border-box; }
  .results-table tr {
    border: 1px solid var(--border);
    border-radius: 3px;
    margin-bottom: 8px;
    padding: 8px 12px;
  }
  .results-table td {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 4px 0;
    border: none;
    font-size: 12px;
    width: 100%;
    box-sizing: border-box;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .results-table td.sys-label {
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 13px;
    font-weight: 600;
    color: var(--text);
    border-bottom: 1px solid var(--border);
    padding-bottom: 6px;
    margin-bottom: 4px;
    white-space: normal;
    word-break: break-word;
  }
  .results-table td.col-epsg::before { content: 'EPSG · '; color: var(--text-dim); }
  .results-table td.col-x::before { content: 'X · '; color: var(--text-dim); }
  .results-table td.col-y::before { content: 'Y · '; color: var(--text-dim); }
  .results-table td:last-child { justify-content: flex-end; margin-top: 4px; }
}

/* ── Quota ── */
.quota-bar-info { display: flex; align-items: center; gap: 8px; margin-left: auto; }
.quota-bar-track { width: 80px; height: 4px; background: var(--dark4); border-radius: 2px; overflow: hidden; }
.quota-bar-fill { height: 100%; background: var(--orange); border-radius: 2px; transition: width 0.4s ease; }
.quota-bar-link { color: var(--orange); text-decoration: none; font-size: 10px; letter-spacing: 0.1em; border: 1px solid var(--orange); padding: 2px 6px; border-radius: 2px; transition: all 0.2s; }
.quota-bar-link:hover { background: var(--orange); color: white; }

/* ── Bandeau quota dépassé ── */
.quota-exceeded-banner { display: none; background: rgba(168,85,247,0.08); border: 1px solid rgba(168,85,247,0.3); border-left: 3px solid var(--purple); border-radius: 3px; padding: 16px 20px; margin-top: 16px; gap: 16px; align-items: flex-start; }
.quota-exceeded-banner.visible { display: flex; animation: fadeIn 0.3s ease forwards; }
.quota-exceeded-icon { font-size: 20px; flex-shrink: 0; }
.quota-exceeded-text { flex: 1; }
.quota-exceeded-title { font-family: 'Barlow Condensed', sans-serif; font-size: 14px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--purple); margin-bottom: 4px; }
.quota-exceeded-msg { font-family: 'Barlow', sans-serif; font-size: 13px; color: var(--text-dim); line-height: 1.5; }
.quota-exceeded-actions { display: flex; gap: 8px; margin-top: 12px; flex-wrap: wrap; }
.btn-quota-action { font-family: 'Barlow Condensed', sans-serif; font-size: 12px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; padding: 8px 16px; border-radius: 3px; cursor: pointer; text-decoration: none; transition: all 0.2s; border: none; }
.btn-quota-free { background: var(--dark3); color: var(--text); border: 1px solid var(--border); }
.btn-quota-free:hover { border-color: var(--purple); color: var(--purple); }
.btn-quota-pro { background: var(--purple); color: white; }
.btn-quota-pro:hover { background: #9333ea; }

/* ── Indicateur précision ── */
.precision-note {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 10px;
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--text-dim);
}
.precision-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  min-width: 16px;
  border: 1px solid var(--text-dim);
  border-radius: 50%;
  font-size: 10px;
  flex-shrink: 0;
}

/* ══════════════════════════════════════════════════════
   AUTH HEADER — Bouton connexion / menu utilisateur
   ══════════════════════════════════════════════════════ */

.header-auth { display: flex; align-items: center; margin-left: 8px; flex-shrink: 0; }

/* Bouton Se connecter */
.btn-header-login {
  display: flex; align-items: center; gap: 6px;
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 12px; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase;
  color: rgba(255,255,255,0.75);
  border: 1px solid rgba(255,255,255,0.2);
  padding: 6px 12px; border-radius: 3px;
  text-decoration: none; transition: all 0.2s;
  white-space: nowrap;
}
.btn-header-login:hover { border-color: var(--orange); color: var(--orange); }
@media (max-width: 480px) {
  .btn-header-login-text { display: none; }
  .btn-header-login { padding: 6px 8px; }
}

/* Menu utilisateur connecté */
.header-user {
  display: flex; align-items: center; gap: 6px;
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 12px; font-weight: 600; letter-spacing: 0.08em;
  color: rgba(255,255,255,0.75);
  border: 1px solid rgba(255,255,255,0.15);
  padding: 5px 10px; border-radius: 3px;
  cursor: pointer; position: relative;
  transition: border-color 0.2s;
  white-space: nowrap;
}
.header-user:hover { border-color: rgba(255,255,255,0.35); }
.header-email { max-width: 140px; overflow: hidden; text-overflow: ellipsis; }
@media (max-width: 560px) { .header-email { max-width: 80px; } }
@media (max-width: 400px) { .header-email { display: none; } }

/* Badge tier dans le header */
.header-tier-badge {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 9px; font-weight: 800; letter-spacing: 0.15em;
  border: 1px solid; padding: 1px 5px; border-radius: 2px;
  flex-shrink: 0;
}

/* Dropdown menu */
.header-dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: var(--dark2);
  border: 1px solid var(--border);
  border-radius: 4px;
  min-width: 200px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
  z-index: 1000;
  overflow: hidden;
}
.header-dropdown.visible { display: block; animation: fadeInDown 0.15s ease; }
@keyframes fadeInDown { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: translateY(0); } }

.header-dropdown-info { padding: 12px 16px; }
.dropdown-email { font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--text); margin-bottom: 2px; word-break: break-all; }
.dropdown-tier { font-family: 'Barlow Condensed', sans-serif; font-size: 11px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; }
.header-dropdown-divider { height: 1px; background: var(--border); margin: 0; }
.dropdown-item {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 16px;
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 13px; font-weight: 600; letter-spacing: 0.05em;
  color: var(--text-dim); text-decoration: none;
  background: transparent; border: none; width: 100%; text-align: left;
  cursor: pointer; transition: all 0.15s;
}
.dropdown-item:hover { background: var(--dark3); color: var(--text); }
.dropdown-item-upgrade { color: var(--purple) !important; }
.dropdown-item-upgrade:hover { background: rgba(168,85,247,0.08) !important; }
.dropdown-item-logout:hover { background: rgba(239,68,68,0.08) !important; color: var(--red) !important; }

/* ── Liens légaux status bar ── */
.status-bar-legal { display: flex; align-items: center; gap: 12px; }
.status-bar-legal-link { color: var(--text-dim); text-decoration: none; font-size: 10px; letter-spacing: 0.08em; transition: color 0.2s; white-space: nowrap; }
.status-bar-legal-link:hover { color: var(--orange); }
@media (max-width: 800px) { .status-bar-legal { display: none; } }

/* ── Navigation principale ── */
.header-nav { display: flex; align-self: stretch; margin-left: 16px; }
.nav-item {
  display: flex; align-items: center; gap: 6px;
  font-family: 'Barlow Condensed', sans-serif; font-size: 12px; font-weight: 600;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--text-dim); text-decoration: none;
  padding: 0 14px; border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}
.nav-item:hover { color: var(--text); }
.nav-item.nav-active { color: var(--orange); border-bottom-color: var(--orange); }
.nav-label-short { display: none; }
.header-nav ~ .header-auth { margin-left: auto; }
@media (max-width: 640px) {
  .header-nav { margin-left: 8px; }
  .nav-item { padding: 0 10px; font-size: 11px; gap: 4px; }
  .nav-label { display: none; }
  .nav-label-short { display: block; }
}
@media (max-width: 380px) {
  .nav-item { padding: 0 7px; }
  .nav-label-short { display: none; }
}