:root {
  /* Fonds */
  --bg:      rgb(11, 17, 32);        
  --card:    rgb(19,29,48);     
  --card2:   rgb(33, 42, 60);        

  /* Borders */
  --border:  rgba(60, 122, 193, 0.2);
  --border2: rgba(255, 255, 255, 0.07);

  /* Accent  */
  --accent:  #284296;
  --accent2: #759de6;
  --accentL: rgba(85, 100, 184, 0.267);

  /* Textes — */
  --text:    #cbd8df;        
  --text2:   #b8bdc7;        
  --text3:   #687074;        

  /* Statuts */
  --green:   #6dce8a;
  --green2:  #4a9a72;
  --blue:    #89afc8;
  --blue2:   #6494b0;
  --red:     #d45757;
  --amber:   #ddc286;
  --orange: #ff7e14;
  --pur : #cb9de6;
  --cyan : #88dfda;
  --yellow : #f59e0b;
  --autre : #8fe953;

  --mono:   'DM Mono', monospace;
  --sans:   'DM Sans', sans-serif;
  --radius: 10px;
  --radius2: 7px;
}

/* ── Thème clair ──────────────────────────────────────── */
body.light {
  --bg:      rgb(255, 255, 255);
  --card:    rgb(230, 235, 241);
  --card2:   rgb(248, 248, 248);

  --border:  rgba(235, 241, 248, 0.15);
  --border2: rgba(255, 255, 255, 0.08);

  --accent:  #63a1b4;
  --accent2: #6395ac;
  --accentL: rgba(54, 73, 128, 0.15);

  --text:    #0c121b;
  --text2:   #25303f;
  --text3:   #333b47;

  --green:   #1a9450;
  --green2:  #127038;
  --blue:    #2666a0;
  --blue2:   #9fc4e4;
  --red:     #b83030;
  --amber:   #8a6010;
  --orange:  #c05808;
  --pur:     #7030a8;
  --cyan:    #0a8080;
  --yellow:  #906800;
  --autre:   #3a8a08;
}

body.light::before {
  background: linear-gradient(var(--bg), rgb(255, 255, 255) 0%, transparent 60%);
}

/* Transition douce au changement de thème */
.theme-transitioning,
.theme-transitioning * {
  transition: background-color 0s ease, border-color 0s ease,
              color 0s ease, box-shadow 0s ease !important;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
}
body::before {
  content: '';
  position: fixed; inset: 0;
  background:
    linear-gradient( var(--bg),rgba(91, 114, 163, 0.199) 20, transparent 60%);
  pointer-events: none; z-index: 0;
}
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(131, 159, 211, 0.3); border-radius: 99px; }

/* ─── HEADER ─── */
header {
  position: sticky; top: 0; z-index: 100;
  background: var(--bg);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border2);
  padding: 0 24px;
  height: 62px;
  display: flex; align-items: center; gap: 24px;
  box-shadow: 0px 5px 10px rgba(0, 0, 0, 0.4);
}
.logo {
  display: flex; align-items: center; gap: 10px;
  font-size: 15px; font-weight: 600; letter-spacing: -0.3px; white-space: nowrap;
}
.logo-badge {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border-radius: 8px; width: 32px; height: 32px;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px;
}
.logo-text span { color: var(--text2); font-weight: 400; }
.steps {
  display: flex; align-items: center; gap: 4px; margin-left: auto;
}
.step-pill {
  display: flex; align-items: center; gap: 7px;
  padding: 7px 10px; border-radius: 99px;
  font-size: 13px; font-weight: 500; cursor: pointer;
  border: 2px solid transparent;
  color: var(--text3); transition: all 0.25s;
}
.step-pill .step-num {
  width: 20px; height: 20px; border-radius: 50%;
  background: rgba(255, 255, 255, 0.07);
  display: flex; align-items: center; justify-content: center;
  font-size: 11px; font-family: var(--mono); font-weight: 500;
  transition: all 0.25s;
}
.step-pill.active {
  color: var(--blue);
  border-color: rgba(87, 139, 217, 0.35);
  background: rgba(87, 191, 217, 0.1);
  
}
.step-pill.active .step-num { background: var(--blue); color: #ffffff; }
.step-pill.done { color: var(--text2); }
.step-pill.done .step-num { background: rgba(94, 156, 184, 0.2); color: var(--blue); }
.step-sep { color: var(--text3); font-size: 16px; }

/* ─── GENERIC BUTTONS ─── */
.btn {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 9px 18px; border-radius: 99px;
  font-family: var(--sans); font-size: 13px; font-weight: 500;
  cursor: pointer; transition: all 0.2s; border: 0px solid var(--border2);
  background: var(--card); color: var(--text2);
}
.btn:hover { background-color: var(--card2); color: var(--text); }
.btn-blue  { background: rgba(123,167,212,0.12); border-color: rgba(123,167,212,0.3); color: var(--text); }
.btn-blue:hover  { background: rgba(123,167,212,0.2); }
.btn-green { background: rgba(94,184,138,0.1);  border-color: rgba(94,184,138,0.3);  color: var(--green); }
.btn-green:hover { background: rgba(94,184,138,0.18); }
.btn-red   { background: rgba(224,112,112,0.1);  border-color: rgba(224,112,112,0.3); color: var(--red); }
.btn-red:hover   { background: rgba(224,112,112,0.18); }

/* ─── TOAST ─── */
#toast {
  position: fixed; bottom: 28px; left: 50%; transform: translateX(-50%) translateY(80px);
  background: var(--card2); backdrop-filter: blur(12px);
  border-radius: var(--radius2); padding: 12px 20px;
  font-size: 13px; color: var(--text); z-index: 9999;
  transition: transform 0.35s cubic-bezier(0.16,1,0.3,1), opacity 0.35s;
  opacity: 0; white-space: nowrap;
}
#toast.show { transform: translateX(-50%) translateY(0); opacity: 1; }
#toast.success { border-left-color: var(--green); }
#toast.error   { border-left-color: var(--red); }

/* ─── FIGURES ─── */
.fig-wrap { display: flex; justify-content: center; margin: 3px 0; }
.fig-wrap svg { max-width: 100%; height: auto; border-radius: 6px; overflow: visible; }