:root{
  --glass-bg: rgba(255,255,255,0.14);
  --glass-bg-2: rgba(255,255,255,0.08);
  --glass-stroke: rgba(255,255,255,0.35);
  --glass-shadow: rgba(0, 0, 0, 0.25);
  --accent: #39bdf8;
  --accent-2: #7b61ff;
  --txt: #f3f6f9;
  --muted: #c6d0dd;
}
*{ box-sizing: border-box; }
html, body{ height:100%; }
body{
  margin:0; font-family:'Inter', system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  color: var(--txt);
  background:
    radial-gradient(1200px 600px at 10% 10%, rgba(123,97,255,0.22), transparent 60%),
    radial-gradient(1000px 700px at 90% 30%, rgba(57,189,248,0.22), transparent 55%),
    linear-gradient(180deg, #0b1020 0%, #0a0f1a 100%);
  overflow-x:hidden;
}
.eli-bubble{
  background: linear-gradient(135deg, var(--glass-bg), var(--glass-bg-2));
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  border: 1px solid var(--glass-stroke);
  box-shadow: 0 10px 30px var(--glass-shadow), inset 0 1px 0 rgba(255,255,255,0.2);
  border-radius: 24px;
  padding: 18px;
}
.eli-center{
  min-height: 100vh; display: grid; place-items: center;
  padding: 120px 24px 32px 24px;
}
.demo-center{ max-width: 880px; width:100%; }
.eli-topbar{
  position: fixed; top: 20px; left: 20px; right: 20px; height: 64px;
  display:flex; align-items:center; gap:12px; z-index:70;
}
.eli-topbar .eli-bubble{
  width:100%; display:flex; align-items:center; justify-content:space-between;
  padding:10px 12px; border-radius:20px;
}
.eli-tabs{ display:flex; gap:8px; align-items:center; flex-wrap:wrap; }
.eli-tab{
  appearance:none; border:1px solid transparent; padding:8px 12px; border-radius:14px; cursor:pointer;
  font-weight:700; color:var(--muted); background:transparent; transition:all .2s ease;
}
.eli-tab:hover{ color:#fff; border-color: rgba(255,255,255,0.2); }
.eli-tab.active{
  color:#fff;
  background: radial-gradient(40% 60% at 20% 30%, rgba(123,97,255,0.25), transparent),
             radial-gradient(60% 60% at 80% 50%, rgba(57,189,248,0.25), transparent);
  border-color: rgba(255,255,255,0.35);
}
.eli-btn{ appearance:none; border:1px solid rgba(255,255,255,0.25); background:rgba(255,255,255,0.06);
  color:#fff; padding:8px 12px; border-radius:12px; font-weight:700; cursor:pointer; transition:.2s; }

/* Left panel with animation */
.eli-leftpanel{
  position: fixed; top: 96px; bottom: 20px; width: 340px; overflow: hidden; z-index: 60; transition: all .6s ease-in-out;
}
body:not(.mode-chat) .eli-leftpanel{ left: 50%; transform: translateX(-50%); }
body.mode-chat .eli-leftpanel{ left:20px; transform: translateX(0); }

.eli-leftpanel .inner{ height:100%; display:grid; grid-template-rows:auto 1fr; gap:10px; }
.eli-section{ border-radius:18px; }
.eli-section h3{ margin:0 0 10px 0; font-size:14px; letter-spacing:.08em; text-transform:uppercase; color:var(--muted); }
.eli-projects, .eli-history{ padding:14px; }
.eli-projects .actions{ display:flex; gap:8px; }
.eli-input, .eli-search{ width:100%; background:rgba(255,255,255,0.06); border:1px solid rgba(255,255,255,0.22); color:#fff; padding:10px 12px; border-radius:12px; outline:none; }
.eli-list{ margin-top:10px; display:flex; flex-direction:column; gap:8px; max-height:160px; overflow:auto; padding-right:4px; }
.eli-item{ display:flex; align-items:center; justify-content:space-between; gap:10px; padding:10px 12px; border-radius:12px; cursor:pointer; background:rgba(255,255,255,0.06); border:1px solid rgba(255,255,255,0.15); }
.eli-item:hover{ border-color: rgba(255,255,255,0.35); }
.eli-item .name{ font-weight:600; }
.eli-history-list{ overflow:auto; display:flex; flex-direction:column; gap:8px; }
.eli-conv{ padding:10px 12px; border-radius:12px; background:rgba(255,255,255,0.06); border:1px solid rgba(255,255,255,0.15); cursor:pointer; }
.eli-conv:hover{ border-color: rgba(255,255,255,0.35); }
.eli-conv .title{ font-weight:700; }
.eli-conv .meta{ font-size:12px; color: var(--muted); }

/* Chat bubble (visible only in chat mode) */
.eli-chat{
  position: fixed; top: 120px; left: 50%; transform: translateX(-50%);
  width: min(880px, 92%); height: 64vh; display:flex; flex-direction:column; justify-content:space-between;
  z-index:65; opacity:0; pointer-events:none;
}
body.mode-chat .eli-chat{ opacity:1; pointer-events:all; transition: opacity .4s ease .25s; }
.eli-chat-header{ display:flex; justify-content:space-between; align-items:center; padding-bottom:10px; border-bottom:1px solid rgba(255,255,255,0.2); }
.eli-chat-title{ font-weight:800; letter-spacing:.02em; }
.eli-chat-messages{ flex:1; overflow:auto; padding:10px; display:flex; flex-direction:column; gap:10px; }
.eli-msg{ max-width:75%; padding:10px 14px; border-radius:16px; background:rgba(255,255,255,0.06); border:1px solid rgba(255,255,255,0.15); }
.eli-msg.user{ align-self:flex-end; background:rgba(57,189,248,0.15); }
.eli-msg.eli{ align-self:flex-start; background:rgba(123,97,255,0.15); }
.eli-chat-input{ display:flex; gap:8px; padding-top:10px; border-top:1px solid rgba(255,255,255,0.2); }
.eli-chat-input textarea{ flex:1; background:rgba(255,255,255,0.08); border:1px solid rgba(255,255,255,0.2); color:#fff; border-radius:12px; resize:none; height:56px; padding:10px; }
.eli-send{ min-width:120px; }

/* === AUTHENTIFICATION (Connexion / Inscription) === */

#eli-auth-overlay {
  position: fixed;
  inset: 0;
  display: none;
  place-items: center;
  background: rgba(0,0,0,0.35);
  z-index: 9999;
}

.eli-auth-modal {
  max-width: 420px;
  width: 92%;
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.eli-auth-modal h3 {
  margin: 0 0 10px 0;
  font-size: 1.4em;
  text-align: center;
  font-weight: 800;
  color: var(--txt);
}

.eli-auth-modal label {
  display: block;
  font-size: 0.9em;
  color: var(--muted);
  margin-bottom: 8px;
}

.eli-auth-modal input {
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,0.15);
  background: rgba(255,255,255,0.05);
  color: var(--txt);
  font-size: 0.95em;
  outline: none;
  margin-top: 4px;
  transition: all 0.2s ease;
}

.eli-auth-modal input:focus {
  border-color: var(--accent);
  background: rgba(255,255,255,0.1);
}

.eli-auth-modal .eli-btn {
  flex: 1;
}

#eli-auth-msg {
  text-align: center;
  color: #ffbdbd;
  font-size: 0.9em;
}

/* Animation d’apparition fluide */
@keyframes eliAuthFadeIn {
  from { opacity: 0; transform: translateY(-15px); }
  to { opacity: 1; transform: translateY(0); }
}

.eli-auth-modal {
  animation: eliAuthFadeIn .4s ease;
}