:root {
  --navy: #0f2a4f;
  --navy-2: #123963;
  --violet: #6c4fe0;
  --violet-2: #5a3fd0;
  --teal-bg-1: #f1fbfc;
  --teal-bg-2: #d3eff3;
  --text: #1f2937;
  --muted: #6b7280;
  --border: #e3e8ee;
  --card: #ffffff;
  --danger: #b91c1c;
  --ok: #047857;
  --radius: 14px;
  --shadow: 0 6px 24px rgba(15, 42, 79, 0.08);
  --font: "Segoe UI", Inter, system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;
  --mono: Consolas, "Courier New", monospace;
}

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  font-family: var(--font);
  color: var(--text);
  background: linear-gradient(120deg, var(--teal-bg-1) 0%, var(--teal-bg-2) 100%);
  font-size: 15px;
  line-height: 1.5;
}
a { color: var(--violet); }
button { font-family: inherit; font-size: inherit; cursor: pointer; }
input, textarea { font-family: inherit; font-size: inherit; }
.hidden { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

/* ---------------------------------------------------------------- layout */
.layout { display: flex; height: 100vh; }
.sidebar {
  width: 260px; min-width: 260px; background: var(--card); border-right: 1px solid var(--border);
  display: flex; flex-direction: column; padding: 14px 12px; gap: 10px;
}
.brand {
  display: flex; align-items: center; gap: 10px; padding: 8px 12px; border-radius: 999px;
  background: #f4f6fb; border: 1px solid var(--border); font-weight: 700; color: var(--navy); font-size: 14px;
}
.brand .logo {
  width: 28px; height: 28px; border-radius: 50%; background: var(--navy); display: grid; place-items: center; color: #fff;
}
.brand .logo svg { width: 16px; height: 16px; }
.sidebar-title { display: flex; align-items: center; justify-content: space-between; padding: 0 6px; }
.sidebar-title span { color: var(--violet); font-weight: 600; font-size: 15px; }
.btn-primary {
  background: var(--navy); color: #fff; border: none; border-radius: 10px; padding: 11px 14px; font-weight: 600;
  display: flex; align-items: center; justify-content: center; gap: 8px; width: 100%;
}
.btn-primary:hover { background: var(--navy-2); }
.search { position: relative; }
.search input {
  width: 100%; padding: 10px 12px 10px 36px; border: 1px solid var(--border); border-radius: 10px; background: #fff;
}
.search svg { position: absolute; left: 12px; top: 11px; width: 16px; height: 16px; color: var(--muted); }
.conv-list { flex: 1; overflow-y: auto; display: flex; flex-direction: column; gap: 2px; margin-top: 4px; }
.conv-item {
  display: flex; align-items: center; gap: 6px; padding: 8px 10px; border-radius: 8px; color: var(--text);
  text-align: left; background: none; border: none; width: 100%;
}
.conv-item:hover, .conv-item.active { background: #eef1f8; }
.conv-item .label { flex: 1; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; font-size: 14px; }
.conv-item .del { opacity: 0; color: var(--muted); background: none; border: none; padding: 2px 4px; }
.conv-item:hover .del { opacity: 1; }
.sidebar-footer { border-top: 1px solid var(--border); padding-top: 10px; font-size: 13px; color: var(--muted); display: flex; justify-content: space-between; align-items: center; }
.link-btn { background: none; border: none; color: var(--violet); padding: 0; font-weight: 600; }

.main { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.chat { flex: 1; overflow-y: auto; padding: 32px 24px 16px; }
.chat-inner { max-width: 820px; margin: 0 auto; }

/* ---------------------------------------------------------------- accueil */
.welcome { text-align: center; margin-top: 12vh; }
.welcome h1 { font-size: 22px; font-weight: 500; color: var(--text); margin: 0 0 12px; }
.welcome h1 b { color: var(--violet); font-weight: 700; }
.welcome p { color: var(--muted); max-width: 560px; margin: 0 auto 18px; }
.btn-outline {
  background: #fff; border: 1px solid var(--border); border-radius: 10px; padding: 9px 16px; color: var(--text); font-weight: 500;
}
.btn-outline:hover { border-color: var(--violet); color: var(--violet); }
.examples { margin-top: 28px; }
.examples p { color: var(--muted); margin-bottom: 10px; }
.example {
  display: block; width: 100%; max-width: 580px; margin: 8px auto; background: #fff; border: 1px solid var(--border);
  border-radius: 12px; padding: 12px 16px; text-align: left; color: var(--text);
}
.example:hover { border-color: var(--violet); }

/* ---------------------------------------------------------------- messages */
.msg { display: flex; margin: 14px 0; gap: 12px; }
.msg.user { justify-content: flex-end; }
.bubble { max-width: 85%; padding: 12px 16px; border-radius: 16px; box-shadow: var(--shadow); }
.msg.user .bubble { background: var(--navy); color: #fff; border-bottom-right-radius: 4px; }
.msg.assistant .bubble { background: #fff; border-bottom-left-radius: 4px; width: 100%; max-width: 100%; }
.bubble p { margin: 0 0 8px; }
.bubble p:last-child { margin-bottom: 0; }
.bubble table { border-collapse: collapse; margin: 8px 0; font-size: 14px; width: auto; max-width: 100%; display: block; overflow-x: auto; }
.bubble th, .bubble td { border: 1px solid var(--border); padding: 5px 10px; text-align: left; white-space: nowrap; }
.bubble th { background: #f4f6fb; }
.bubble code { font-family: var(--mono); background: #f4f6fb; padding: 1px 5px; border-radius: 4px; font-size: 13px; }
.bubble pre { background: #0f172a; color: #e2e8f0; padding: 10px 12px; border-radius: 8px; overflow-x: auto; font-size: 13px; }
.bubble ul, .bubble ol { margin: 4px 0 8px 22px; padding: 0; }
.bubble h1, .bubble h2, .bubble h3 { font-size: 16px; margin: 10px 0 6px; }
.status { color: var(--muted); font-style: italic; font-size: 14px; display: flex; align-items: center; gap: 8px; }
.spinner { width: 14px; height: 14px; border: 2px solid var(--border); border-top-color: var(--violet); border-radius: 50%; animation: spin 0.8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.error-text { color: var(--danger); }

details.sql { margin-top: 10px; border: 1px solid var(--border); border-radius: 8px; background: #fafbfd; }
details.sql summary { cursor: pointer; padding: 8px 12px; font-size: 13px; color: var(--muted); }
details.sql .sql-body { padding: 0 12px 10px; }
details.sql pre { margin: 6px 0; }
details.sql .sql-error { color: var(--danger); font-size: 13px; }
details.sql table { font-size: 13px; }

/* ---------------------------------------------------------------- saisie */
.composer { padding: 10px 24px 14px; }
.composer-inner { max-width: 820px; margin: 0 auto; }
.composer-box {
  display: flex; align-items: flex-end; gap: 10px; background: #fff; border: 1px solid var(--border);
  border-radius: 14px; padding: 8px 10px 8px 14px; box-shadow: var(--shadow);
}
.composer-box .icon { color: var(--ok); padding-bottom: 8px; }
.composer-box textarea {
  flex: 1; border: none; resize: none; outline: none; min-height: 28px; max-height: 160px; padding: 6px 0; line-height: 1.4;
}
.send { background: #eef1f8; border: none; border-radius: 10px; width: 40px; height: 40px; display: grid; place-items: center; color: var(--navy); }
.send:disabled { opacity: 0.4; cursor: default; }
.send:not(:disabled):hover { background: var(--violet); color: #fff; }
.disclaimer { text-align: center; color: var(--muted); font-size: 12px; margin-top: 6px; }

/* ---------------------------------------------------------------- modales */
.modal-backdrop { position: fixed; inset: 0; background: rgba(15, 42, 79, 0.35); display: grid; place-items: center; z-index: 50; }
.modal { background: #fff; border-radius: var(--radius); padding: 22px 24px; width: min(760px, 94vw); max-height: 88vh; overflow-y: auto; box-shadow: var(--shadow); }
.modal h2 { margin: 0 0 12px; font-size: 18px; color: var(--navy); }
.modal .close { float: right; background: none; border: none; font-size: 20px; color: var(--muted); }
.perimetre details { border: 1px solid var(--border); border-radius: 8px; margin: 8px 0; }
.perimetre summary { padding: 8px 12px; cursor: pointer; font-weight: 600; color: var(--navy); }
.perimetre .desc { padding: 0 12px 8px; color: var(--muted); font-size: 14px; }
.perimetre table { width: 100%; border-collapse: collapse; font-size: 13px; }
.perimetre td { border-top: 1px solid var(--border); padding: 5px 12px; vertical-align: top; }
.perimetre td:first-child { font-family: var(--mono); white-space: nowrap; color: var(--navy); }

/* ---------------------------------------------------------------- formulaires */
.field { margin-bottom: 14px; }
.field label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 4px; }
.field input { width: 100%; padding: 11px 12px; border: 1px solid var(--border); border-radius: 10px; }
.field input:focus { outline: 2px solid #cfc4f7; border-color: var(--violet); }
.form-error { color: var(--danger); font-size: 14px; min-height: 20px; margin: 6px 0; }
.form-ok { color: var(--ok); font-size: 14px; }

/* ---------------------------------------------------------------- connexion */
.login-page { min-height: 100vh; display: grid; place-items: center; padding: 20px; }
.login-card { background: #fff; border-radius: 18px; padding: 30px 32px; width: min(440px, 94vw); box-shadow: var(--shadow); }
.login-card .brand { justify-content: center; margin-bottom: 18px; }
.login-card h1 { font-size: 20px; margin: 0 0 6px; color: var(--navy); text-align: center; }
.login-card .sub { color: var(--muted); text-align: center; margin: 0 0 20px; font-size: 14px; }
.qr { display: block; margin: 10px auto; width: 200px; height: 200px; }
.secret { font-family: var(--mono); background: #f4f6fb; padding: 8px 10px; border-radius: 8px; text-align: center; word-break: break-all; font-size: 13px; }
.code-input { letter-spacing: 8px; text-align: center; font-size: 22px; font-family: var(--mono); }

@media (max-width: 800px) {
  .sidebar { display: none; }
  .chat { padding: 16px 12px; }
  .welcome { margin-top: 6vh; }
}