:root {
  --bg: #F4F6F9; --surface: #FFFFFF; --ink: #17212B; --ink-2: #3E4C5A; --muted: #6B7A89; --rule: #D5DCE5;
  --brand: #3B7E4D; --brand-ink: #2C6139; --brand-soft: #E6F1E9; --cream: #FBF7EA;
  --accent: #1F5FBF; --bad: #B3362F; --bad-soft: #F9E3E1; --info-soft: #E3ECFA; --info: #164A96;
  --focus: #1F5FBF; --shadow: 0 1px 2px rgba(23,33,43,.06), 0 18px 40px -20px rgba(23,33,43,.28);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) {
  --bg: #0F151C; --surface: #161E27; --ink: #E7EDF3; --ink-2: #C0CBD6; --muted: #8B9AAA; --rule: #2C3946;
  --brand: #3B7E4D; --brand-ink: #7CC191; --brand-soft: #16291D; --bad: #E27A72; --bad-soft: #3F1E1C; --info-soft: #1C2C44; --info: #9DC0F8;
  --focus: #6FA3F5; --shadow: 0 1px 2px rgba(0,0,0,.4), 0 18px 40px -20px rgba(0,0,0,.7); color-scheme: dark; } }
:root[data-theme="dark"] {
  --bg: #0F151C; --surface: #161E27; --ink: #E7EDF3; --ink-2: #C0CBD6; --muted: #8B9AAA; --rule: #2C3946;
  --brand: #3B7E4D; --brand-ink: #7CC191; --brand-soft: #16291D; --bad: #E27A72; --bad-soft: #3F1E1C; --info-soft: #1C2C44; --info: #9DC0F8;
  --focus: #6FA3F5; --shadow: 0 1px 2px rgba(0,0,0,.4), 0 18px 40px -20px rgba(0,0,0,.7); color-scheme: dark; }

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body { background: var(--bg); color: var(--ink); font-family: "IBM Plex Sans", "Helvetica Neue", Arial, sans-serif; font-size: 15px; line-height: 1.5; -webkit-font-smoothing: antialiased; }
.login { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); min-height: 100vh; }

/* ---- colonne de marque ---- */
.brand-side { background: var(--brand); color: var(--cream); display: flex; align-items: center; padding-inline: clamp(24px, 6vw, 80px); padding-block: 48px; position: relative; overflow: hidden; }
.brand-side::after { content: ""; position: absolute; right: -120px; bottom: -120px; width: 360px; height: 360px; border-radius: 50%; border: 56px solid rgba(251, 247, 234, .08); }
.brand-inner { max-width: 460px; position: relative; z-index: 1; }
.brand-side .logo { display: block; width: 220px; max-width: 100%; height: auto; border-radius: 12px; box-shadow: 0 0 0 1px rgba(251,247,234,.25); }
.tagline { font-family: "IBM Plex Mono", ui-monospace, Menlo, monospace; font-size: 13px; letter-spacing: .08em; margin: 12px 0 40px; opacity: .85; }
.brand-side h2 { font-family: "Bricolage Grotesque", "IBM Plex Sans", sans-serif; font-weight: 700; font-size: clamp(26px, 3vw, 36px); line-height: 1.12; letter-spacing: -.02em; margin: 0 0 24px; text-wrap: balance; }
.brand-side ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; font-size: 15.5px; }
.brand-side li { padding-left: 28px; position: relative; opacity: .95; }
.brand-side li::before { content: ""; position: absolute; left: 0; top: .45em; width: 14px; height: 14px; border-radius: 50%; background: var(--cream); box-shadow: inset 0 0 0 4px var(--brand); outline: 2px solid var(--cream); outline-offset: -2px; }
.brand-side li b { font-weight: 600; }

/* ---- colonne formulaire ---- */
.form-side { display: flex; align-items: center; justify-content: center; padding-inline: 20px; padding-block: 48px; }
.panel { width: 100%; max-width: 420px; background: var(--surface); border: 1px solid var(--rule); border-radius: 14px; padding: 36px 34px 28px; box-shadow: var(--shadow); }
.logo-mobile { display: none; width: 150px; height: auto; border-radius: 8px; margin-bottom: 22px; }
.eyebrow { font-family: "IBM Plex Mono", ui-monospace, Menlo, monospace; font-size: 11.5px; letter-spacing: .08em; text-transform: uppercase; color: var(--brand-ink); margin: 0 0 6px; }
h1 { font-family: "Bricolage Grotesque", "IBM Plex Sans", sans-serif; font-weight: 700; font-size: 32px; letter-spacing: -.02em; line-height: 1.1; margin: 0 0 8px; }
.lede { color: var(--ink-2); margin: 0 0 24px; }
.field { display: grid; gap: 6px; margin-bottom: 16px; }
label { font-size: 13.5px; font-weight: 500; color: var(--ink-2); }
input[type=email], input[type=password], input[type=text] { width: 100%; font: inherit; color: var(--ink); background: var(--bg); border: 1px solid var(--rule); border-radius: 8px; padding: 11px 12px; transition: border-color .15s, box-shadow .15s; }
input:focus { outline: none; border-color: var(--focus); box-shadow: 0 0 0 3px color-mix(in srgb, var(--focus) 25%, transparent); }
.pw { position: relative; }
.pw input { padding-right: 88px; }
.toggle { position: absolute; right: 6px; top: 50%; transform: translateY(-50%); font: inherit; font-size: 13px; color: var(--brand-ink); background: transparent; border: 0; border-radius: 6px; padding: 6px 10px; cursor: pointer; }
.toggle:hover { background: var(--brand-soft); }
.toggle:focus-visible, .submit:focus-visible, .check input:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }
.check { display: flex; align-items: center; gap: 8px; font-weight: 400; margin: 4px 0 20px; cursor: pointer; }
.check input { width: 16px; height: 16px; accent-color: var(--brand); }
.submit { width: 100%; font: inherit; font-weight: 600; font-size: 15.5px; color: #fff; background: var(--brand); border: 0; border-radius: 8px; padding: 12px 16px; cursor: pointer; transition: background .15s; }
.submit:hover { background: #336D43; }
.submit:disabled { opacity: .7; cursor: wait; }
.alert { border-radius: 8px; padding: 10px 12px; font-size: 14px; margin-bottom: 18px; }
.alert.error { background: var(--bad-soft); color: var(--bad); border: 1px solid color-mix(in srgb, var(--bad) 35%, transparent); }
.alert.info { background: var(--info-soft); color: var(--info); }
.setup { font-size: 13.5px; background: var(--brand-soft); color: var(--ink-2); border-radius: 8px; padding: 10px 12px; margin: 18px 0 0; }
code { font-family: "IBM Plex Mono", ui-monospace, Menlo, monospace; font-size: 12.5px; overflow-wrap: anywhere; }
.foot { font-size: 12.5px; color: var(--muted); margin: 22px 0 0; text-align: center; }
[hidden] { display: none !important; }
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }

@media (max-width: 860px) {
  .login { grid-template-columns: 1fr; }
  .brand-side { display: none; }
  .logo-mobile { display: block; }
  .form-side { padding-block: 28px; align-items: flex-start; }
  .panel { padding: 28px 22px 22px; }
}