:root {
  --ink: #0E0E10; --ink-soft: #2A2A2D; --muted: #555558;
  --paper: #FFFFFF; --paper-light: #FAFAFA; --paper-deep: #F5F5F5;
  --violet: #6C3FA0; --violet-deep: #4A2870; --sky: #5BC0EB;
  --rule: rgba(14,14,16,0.1); --rule-strong: rgba(14,14,16,0.35);
  --violet-tint: rgba(108,63,160,0.06); --violet-bg: rgba(108,63,160,0.08);
  --warning: #C8553D;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body { background: var(--paper); color: var(--ink); font-family: 'Inter', sans-serif; font-size: 16px; line-height: 1.55; -webkit-font-smoothing: antialiased; min-height: 100vh; display: flex; flex-direction: column; }
main { flex: 1; }

/* En-tete / pied simples */
.simple-header { padding: 28px 0; border-bottom: 1px solid var(--rule); }
.simple-header .wrap { max-width: 1080px; margin: 0 auto; padding: 0 32px; display: flex; justify-content: space-between; align-items: center; }
.logo { font-family: 'Fraunces', serif; font-variation-settings: "opsz" 144, "wght" 500; font-size: 1.2rem; color: var(--ink); text-decoration: none; }
.logo em { font-style: italic; color: var(--violet); font-variation-settings: "opsz" 144, "wght" 480, "SOFT" 100, "WONK" 1; }
.simple-header .meta { font-family: 'JetBrains Mono', monospace; font-size: 0.7rem; letter-spacing: 0.14em; color: var(--muted); text-transform: uppercase; }

.simple-footer { padding: 32px 0; border-top: 1px solid var(--rule); font-family: 'JetBrains Mono', monospace; font-size: 0.7rem; letter-spacing: 0.04em; color: var(--muted); margin-top: 60px; }
.simple-footer .wrap { max-width: 1080px; margin: 0 auto; padding: 0 32px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 16px; }

/* Eyebrow + titres */
.eyebrow { font-family: 'JetBrains Mono', monospace; font-size: 0.72rem; letter-spacing: 0.18em; color: var(--violet); text-transform: uppercase; display: inline-block; padding-bottom: 8px; border-bottom: 2px solid var(--violet); margin-bottom: 24px; }

/* Champs de formulaire */
.field-group { display: flex; flex-direction: column; gap: 22px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { display: flex; flex-direction: column; gap: 8px; }
.field label { font-family: 'JetBrains Mono', monospace; font-size: 0.7rem; letter-spacing: 0.14em; color: var(--violet); text-transform: uppercase; }
.field label .required { color: var(--violet); margin-left: 4px; }
.field input, .field select { font-family: 'Inter', sans-serif; font-size: 0.98rem; padding: 14px 16px; border: 1px solid var(--rule-strong); background: var(--paper); color: var(--ink); outline: none; transition: border-color 0.2s; }
.field input:focus, .field select:focus { border-color: var(--violet); }
.field .hint { font-size: 0.8rem; color: var(--muted); margin-top: 4px; }
.field .forgot { font-size: 0.82rem; color: var(--muted); text-align: right; margin-top: -4px; }
.field .forgot a { color: var(--violet); text-decoration: none; }
.field .forgot a:hover { text-decoration: underline; }

.checkbox-field { display: grid; grid-template-columns: 24px 1fr; gap: 12px; align-items: start; margin-top: 8px; }
.checkbox-field input { width: 18px; height: 18px; accent-color: var(--violet); margin-top: 2px; }
.checkbox-field label { font-size: 0.88rem; color: var(--ink-soft); line-height: 1.5; cursor: pointer; }
.checkbox-field a { color: var(--violet); text-decoration: underline; }

/* Boutons */
.actions { margin-top: 32px; display: flex; flex-direction: column; gap: 16px; }
.btn-primary { display: inline-flex; align-items: center; justify-content: center; gap: 10px; background: var(--ink); color: var(--paper); padding: 16px 28px; font-family: 'Inter', sans-serif; font-size: 0.95rem; font-weight: 500; text-decoration: none; border: 1px solid var(--ink); transition: all 0.25s ease; cursor: pointer; width: 100%; }
.btn-primary:hover { background: var(--violet); border-color: var(--violet); }
.btn-primary span { transition: transform 0.25s ease; }
.btn-primary:hover span { transform: translateX(4px); }

/* Lien bas de carte */
.switch-line { text-align: center; padding-top: 24px; border-top: 1px solid var(--rule); margin-top: 24px; font-size: 0.9rem; color: var(--muted); }
.switch-line a { color: var(--violet); text-decoration: none; font-weight: 500; }
.switch-line a:hover { text-decoration: underline; }
.switch-line .note { font-size: 0.82rem; color: var(--muted); margin-top: 12px; line-height: 1.5; }

/* Messages d'erreur (flash + auth) */
.form-alert { background: rgba(200,85,61,0.06); border-left: 3px solid var(--warning); padding: 14px 18px; margin-bottom: 24px; font-size: 0.88rem; color: var(--ink-soft); }
.form-alert ul { margin: 0; padding-left: 18px; }

/* Carte d'information (register) */
.info-card { background: var(--violet-tint); border-left: 3px solid var(--violet); padding: 18px 24px; margin-bottom: 32px; }
.info-card .label { font-family: 'JetBrains Mono', monospace; font-size: 0.7rem; letter-spacing: 0.14em; color: var(--violet); text-transform: uppercase; margin-bottom: 6px; }
.info-card p { font-size: 0.9rem; color: var(--ink-soft); line-height: 1.5; }

/* --- Ecran 06 : connexion --- */
.login-main { display: flex; align-items: center; padding: 60px 0; }
.login-wrap { max-width: 480px; margin: 0 auto; padding: 0 32px; width: 100%; }
.login-wrap h1 { font-family: 'Fraunces', serif; font-variation-settings: "opsz" 144, "wght" 380; font-size: 2.2rem; line-height: 1.1; letter-spacing: -0.02em; margin-bottom: 16px; }
.login-wrap h1 em { font-style: italic; color: var(--violet); font-variation-settings: "opsz" 144, "wght" 350, "SOFT" 100, "WONK" 1; }
.login-wrap .lede { font-size: 0.98rem; color: var(--ink-soft); margin-bottom: 36px; }

/* --- Ecran 07 : creation de compte --- */
.register-main { padding: 60px 0; }
.register-wrap { max-width: 580px; margin: 0 auto; padding: 0 32px; }
.register-wrap h1 { font-family: 'Fraunces', serif; font-variation-settings: "opsz" 144, "wght" 380; font-size: 2.2rem; line-height: 1.1; letter-spacing: -0.02em; margin-bottom: 16px; }
.register-wrap h1 em { font-style: italic; color: var(--violet); font-variation-settings: "opsz" 144, "wght" 350, "SOFT" 100, "WONK" 1; }
.register-wrap .lede { font-size: 0.98rem; color: var(--ink-soft); margin-bottom: 36px; line-height: 1.6; }

/* --- Ecran 05 : activation cohorte --- */
.activation { padding: 80px 0 60px; }
.activation .wrap { max-width: 720px; margin: 0 auto; padding: 0 32px; }
.activation h1 { font-family: 'Fraunces', serif; font-variation-settings: "opsz" 144, "wght" 380; font-size: clamp(2.2rem, 4.5vw, 3rem); line-height: 1.05; letter-spacing: -0.025em; margin-bottom: 24px; }
.activation h1 em { font-style: italic; color: var(--violet); font-variation-settings: "opsz" 144, "wght" 350, "SOFT" 100, "WONK" 1; }
.activation .lede { font-size: 1.05rem; line-height: 1.65; color: var(--ink-soft); margin-bottom: 0; }

.cohort-badge { display: inline-flex; flex-direction: column; gap: 4px; padding: 18px 24px; background: var(--violet-tint); border-left: 3px solid var(--violet); margin: 36px 0; }
.cohort-badge .label { font-family: 'JetBrains Mono', monospace; font-size: 0.7rem; letter-spacing: 0.16em; color: var(--violet); text-transform: uppercase; }
.cohort-badge .value { font-family: 'Fraunces', serif; font-size: 1.15rem; font-variation-settings: "opsz" 144, "wght" 460; color: var(--ink); }

.form-block { background: var(--paper-light); border: 1px solid var(--rule); padding: 48px; margin-top: 16px; }
.form-block h2 { font-family: 'Fraunces', serif; font-size: 1.35rem; font-variation-settings: "opsz" 144, "wght" 440; margin-bottom: 8px; }
.form-block .sub { font-size: 0.9rem; color: var(--muted); margin-bottom: 32px; }

.rgpd-note { font-family: 'JetBrains Mono', monospace; font-size: 0.72rem; letter-spacing: 0.04em; color: var(--muted); line-height: 1.55; margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--rule); }

/* Page token invalide */
.invalide { padding: 90px 0; }
.invalide .wrap { max-width: 620px; margin: 0 auto; padding: 0 32px; }
.invalide h1 { font-family: 'Fraunces', serif; font-variation-settings: "opsz" 144, "wght" 380; font-size: 2rem; line-height: 1.1; margin-bottom: 16px; }
.invalide h1 em { font-style: italic; color: var(--violet); font-variation-settings: "opsz" 144, "wght" 350, "SOFT" 100, "WONK" 1; }
.invalide p { font-size: 1rem; color: var(--ink-soft); margin-bottom: 24px; }

@media (max-width: 700px) {
  .form-block { padding: 28px; }
  .field-row { grid-template-columns: 1fr; }
}