:root {
      --bleu: #3a5a72; --bleu-light: #4e728f; --bleu-pale: #d8e5ed;
      --coral: #c47e6b; --coral-light: #d9a090; --coral-pale: #f2ddd7;
      --creme: #faf7f4; --dark: #1e2d38;
    }
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    body { font-family: 'DM Sans', sans-serif; background: var(--creme); color: var(--dark); min-height: 100vh; display: flex; flex-direction: column; }

    /* TOPBAR */
    .topbar { background: var(--bleu); color: white; padding: 0.75rem 1.5rem; display: flex; align-items: center; justify-content: space-between; }
    .topbar-logo { font-family: 'Cormorant Garamond', serif; font-size: 1.25rem; font-weight: 600; color: white; text-decoration: none; }
    .topbar-logo em { color: #d9a090; font-style: normal; }
    .topbar-back { font-size: 0.82rem; color: rgba(255,255,255,0.7); text-decoration: none; }
    .topbar-back:hover { color: white; }

    /* CARD */
    .auth-wrap { flex: 1; display: flex; align-items: center; justify-content: center; padding: 2rem 1rem 3rem; }
    .auth-card { background: white; border-radius: 16px; padding: 2.25rem 2rem; box-shadow: 0 4px 30px rgba(0,0,0,0.08); width: 100%; max-width: 430px; }

    /* TABS */
    .tabs { display: flex; border-radius: 10px; overflow: hidden; border: 1px solid var(--bleu-pale); margin-bottom: 1.75rem; }
    .tab { flex: 1; text-align: center; padding: 0.6rem; font-size: 0.85rem; font-weight: 500; cursor: pointer; text-decoration: none; color: var(--bleu); background: white; transition: background 0.15s; }
    .tab.active { background: var(--bleu); color: white; }

    /* TITRE */
    .auth-title { font-family: 'Cormorant Garamond', serif; font-size: 1.6rem; font-weight: 600; color: var(--bleu); margin-bottom: 0.25rem; }
    .auth-sub   { font-size: 0.83rem; color: #888; margin-bottom: 1.5rem; }

    /* FORM */
    .form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; }
    .form-group { margin-bottom: 1rem; }
    .form-group label { display: block; font-size: 0.78rem; font-weight: 600; color: var(--bleu); margin-bottom: 0.3rem; letter-spacing: 0.02em; }
    .form-group label .req { color: var(--coral); }
    .form-group input { width: 100%; padding: 0.6rem 0.85rem; border: 1px solid #cdd9e3; border-radius: 8px; font-size: 0.9rem; font-family: 'DM Sans', sans-serif; color: var(--dark); outline: none; transition: border-color 0.2s, box-shadow 0.2s; }
    .form-group input:focus { border-color: var(--bleu); box-shadow: 0 0 0 3px rgba(58,90,114,0.10); }
    .form-hint { font-size: 0.75rem; color: #aaa; margin-top: 0.2rem; }

    /* RGPD */
    .rgpd-block { background: #f4f8fb; border-radius: 10px; padding: 1rem; margin-bottom: 1.1rem; }
    .rgpd-check { display: flex; align-items: flex-start; gap: 0.6rem; font-size: 0.8rem; color: #555; line-height: 1.55; cursor: pointer; }
    .rgpd-check input { margin-top: 0.15rem; accent-color: var(--bleu); flex-shrink: 0; }
    .rgpd-check a { color: var(--bleu); }
    .rgpd-detail { font-size: 0.75rem; color: #aaa; margin-top: 0.5rem; line-height: 1.5; }

    /* SUBMIT */
    .btn-submit { width: 100%; background: var(--coral); color: white; border: none; padding: 0.75rem; border-radius: 8px; font-size: 0.95rem; font-family: 'DM Sans', sans-serif; font-weight: 500; cursor: pointer; transition: background 0.2s; }
    .btn-submit:hover { background: var(--coral-light); }

    /* MESSAGES */
    .msg-erreur { background: #fde8e8; color: #8b1c1c; border-radius: 8px; padding: 0.75rem 1rem; font-size: 0.85rem; margin-bottom: 1rem; }
    .msg-succes { background: #e8f5e9; color: #2e7d32; border-radius: 8px; padding: 0.75rem 1rem; font-size: 0.85rem; margin-bottom: 1rem; }

    .oubli { font-size: 0.78rem; color: var(--bleu); text-align: right; margin-top: -0.5rem; margin-bottom: 1rem; display: block; text-decoration: none; }
    .oubli:hover { text-decoration: underline; }

    .sep { text-align: center; font-size: 0.78rem; color: #ccc; margin: 1.1rem 0; }