/* RevizBAC - Connexion (design "Glass Scholarly Split", fourni par l'utilisateur).
   Fichier dedie, charge uniquement par pages/login.php - n'affecte aucune
   autre page (register/forgot-password gardent le design auth-shell). */

.lgn, .lgn *, .lgn *::before, .lgn *::after {
    box-sizing: border-box;
}

.material-symbols-outlined {
    font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
    font-size: 22px;
    line-height: 1;
    vertical-align: middle;
}

.lgn {
    --lgn-primary: #4648d4;
    --lgn-secondary: #8127cf;
    --lgn-on-surface: #131b2e;
    --lgn-on-surface-variant: #464554;
    --lgn-outline: #767586;
    --lgn-outline-variant: #c7c4d7;
    --lgn-surface: #faf8ff;
    --lgn-surface-container-low: #f2f3ff;
    --lgn-error: #ba1a1a;
    --lgn-error-container: #ffdad6;
    background: var(--lgn-surface);
    color: var(--lgn-on-surface);
    font-family: 'Inter', sans-serif;
    min-height: 100dvh;
}

.lgn-main {
    display: flex;
    flex-direction: column;
    min-height: 100dvh;
    width: 100%;
    max-width: 100vw;
    overflow-x: hidden;
}

/* ---------------------------------------------------------------------- */
/* Panneau de marque (gauche) - masque sous 768px                          */
/* ---------------------------------------------------------------------- */
.lgn-brand {
    display: none;
    position: relative;
    flex-direction: column;
    justify-content: center;
    overflow: hidden;
    padding: 64px 40px;
    color: #ffffff;
    background:
        radial-gradient(rgba(255, 255, 255, 0.16) 1px, transparent 1.5px),
        linear-gradient(135deg, var(--lgn-primary) 0%, var(--lgn-secondary) 100%);
    background-size: 22px 22px, 100% 100%;
}

.lgn-brand-glow {
    position: absolute;
    bottom: -100px;
    right: -50px;
    width: 500px;
    height: 500px;
    opacity: 0.12;
    background: #ffffff;
    border-radius: 50%;
    filter: blur(100px);
    pointer-events: none;
}

.lgn-brand-inner {
    position: relative;
    z-index: 1;
    max-width: 34rem;
}

.lgn-brand-top {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 40px;
}

.lgn-brand-top img {
    width: 40px;
    height: 40px;
}

.lgn-brand-top span {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 24px;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.lgn-brand h1 {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: clamp(2rem, 3vw, 3rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.15;
    margin: 0 0 24px;
}

.lgn-brand-sub {
    font-size: 18px;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.8);
    max-width: 30rem;
    margin: 0 0 40px;
}

.lgn-benefits {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.lgn-benefits li {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.lgn-benefit-icon {
    flex: none;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 4px;
    width: 34px;
    height: 34px;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.1);
    transition: background 0.2s ease;
}

.lgn-benefits li:hover .lgn-benefit-icon {
    background: rgba(255, 255, 255, 0.2);
}

.lgn-benefit-title {
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.01em;
    margin: 0 0 4px;
    color: #ffffff;
}

.lgn-benefit-desc {
    font-size: 16px;
    line-height: 1.5;
    color: rgba(255, 255, 255, 0.7);
    margin: 0;
}

/* ---------------------------------------------------------------------- */
/* Formulaire (droite)                                                     */
/* ---------------------------------------------------------------------- */
.lgn-form-section {
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 64px 16px;
    background:
        radial-gradient(rgba(70, 72, 212, 0.05) 1px, transparent 1.5px),
        linear-gradient(160deg, #ece9fb 0%, var(--lgn-surface) 55%);
    background-size: 22px 22px, 100% 100%;
}

.lgn-card {
    position: relative;
    z-index: 1;
    background: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.6);
    border-radius: 24px;
    box-shadow:
        0 24px 60px -18px rgba(70, 72, 212, 0.28),
        0 8px 24px -10px rgba(19, 27, 46, 0.1);
    padding: 40px;
}

.lgn-mobile-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    margin-bottom: 40px;
}

.lgn-mobile-header img {
    width: 28px;
    height: 28px;
}

.lgn-mobile-header span {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 22px;
    font-weight: 700;
    color: var(--lgn-primary);
}

.lgn-form-wrap {
    width: 100%;
    max-width: 28rem;
    position: relative;
    z-index: 1;
}

.lgn-form-head {
    text-align: center;
    margin-bottom: 40px;
}

.lgn-form-head h2 {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 32px;
    font-weight: 700;
    color: var(--lgn-on-surface);
    margin: 0 0 4px;
}

.lgn-form-head p {
    color: var(--lgn-on-surface-variant);
    font-size: 16px;
    margin: 0;
}

.lgn-alert {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 12px 16px;
    border-radius: 12px;
    font-size: 14px;
    line-height: 1.5;
    margin-bottom: 24px;
}

.lgn-alert--danger {
    background: var(--lgn-error-container);
    color: var(--lgn-error);
}

.lgn-alert--success {
    background: #d7f5e3;
    color: #0f7a42;
}

.lgn-field {
    margin-bottom: 24px;
}

.lgn-field label {
    display: block;
    font-size: 12px;
    font-weight: 500;
    color: var(--lgn-on-surface-variant);
    margin: 0 0 4px;
    padding-left: 4px;
}

.lgn-field-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 4px;
}

.lgn-field-row label {
    padding-left: 0;
    margin: 0;
}

.lgn-field-row a {
    font-size: 12px;
    font-weight: 600;
    color: var(--lgn-primary);
    text-decoration: none;
}

.lgn-field-row a:hover {
    text-decoration: underline;
}

.lgn-input-group {
    position: relative;
}

.lgn-input-icon {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--lgn-outline);
    pointer-events: none;
    transition: color 0.2s ease;
}

.lgn-input-group:focus-within .lgn-input-icon {
    color: var(--lgn-primary);
}

.lgn-input {
    width: 100%;
    padding: 14px 16px 14px 48px;
    background: var(--lgn-surface-container-low);
    border: 1.5px solid transparent;
    border-radius: 14px;
    font-family: 'Inter', sans-serif;
    font-size: 16px;
    color: var(--lgn-on-surface);
    transition: all 0.2s ease;
}

.lgn-input::placeholder {
    color: rgba(118, 117, 134, 0.6);
}

.lgn-input:focus {
    outline: none;
    background: #ffffff;
    border-color: var(--lgn-primary);
    box-shadow: 0 0 0 4px rgba(70, 72, 212, 0.12);
}

.lgn-input--password {
    padding-right: 48px;
}

.lgn-toggle-password {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    padding: 0;
    color: var(--lgn-outline);
    cursor: pointer;
    display: flex;
}

.lgn-toggle-password:hover {
    color: var(--lgn-on-surface-variant);
}

.lgn-remember {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 0 4px;
    margin-bottom: 24px;
}

.lgn-remember input {
    width: 18px;
    height: 18px;
    border-radius: 5px;
    border: 1.5px solid var(--lgn-outline-variant);
    accent-color: var(--lgn-primary);
    cursor: pointer;
}

.lgn-remember label {
    font-size: 15px;
    color: var(--lgn-on-surface-variant);
    cursor: pointer;
    user-select: none;
}

.lgn-submit {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px;
    border: none;
    border-radius: 14px;
    color: #ffffff;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.01em;
    cursor: pointer;
    background: linear-gradient(135deg, var(--lgn-primary) 0%, var(--lgn-secondary) 100%);
    box-shadow: 0 4px 14px -2px rgba(70, 72, 212, 0.4);
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    margin-bottom: 8px;
}

.lgn-submit:hover {
    box-shadow: 0 10px 25px -5px rgba(70, 72, 212, 0.45);
    transform: translateY(-1px);
}

.lgn-submit:active {
    transform: scale(0.98);
}

.lgn-divider {
    display: flex;
    align-items: center;
    margin: 24px 0;
}

.lgn-divider::before,
.lgn-divider::after {
    content: '';
    flex-grow: 1;
    border-top: 1px solid rgba(199, 196, 215, 0.4);
}

.lgn-divider span {
    flex-shrink: 0;
    margin: 0 16px;
    color: var(--lgn-outline);
    font-size: 12px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.lgn-social-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.lgn-social-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 16px;
    border: 1.5px solid var(--lgn-outline-variant);
    border-radius: 14px;
    font-size: 14px;
    font-weight: 600;
    color: var(--lgn-on-surface);
    background: #ffffff;
    text-decoration: none;
    transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.lgn-social-btn:hover {
    background: var(--lgn-surface-container-low);
    transform: translateY(-1px);
}

.lgn-social-btn svg {
    flex: none;
    width: 20px;
    height: 20px;
}

.lgn-signup {
    margin-top: 40px;
    text-align: center;
}

.lgn-signup p {
    color: var(--lgn-on-surface-variant);
    font-size: 15px;
    margin: 0;
}

.lgn-signup a {
    color: var(--lgn-primary);
    font-weight: 600;
    margin-left: 4px;
    text-decoration: none;
}

.lgn-signup a:hover {
    text-decoration: underline;
}

.lgn-decor-a,
.lgn-decor-b {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
    filter: blur(90px);
    z-index: 0;
}

.lgn-decor-a {
    top: 64px;
    right: 64px;
    width: 256px;
    height: 256px;
    background: linear-gradient(135deg, var(--lgn-primary) 0%, var(--lgn-secondary) 100%);
    opacity: 0.05;
}

.lgn-decor-b {
    bottom: 64px;
    left: 64px;
    width: 384px;
    height: 384px;
    background: #0058be;
    opacity: 0.05;
}

.lgn-footer {
    position: relative;
    z-index: 1;
    margin-top: 24px;
    text-align: center;
}

.lgn-footer p {
    font-size: 12px;
    color: rgba(118, 117, 134, 0.6);
    margin: 0;
}

.lgn-back-home {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 16px;
    font-size: 13px;
    font-weight: 500;
    color: var(--lgn-outline);
    text-decoration: none;
}

.lgn-back-home:hover {
    color: var(--lgn-on-surface-variant);
}

.lgn-form-wrap--wide {
    max-width: 34rem;
}

/* Grille 2 colonnes (inscription : username/email, password/confirm, classe/sexe) */
.lgn-grid-2 {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0 16px;
}

@media (min-width: 560px) {
    .lgn-grid-2 {
        grid-template-columns: 1fr 1fr;
    }
}

.lgn-hint {
    display: block;
    font-size: 12px;
    color: var(--lgn-outline);
    margin-top: 6px;
    padding-left: 4px;
}

.lgn-select {
    width: 100%;
    padding: 14px 40px 14px 16px;
    background: var(--lgn-surface-container-low);
    border: 1.5px solid transparent;
    border-radius: 14px;
    font-family: 'Inter', sans-serif;
    font-size: 16px;
    color: var(--lgn-on-surface);
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23767586' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    transition: all 0.2s ease;
    cursor: pointer;
}

.lgn-select:focus {
    outline: none;
    background-color: #ffffff;
    border-color: var(--lgn-primary);
    box-shadow: 0 0 0 4px rgba(70, 72, 212, 0.12);
}

.lgn-input.is-invalid,
.lgn-select.is-invalid {
    border-color: var(--lgn-error);
    background-color: var(--lgn-error-container);
}

.lgn-input.is-valid,
.lgn-select.is-valid {
    border-color: #1a9c5c;
}

.lgn-checkbox-row {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 24px;
}

.lgn-checkbox-row input {
    flex: none;
    width: 18px;
    height: 18px;
    margin-top: 2px;
    border-radius: 5px;
    border: 1.5px solid var(--lgn-outline-variant);
    accent-color: var(--lgn-primary);
    cursor: pointer;
}

.lgn-checkbox-row label {
    font-size: 14px;
    line-height: 1.5;
    color: var(--lgn-on-surface-variant);
    cursor: pointer;
}

.lgn-checkbox-row a {
    color: var(--lgn-primary);
    font-weight: 600;
    text-decoration: none;
}

.lgn-checkbox-row a:hover {
    text-decoration: underline;
}

/* Badge icone circulaire (ex: mot de passe oublie) */
.lgn-icon-badge {
    width: 56px;
    height: 56px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--lgn-primary) 0%, var(--lgn-secondary) 100%);
    color: #ffffff;
    box-shadow: 0 8px 20px -6px rgba(70, 72, 212, 0.45);
}

.lgn-icon-badge .material-symbols-outlined {
    font-size: 26px;
}

/* Variante badge qui chevauche le bord superieur de la carte (mot de passe oublie) */
.lgn-icon-badge--overlap {
    position: relative;
    z-index: 2;
    margin: 0 auto -28px;
}

@media (max-width: 479.98px) {
    .lgn-card {
        padding: 28px 20px;
    }
}

/* ---------------------------------------------------------------------- */
/* Desktop / laptop (>=768px) : split-screen                               */
/* ---------------------------------------------------------------------- */
@media (min-width: 768px) {
    .lgn-main {
        flex-direction: row;
    }

    .lgn-brand {
        display: flex;
        width: 50%;
    }

    .lgn-mobile-header {
        display: none;
    }

    .lgn-form-section {
        padding: 64px 40px;
    }
}

@media (min-width: 1280px) {
    .lgn-brand,
    .lgn-form-section {
        padding-left: 64px;
        padding-right: 64px;
    }
}