/* ============================================================
   MIM — Design system commun des pages d'authentification
   (connexion, inscription, mot de passe oublié, vérification,
    changement de mot de passe, réinitialisation)
   ============================================================ */

:root {
    --bg-0: #08030f;
    --bg-1: #12081f;
    --bg-2: #1d0b2e;
    --panel: rgba(255, 255, 255, 0.045);
    --panel-strong: rgba(255, 255, 255, 0.07);
    --line: rgba(255, 255, 255, 0.09);
    --line-strong: rgba(255, 255, 255, 0.16);

    --text: #f3eefc;
    --text-soft: #c9bfe0;
    --dim: #998bb8;

    --violet: #8b5cf6;
    --violet-2: #7c3aed;
    --magenta: #d946ef;
    --gold: #e5a017;
    --gold-2: #f0b429;
    --green: #34d399;
    --red: #fb7185;

    --radius: 18px;
    --radius-sm: 12px;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    min-height: 100%;
    background: linear-gradient(165deg, var(--bg-0) 0%, var(--bg-1) 45%, var(--bg-2) 100%);
    background-color: var(--bg-1);
    color-scheme: dark;
}

body {
    min-height: 100vh;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, "Helvetica Neue", Arial, sans-serif;
    background: linear-gradient(165deg, var(--bg-0) 0%, var(--bg-1) 45%, var(--bg-2) 100%);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

/* Glow d'arrière-plan */
.auth-shell {
    position: relative;
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    align-items: center;
    gap: 40px;
    width: min(1160px, 92%);
    margin: 0 auto;
    padding: 48px 0;
}

.auth-shell::before {
    content: "";
    position: fixed;
    inset: -20% -20%;
    z-index: -1;
    pointer-events: none;
    background:
        radial-gradient(600px 420px at 15% 20%, rgba(124, 58, 237, 0.22), transparent 65%),
        radial-gradient(560px 400px at 85% 28%, rgba(217, 70, 239, 0.16), transparent 65%),
        radial-gradient(520px 380px at 55% 95%, rgba(229, 160, 23, 0.07), transparent 65%);
}

/* Variante : carte unique centrée (2fa, forgot, reset) */
.auth-center {
    grid-template-columns: 1fr;
    justify-items: center;
    gap: 0;
}

.auth-center .auth-showcase {
    display: none;
}

.auth-center .brand-mobile {
    display: flex;
}

/* ============================================================
   PANNEAU GAUCHE (présentation)
   ============================================================ */

.auth-showcase {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    max-width: 520px;
}

.auth-back {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    margin-bottom: 44px;
    font-size: 13.5px;
    font-weight: 600;
    color: var(--dim);
    transition: color 0.2s ease;
}

.auth-back svg {
    width: 15px;
    height: 15px;
}

.auth-back:hover {
    color: var(--text);
}

.showcase-brand {
    display: inline-flex;
    align-items: center;
    gap: 11px;
    margin-bottom: 26px;
}

.brand-mark {
    display: inline-grid;
    place-items: center;
    width: 38px;
    height: 38px;
    flex: none;
    border-radius: 11px;
    color: #fff;
    background: linear-gradient(135deg, var(--violet), var(--magenta));
    box-shadow: 0 6px 18px rgba(124, 58, 237, 0.45);
}

.brand-mark svg {
    width: 20px;
    height: 20px;
}

.brand-text {
    font-size: 18px;
    font-weight: 600;
    letter-spacing: -0.2px;
}

.brand-text strong {
    color: var(--gold);
}

.auth-showcase h1 {
    font-size: clamp(32px, 4.4vw, 46px);
    line-height: 1.12;
    font-weight: 800;
    letter-spacing: -0.8px;
    margin-bottom: 18px;
}

.grad {
    background: linear-gradient(90deg, var(--violet), var(--magenta));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

.showcase-sub {
    font-size: 16px;
    color: var(--text-soft);
    margin-bottom: 30px;
    max-width: 460px;
}

.showcase-points {
    display: flex;
    flex-direction: column;
    gap: 13px;
}

.showcase-points li {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 14.5px;
    color: var(--dim);
}

.dot-check {
    display: inline-grid;
    place-items: center;
    width: 19px;
    height: 19px;
    flex: none;
    border-radius: 50%;
    background: rgba(52, 211, 153, 0.14);
    color: var(--green);
    font-size: 12px;
    font-weight: 800;
}

/* ============================================================
   CARTE (panneau droit / problème)
   ============================================================ */

.auth-panel {
    display: flex;
    justify-content: center;
    width: 100%;
}

.auth-card {
    width: 100%;
    max-width: 460px;
    padding: 40px 38px 34px;
    border-radius: 22px;
    border: 1px solid var(--line-strong);
    background: linear-gradient(170deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
    box-shadow: 0 30px 70px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(255, 255, 255, 0.03) inset, 0 0 60px rgba(124, 58, 237, 0.08);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.auth-card-lg {
    max-width: 500px;
}

.auth-card-sm {
    max-width: 420px;
}

.brand-mobile {
    display: none;
    align-items: center;
    justify-content: center;
    gap: 11px;
    margin-bottom: 24px;
}

.brand-mobile .brand-mark {
    width: 32px;
    height: 32px;
    border-radius: 9px;
}

.brand-mobile .brand-mark svg {
    width: 17px;
    height: 17px;
}

.brand-mobile .brand-text {
    font-size: 16px;
}

.auth-head {
    text-align: center;
    margin-bottom: 26px;
}

.auth-head h2 {
    font-size: 30px;
    font-weight: 800;
    letter-spacing: -0.6px;
    margin-bottom: 6px;
}

.auth-sub {
    font-size: 14.5px;
    color: var(--dim);
    text-align: center;
    margin-bottom: 4px;
}

/* ============================================================
   MESSAGES (loginMessage / formMessage / forgotMessage /
   verifyMessage / resetMessage)
   ============================================================ */

#loginMessage,
#formMessage,
#forgotMessage,
#verifyMessage,
#resetMessage {
    min-height: 20px;
    margin: 0 0 14px;
    padding: 11px 14px;
    border-radius: var(--radius-sm);
    font-size: 13.5px;
    font-weight: 500;
    text-align: left;
    border: 1px solid transparent;
}

#loginMessage:empty,
#formMessage:empty,
#forgotMessage:empty,
#verifyMessage:empty,
#resetMessage:empty {
    display: none;
}

#loginMessage.success,
#formMessage.success,
#forgotMessage.success,
#verifyMessage.success,
#resetMessage.success {
    color: var(--green);
    background: rgba(52, 211, 153, 0.1);
    border-color: rgba(52, 211, 153, 0.3);
}

#loginMessage.error,
#formMessage.error,
#forgotMessage.error,
#verifyMessage.error,
#resetMessage.error {
    color: var(--red);
    background: rgba(251, 113, 133, 0.1);
    border-color: rgba(251, 113, 133, 0.32);
}

/* ============================================================
   FORMULAIRE
   ============================================================ */

.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    margin-bottom: 7px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-soft);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--line-strong);
    background: rgba(255, 255, 255, 0.045);
    color: var(--text);
    font-size: 14.5px;
    font-family: inherit;
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.form-group input::placeholder {
    color: rgba(153, 139, 184, 0.65);
}

.form-group input:focus,
.form-group select:focus {
    border-color: var(--violet);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.22);
    background: rgba(255, 255, 255, 0.07);
}

.form-group input:disabled,
.form-group select:disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

.form-group select {
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23c9bfe0' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 38px;
}

.form-group option {
    color: var(--text);
    background: #170a29;
}

.form-group small {
    display: block;
    margin-top: 6px;
    font-size: 12.5px;
    color: var(--dim);
}

/* Champ code 2FA */
.form-group input[name="code"] {
    text-align: center;
    font-size: 22px;
    font-weight: 700;
    letter-spacing: 8px;
    font-variant-numeric: tabular-nums;
    padding: 13px 14px;
}

/* Indications d'aide */
.form-hint {
    margin-top: 7px;
    font-size: 12.5px;
    color: var(--dim);
    text-align: left;
}

/* Statut username (change-password.js) */
.username-status {
    display: block;
    margin-top: 6px;
    font-size: 12.5px;
    font-weight: 600;
}

.username-ok {
    color: var(--green);
}

.username-taken {
    color: var(--red);
}

/* Erreurs de champ (form-utils.js) */
.form-group.has-error input,
.form-group.has-error select {
    border-color: var(--red);
    box-shadow: 0 0 0 3px rgba(251, 113, 133, 0.16);
}

input.input-error {
    border-color: var(--red) !important;
}

.field-error-msg {
    display: block;
    margin-top: 6px;
    font-size: 12.5px;
    font-weight: 600;
    color: var(--red);
}

/* Indicateur de force du mot de passe (password-strength.js) */
.password-meter {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-top: 8px;
}

.meter-bar {
    flex: 1;
    height: 4px;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.1);
    transition: background 0.2s ease;
}

.meter-bar.weak { background: var(--red); }
.meter-bar.medium { background: var(--gold-2); }
.meter-bar.strong { background: var(--green); }

.meter-label {
    min-width: 52px;
    text-align: right;
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.8px;
}

.meter-label.pw-weak   { color: var(--red); }
.meter-label.pw-medium { color: var(--gold-2); }
.meter-label.pw-strong { color: var(--green); }

input.pw-weak   { border-color: var(--red); }
input.pw-medium { border-color: var(--gold-2); }
input.pw-strong { border-color: var(--green); }

/* ============================================================
   BOUTONS
   ============================================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 13px 22px;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 700;
    line-height: 1;
    font-family: inherit;
    cursor: pointer;
    border: 1px solid transparent;
    transition: transform 0.2s ease, box-shadow 0.25s ease, background 0.25s ease, color 0.25s ease, border-color 0.25s ease;
}

.btn:hover {
    transform: translateY(-2px);
}

.btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.btn-block {
    width: 100%;
}

.btn-gold {
    background: linear-gradient(135deg, var(--gold), var(--gold-2));
    color: #221200;
    box-shadow: 0 10px 26px rgba(229, 160, 23, 0.35);
}

.btn-gold:hover {
    box-shadow: 0 14px 34px rgba(229, 160, 23, 0.5);
}

/* Bouton Google */
.google-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--line-strong);
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-soft);
    font-size: 14.5px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: border-color 0.2s ease, background 0.2s ease, transform 0.2s ease;
}

.google-btn:hover {
    border-color: rgba(255, 255, 255, 0.3);
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-2px);
}

.divider {
    display: flex;
    align-items: center;
    gap: 14px;
    margin: 22px 0;
    color: var(--dim);
    font-size: 12.5px;
    text-transform: uppercase;
    letter-spacing: 1.4px;
    text-align: center;
}

.divider::before,
.divider::after {
    content: "";
    flex: 1;
    height: 1px;
    background: var(--line-strong);
}

/* ============================================================
   LIENS
   ============================================================ */

.auth-link {
    margin-top: 16px;
    text-align: center;
    font-size: 14px;
    color: var(--dim);
}

.auth-link a {
    color: var(--text-soft);
    font-weight: 600;
    transition: color 0.2s ease;
}

.auth-link a:hover {
    color: var(--gold-2);
}

.auth-link .link-strong {
    color: var(--gold-2);
}

.auth-link .link-strong:hover {
    color: var(--gold);
}

.auth-bottom {
    line-height: 1.7;
}

.login-link {
    margin-top: 22px;
    padding-top: 20px;
    border-top: 1px solid var(--line);
    text-align: center;
    font-size: 14px;
    color: var(--dim);
}

.login-link a {
    color: var(--gold-2);
    font-weight: 700;
    transition: color 0.2s ease;
}

.login-link a:hover {
    color: var(--gold);
}

/* Retour vers la connexion (pages compactes) */
.back-login {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    width: 100%;
    margin-top: 20px;
    font-size: 14px;
    font-weight: 600;
    color: var(--dim);
    transition: color 0.2s ease;
}

.back-login:hover {
    color: var(--gold-2);
}

/* Case à cocher des conditions */
.terms {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin: 4px 0 18px;
    font-size: 13.5px;
    color: var(--dim);
    text-align: left;
}

.terms input[type="checkbox"] {
    flex: none;
    width: 17px;
    height: 17px;
    margin-top: 3px;
    accent-color: var(--gold);
    cursor: pointer;
}

.terms a {
    color: var(--text-soft);
    font-weight: 600;
    text-decoration: underline;
    text-underline-offset: 3px;
}

.terms a:hover {
    color: var(--gold-2);
}

.terms.has-error {
    color: var(--red);
}

/* Note basse du formulaire d'inscription */
.register-note {
    padding: 11px 14px;
    margin: 0 0 20px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: var(--text-soft);
    background: rgba(139, 92, 246, 0.1);
    border: 1px solid rgba(139, 92, 246, 0.25);
    text-align: left;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (max-width: 980px) {
    .auth-shell {
        grid-template-columns: 1fr;
        gap: 24px;
        padding: 40px 0;
    }

    .auth-showcase {
        display: none;
    }

    .auth-panel {
        padding-top: 24px;
    }

    .brand-mobile {
        display: flex;
    }

    .auth-card {
        padding: 34px 26px 30px;
    }
}

@media (max-width: 480px) {
    .auth-shell {
        width: 94%;
        padding: 28px 0;
    }
}