/* ── Auth Layout ── */
.auth-body {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary) 0%, #162240 50%, var(--color-primary) 100%);
    padding: 1rem;
}

.auth-container {
    width: 100%;
    max-width: 420px;
}

.auth-card {
    background: #fff;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 2.5rem 2rem 2rem;
    position: relative;
    overflow: hidden;
}

.auth-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-secondary), var(--color-primary));
}

.auth-header {
    text-align: center;
    margin-bottom: 2rem;
}

.auth-title {
    margin: 0;
    font-size: 1.75rem;
    font-weight: 800;
    line-height: 1.2;
}

.auth-logo {
    display: inline-block;
    color: var(--color-primary);
    text-decoration: none;
}

.auth-logo:hover,
.auth-logo:focus-visible { color: var(--color-secondary); }

.auth-logo-img {
    display: block;
    width: auto;
    height: 52px;
    max-width: min(240px, 74vw);
    object-fit: contain;
}

.auth-tagline {
    font-size: .8rem;
    color: var(--color-text-muted);
    margin: .35rem 0 0;
    letter-spacing: .02em;
}

/* ── Auth Form ── */
.auth-form .form-floating {
    position: relative;
}

.auth-form .form-control {
    background: var(--color-light);
    border: 1.5px solid transparent;
    border-radius: var(--radius);
    transition: all .2s;
    font-size: .9rem;
}

.auth-form .form-control:focus {
    background: #fff;
    border-color: var(--color-secondary);
    box-shadow: 0 0 0 3px rgba(var(--color-secondary-rgb), .1);
}

.auth-form .form-control.is-invalid {
    border-color: var(--color-danger);
}

.auth-submit {
    height: 52px;
    font-size: .95rem;
    border-radius: var(--radius);
    position: relative;
    overflow: hidden;
}

.auth-link {
    color: var(--color-secondary);
    font-weight: 500;
    font-size: .85rem;
}
.auth-link:hover { color: var(--color-primary); }

.auth-footer {
    text-align: center;
    margin-top: 1.5rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--color-border);
}
.auth-footer p { margin: 0; font-size: .85rem; color: var(--color-text-light); }

/* ── OTP Inputs ── */
.otp-digit {
    width: 56px !important;
    height: 56px !important;
    font-size: 1.5rem;
    font-weight: 700;
    border-radius: var(--radius);
    border: 2px solid var(--color-border);
    background: var(--color-light);
    padding: 0;
}

.otp-digit:focus {
    border-color: var(--color-secondary);
    box-shadow: 0 0 0 3px rgba(var(--color-secondary-rgb), .15);
    background: #fff;
}

/* ── Form Check ── */
.auth-form .form-check-input:checked {
    background-color: var(--color-secondary);
    border-color: var(--color-secondary);
}

/* ── Responsive ── */
@media (max-width: 480px) {
    .auth-card { padding: 2rem 1.25rem 1.75rem; }
    .otp-digit { width: 48px !important; height: 48px !important; font-size: 1.25rem; }
}