/* ============================================================================
   AUTHENTICATION & ONBOARDING (LOGIN, SIGNUP, & 2FA)
   Mobile-First Responsive Layout & High-Contrast Touch Design
   ============================================================================ */

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

.auth-page-wrapper {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color: var(--ug-black-surface, #0f1117);
    padding: 24px 16px;
    width: 100%;
}

.auth-card-box {
    background-color: var(--ug-black-card, #161922);
    border: 1px solid var(--ug-border, #282d3d);
    border-radius: var(--radius-xl, 14px);
    width: 440px;
    max-width: 100%;
    overflow: hidden;
    box-shadow: 0 16px 36px rgba(0, 0, 0, 0.55);
}

.auth-card-box.auth-card-wide {
    width: 490px;
}

.auth-card-head {
    padding: 24px 24px 14px;
    text-align: center;
}

.auth-card-body {
    padding: 0 24px 24px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.auth-card-footer {
    padding: 14px 24px;
    background-color: var(--ug-black-surface, #0f1117);
    border-top: 1px solid var(--ug-border, #282d3d);
    text-align: center;
    font-size: 0.82rem;
    color: var(--ug-text-muted, #8b949e);
}

.auth-card-footer a {
    color: var(--ug-yellow, #ffd100);
    font-weight: 700;
    text-decoration: none;
}

.auth-card-footer a:hover {
    text-decoration: underline;
    color: #ffffff;
}

.alert-banner {
    padding: 10px 14px;
    border-radius: var(--radius-md, 8px);
    font-size: 0.82rem;
    font-weight: 600;
    line-height: 1.4;
}

.alert-banner.error {
    background-color: rgba(217, 0, 0, 0.15);
    border: 1px solid rgba(217, 0, 0, 0.45);
    color: #f87171;
}

.alert-banner.warning {
    background-color: rgba(252, 220, 4, 0.15);
    border: 1px solid rgba(252, 220, 4, 0.45);
    color: var(--ug-yellow, #ffd100);
}

.alert-banner.success {
    background-color: rgba(35, 134, 54, 0.15);
    border: 1px solid rgba(35, 134, 54, 0.45);
    color: #3fb950;
}

.form-field {
    display: flex;
    flex-direction: column;
    gap: 6px;
    width: 100%;
}

.form-field label {
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--ug-text-muted, #8b949e);
}

.form-field input[type="text"],
.form-field input[type="email"],
.form-field input[type="password"] {
    background-color: var(--ug-black-surface, #0f1117);
    border: 1px solid var(--ug-border, #282d3d);
    color: #ffffff;
    padding: 11px 14px;
    border-radius: var(--radius-md, 8px);
    font-size: 1rem; /* 16px standard to eliminate iOS auto-zoom */
    outline: none;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
    width: 100%;
    min-height: 44px; /* Accessible minimum touch target */
}

.form-field input:focus {
    border-color: var(--ug-yellow, #ffd100);
    box-shadow: 0 0 0 2px rgba(255, 209, 0, 0.25);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    width: 100%;
}

/* ============================================================================
   RESPONSIVE MEDIA QUERIES (Mobile & Tablet)
   ============================================================================ */

@media (max-width: 600px) {
    .auth-page-wrapper {
        padding: 16px 12px;
        justify-content: flex-start;
        padding-top: 20px;
    }

    .auth-card-box,
    .auth-card-box.auth-card-wide {
        width: 100%;
        max-width: 100%;
        border-radius: 12px;
        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.45);
    }

    .auth-card-head {
        padding: 20px 16px 12px;
    }

    .auth-card-head h1 {
        font-size: 1.22rem !important;
    }

    .auth-card-body {
        padding: 0 16px 20px;
        gap: 14px;
    }

    .form-row {
        grid-template-columns: 1fr;
        gap: 14px;
    }

    .form-field input[type="text"],
    .form-field input[type="email"],
    .form-field input[type="password"] {
        padding: 12px 14px;
        font-size: 1rem;
        min-height: 48px;
    }

    .btn.btn-primary,
    .auth-btn-primary {
        padding: 14px 16px !important;
        font-size: 0.95rem !important;
        min-height: 48px;
        width: 100%;
    }

    .auth-card-footer {
        padding: 14px 16px;
        font-size: 0.8rem;
    }
}