.login-page {
    min-height: calc(100dvh - var(--ud-header-height));
    display: grid;
    place-items: center;
    padding: 34px;
}

.login-card {
    width: min(470px, 100%);
    padding: 42px 36px;
    text-align: center;
}

.back-link {
    display: inline-block;
    margin-bottom: 22px;
    color: var(--ud-text-muted);
    text-decoration: none;
    font-size: 14px;
}
.back-link:hover { color: var(--ud-primary-2); }

.symbol { color: var(--ud-primary-2); font-size: 42px; margin-bottom: 16px; }

.login-card h1,
h1 { margin: 0; font-size: 42px; letter-spacing: -0.04em; }
.subtitle { margin: 16px auto 30px; }

.login-preferences {
    margin: 0 0 24px;
    padding: 18px;
    display: grid;
    gap: 16px;
    text-align: left;
    border: 1px solid var(--ud-border);
    border-radius: 22px;
    background: rgba(255, 255, 255, 0.04);
}

.login-preferences-title {
    margin: 0 0 6px;
    font-size: 15px;
    font-weight: 800;
    color: var(--ud-text);
}

.login-preferences-note {
    margin: 0;
    font-size: 13px;
    line-height: 1.6;
    color: var(--ud-text-soft);
}

.login-preferences-controls {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.login-preferences .ud-language-control,
.login-preferences .ud-theme-control {
    width: 100%;
    margin: 0;
    display: grid;
    gap: 8px;
    color: var(--ud-text-soft);
}

.login-preferences .ud-language-control span,
.login-preferences .ud-theme-control span {
    white-space: normal;
}

.login-preferences .ud-language-control select,
.login-preferences .ud-theme-control select {
    width: 100%;
    min-width: 0;
}

.auth-switch {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    margin: 0 0 22px;
}

.auth-switch-btn {
    appearance: none;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.03);
    color: var(--ud-text-muted);
    border-radius: 16px;
    padding: 12px 14px;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0.01em;
    cursor: pointer;
    transition:
        transform 150ms ease,
        border-color 150ms ease,
        color 150ms ease,
        background 150ms ease,
        box-shadow 150ms ease;
}

.auth-switch-btn:hover {
    transform: translateY(-1px);
    border-color: rgba(255, 255, 255, 0.18);
    color: var(--ud-text);
}

.auth-switch-btn.active {
    color: #081018;
    border-color: rgba(255, 255, 255, 0);
    background:
        linear-gradient(135deg, var(--ud-primary-2), var(--ud-primary-1));
    box-shadow: 0 18px 36px rgba(41, 178, 255, 0.18);
}

.social-auth {
    text-align: left;
    margin-bottom: 24px;
}

.social-auth-title {
    margin: 0 0 6px;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--ud-text-muted);
}

.social-auth-copy {
    margin: 0 0 14px;
    font-size: 14px;
    color: var(--ud-text-soft);
}

.social-buttons {
    display: grid;
    gap: 12px;
}

.social-provider {
    display: grid;
    gap: 6px;
}

.social-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    border-radius: 18px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    background:
        linear-gradient(135deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.03)),
        rgba(11, 18, 30, 0.9);
    color: var(--ud-text);
    padding: 14px 16px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition:
        transform 150ms ease,
        border-color 150ms ease,
        box-shadow 150ms ease;
}

.social-btn:hover:not(:disabled) {
    transform: translateY(-1px);
    border-color: rgba(255, 255, 255, 0.28);
    box-shadow: 0 18px 34px rgba(0, 0, 0, 0.28);
}

.social-btn:disabled {
    opacity: 0.58;
    cursor: not-allowed;
}

.social-btn.provider-google::before,
.social-btn.provider-microsoft::before,
.social-btn.provider-apple::before {
    content: "";
    width: 12px;
    height: 12px;
    border-radius: 999px;
    flex: 0 0 12px;
}

.social-btn.provider-google::before {
    background: #ea4335;
    box-shadow: 14px 0 0 #fbbc05, 28px 0 0 #34a853, 42px 0 0 #4285f4;
}

.social-btn.provider-microsoft::before {
    border-radius: 3px;
    background: #f25022;
    box-shadow:
        14px 0 0 #7fba00,
        0 14px 0 #00a4ef,
        14px 14px 0 #ffb900;
}

.social-btn.provider-apple::before {
    background: linear-gradient(180deg, #f5f5f7, #8e8e93);
}

.social-message {
    min-height: 20px;
    margin: 12px 0 0;
    font-size: 13px;
    color: var(--ud-text-muted);
}

.social-provider-note {
    margin: 0 4px;
    font-size: 12px;
    line-height: 1.5;
    color: var(--ud-text-soft);
}

.login-divider {
    display: flex;
    align-items: center;
    gap: 14px;
    margin: 18px 0 20px;
    color: var(--ud-text-muted);
    font-size: 13px;
}

.login-divider::before,
.login-divider::after {
    content: "";
    flex: 1;
    height: 1px;
    background: rgba(255, 255, 255, 0.1);
}

.login-form { display: flex; flex-direction: column; text-align: left; gap: 4px; }
.login-form.hidden { display: none; }
.login-form button { width: 100%; margin-top: 10px; }
.message { min-height: 22px; margin-top: 18px; font-size: 14px; }
.footer-text { margin-top: 28px; color: var(--ud-text-muted); font-size: 13px; }

.form-note {
    margin: 2px 0 0;
    font-size: 13px;
    line-height: 1.6;
    color: var(--ud-text-soft);
}

@media (max-width: 640px) {
    .login-page {
        min-height: 100dvh;
        align-items: start;
        padding: 18px;
        padding-top: max(18px, env(safe-area-inset-top));
        padding-bottom: max(18px, env(safe-area-inset-bottom));
    }

    .login-card {
        padding: 32px 22px;
    }

    .login-preferences {
        margin-bottom: 20px;
        padding: 14px;
        gap: 12px;
    }

    .login-preferences-controls {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .social-btn.provider-google::before {
        box-shadow: 11px 0 0 #fbbc05, 22px 0 0 #34a853, 33px 0 0 #4285f4;
    }

    .social-btn.provider-microsoft::before {
        box-shadow:
            11px 0 0 #7fba00,
            0 11px 0 #00a4ef,
            11px 11px 0 #ffb900;
    }
}