.signature-surface {
    display: block;
    width: 100%;
    height: 220px;
    background: #ffffff;
    border: 2px dashed #9caaa6;
    border-radius: 12px;
    touch-action: none;
}

.mobile-bottom-nav {
    position: fixed;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 1300;
    padding: 8px 10px;
    padding-bottom: calc(8px + env(safe-area-inset-bottom));
    border-top: 1px solid var(--mud-palette-divider);
}

.login-label {
    display: block;
    margin-bottom: 6px;
    font-size: 14px;
    font-weight: 600;
}

.login-input-wrapper {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 14px;
    border: 1px solid #cbd5d1;
    border-radius: 10px;
    background: #ffffff;
}

    .login-input-wrapper input {
        width: 100%;
        border: 0;
        outline: 0;
        font-size: 16px;
        background: transparent;
    }

.remember-row {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 18px;
}

.login-submit {
    width: 100%;
    padding: 13px 16px;
    border: 0;
    border-radius: 10px;
    color: #ffffff;
    background: #006c5b;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
}

.mobile-create-button {
    min-width: 48px;
    width: 48px;
    height: 48px;
    padding: 0;
    border-radius: 50%;
}


/* Overlay toàn màn hình luôn thấp hơn lớp thông báo hệ thống. */
.force-password-overlay {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(15, 23, 42, 0.72);
    z-index: 200000;
}

.force-password-dialog {
    position: relative;
    z-index: 200001;
    width: min(360px, calc(100vw - 32px));
    max-height: calc(100vh - 32px);
    overflow-y: auto;
}

/*
 * Snackbar là lớp cao nhất của ứng dụng.
 * Áp dụng cho mọi page, dialog, drawer và overlay bắt buộc đổi mật khẩu.
 */
html body .mud-snackbar-provider {
    position: fixed !important;
    top: max(8px, env(safe-area-inset-top)) !important;
    right: 8px !important;
    bottom: auto !important;
    left: 8px !important;
    z-index: 2147483647 !important;
    align-items: center !important;
    pointer-events: none !important;
}

html body .mud-snackbar-provider .mud-snackbar {
    position: relative !important;
    z-index: 2147483647 !important;
    pointer-events: auto !important;
}

.saved-signature {
    display: flex;
    min-height: 220px;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 12px;
    border: 1px solid var(--mud-palette-divider);
    border-radius: 12px;
    background: var(--mud-palette-surface);
}

.saved-signature-image {
    display: block;
    width: min(100%, 420px);
    height: 120px;
    object-fit: contain;
    border: 1px solid var(--mud-palette-divider, #e0e0e0);
    border-radius: 8px;
    background: #ffffff;
}